1. A method for preventing natural disasters in small watersheds based on emergency plan visualization and rapid drawing is characterized by comprising the following steps:

acquiring geographic information, meteorological information, social information and past prevention and control recording information of a small watershed;

secondly, rapidly drawing by utilizing geographic information and meteorological information to form a 3D simulation map;

thirdly, optimizing the formed 3D simulation map by using the past prevention and treatment record information, and presuming the possibility of natural disasters and the occurrence time, area and category to provide a preliminary emergency plan;

and step four, adjusting and optimizing the preliminary emergency plan according to social information to form a final emergency plan.

2. The method for preventing the natural disasters in the small watershed based on the visualization of the emergency plan and the rapid mapping of the claim 1, wherein the first step comprises the following steps:

acquiring the geographic information by one or more technologies of a GPS, a GIS and a remote sensing RS, wherein the geographic information comprises geology, terrain, water area and roads;

acquiring meteorological information at a small watershed from a meteorological station, wherein the meteorological information comprises past meteorological records, current meteorological data and predicted meteorological data;

and obtaining social information from communities in the small watershed, wherein the social information comprises population distribution conditions, industrial and agricultural distribution conditions and categories.

3. The method for preventing the natural disasters in the small watershed based on the visualization of the emergency plan and the rapid mapping according to claim 1, wherein the second step comprises the following steps:

constructing a 3D map frame according to the acquired geographic information;

intelligently identifying and labeling the details of each region at the 3D map frame;

performing manual intervention optimization on the areas which cannot be intelligently identified or labeled to fill the labels;

rendering the environment of the 3D map frame by using the acquired meteorological information to form a 3D simulation map;

the 3D simulation map can rotate 360 degrees and can show any section structure.

4. The method for preventing the natural disasters in the small watershed based on the visualization of the emergency plan and the rapid mapping according to claim 1, wherein the third step comprises the following steps:

identifying the 3D simulation map according to the acquired past prevention and treatment record information so as to highlight a prevention and treatment area;

classifying and summarizing various natural disasters in the past prevention and treatment record information according to the categories and the grades of the natural disasters, and extracting the characteristics of the various natural disasters;

performing fitting analysis on the extracted features to obtain the generation rules of various natural disasters;

and predicting the area, time and category of the disaster which is probably happened at first in the future period according to the obtained generation rule, and providing a preliminary emergency plan.

5. The method for preventing the natural disasters in the small watershed based on the visualization of the emergency plan and the rapid mapping according to claim 4, wherein the third step further comprises:

updating past prevention and control record information in time, and performing feature extraction and fitting analysis according to the updated past prevention and control record information to obtain the updated generation rules of various natural disasters;

and optimizing the time and the category of the disaster possibly occurring at the first in the predicted future period and the preliminary emergency plan according to the updated generation rule.

6. The method for preventing the natural disasters in the small watershed based on the visualization of the emergency plan and the rapid mapping according to claim 2, wherein the fourth step comprises the following steps:

planning personnel refuge routes and refuge concentration points according to population distribution conditions, road and industrial and agricultural distribution conditions and categories;

deducing a post-disaster situation according to a preliminary emergency plan, and setting reconstruction work content according to the post-disaster situation;

and summarizing and sorting the personnel refuge routes and refuge concentration points, the reconstruction work content and the preliminary emergency plan to form a final emergency plan.

7. The method for preventing the natural disasters in the small watershed based on the visualization of the emergency plan and the rapid mapping of the claim 1, wherein the method for preventing the natural disasters in the small watershed further comprises the following steps:

step five, configuring a GPS terminal by personnel in a small watershed, wherein the GPS terminal records basic information of holding personnel, and the basic information comprises names, ages, professions, addresses and contact ways of the holding personnel;

step six, the final emergency plan is sent to all the GPS terminals;

and seventhly, converting the final emergency plan by the GPS terminal according to the current position coordinate and the basic information to form an exclusive emergency plan corresponding to the holding personnel.

8. The small watershed natural disaster prevention system based on emergency plan visualization and rapid drawing is used for realizing the small watershed natural disaster prevention method based on emergency plan visualization and rapid drawing as claimed in any one of claims 1-7, and is characterized by comprising a prevention center and a plurality of GPS terminals in wireless communication connection with the prevention center; the prevention center is used for acquiring geographic information, meteorological information, social information and past prevention and treatment record information of the small watershed, rapidly drawing by utilizing the geographic information, the meteorological information, the social information and the past prevention and treatment record information to form a 3D simulation map, and proposing a preliminary emergency plan to form a final emergency plan; and the GPS terminal is used for acquiring the final emergency plan and converting the final emergency plan according to the current position coordinate and the basic information so as to form an exclusive emergency plan corresponding to a holding person.

9. The small watershed natural disaster prevention system based on emergency plan visualization and rapid cartography according to claim 8, wherein the prevention center comprises a data acquisition module, a rapid cartography module, a plan generation module and a status visualization module; the data acquisition module is used for acquiring geographic information, meteorological information, social information and past prevention and control recording information of the small watershed; the rapid drawing module is used for rapidly drawing by utilizing geographic information and meteorological information to form a 3D simulation map; the plan generating module is used for optimizing the formed 3D simulation map by using the past prevention and treatment record information, estimating the type and the possibility of natural disasters to provide a preliminary emergency plan, and adjusting and optimizing the preliminary emergency plan according to social information to form a final emergency plan; and the state visualization module is used for displaying the final emergency plan in a visualization mode.

10. The natural disaster system for preventing small watershed based on emergency plan visualization and rapid mapping according to claim 8, wherein the GPS terminal comprises a plan acquisition module, a plan conversion module and a plan display module; the plan acquisition module is used for acquiring a final emergency plan; the plan conversion module is used for converting the final emergency plan according to the current position coordinate and the basic information so as to form an exclusive emergency plan corresponding to a holding person; the plan display module is used for displaying the exclusive emergency plan for the desired personnel.

Background

China has broad width and complex terrain, so the method becomes one of the most serious countries of the world with geological disasters, wherein disasters such as collapse, landslide, debris flow, ground collapse, ground cracks, ground settlement and the like seriously threaten the life and property safety of people and restrict the sustainable development of social economy.

The small watershed usually means that the water collection area is 50km below two and three branches by taking the section of a watershed and the outlet section of a downstream river channel as a boundary²The following relatively independent and enclosed natural catchment areas. The natural disasters of the small watershed mainly comprise water loss and soil erosion. The water and soil loss refers to the phenomenon that due to the influence of natural or artificial factors, rainwater cannot be locally absorbed, flows down along the same trend and scours the soil, so that water and the soil are simultaneously lost. The main reasons are large ground gradient, improper land utilization, damaged ground vegetation, unreasonable cultivation technology, loose soil texture, excessive forest cutting, excessive grazing and the like. The harm of soil erosion is mainly shown in the following steps: the soil plough layer is eroded and destroyed, so that the soil fertility is gradually depleted; silting rivers, channels and reservoirs, reducing the benefit of hydraulic engineering, even causing flood and drought disasters and seriously affecting industrial and agricultural production; soil erosion and water loss bring serious threats to agricultural production in mountainous areas and downstream riverways.

Although the construction of emergency platforms is listed in national science and technology development plans in China, a large number of coping and processing methods and ways related to geological disaster emergency response are generated, the prevention and treatment of natural disasters in small watershed still remain on the old 'soil method' (first discovery and later treatment), and the prevention and the improvement of small watershed environment are not facilitated.

Disclosure of Invention

The invention aims to provide a method and a system for preventing small watershed natural disasters based on emergency plan visualization and rapid drawing, so as to solve the problem of how to prevent the small watershed natural disasters.

In order to solve the technical problems, the invention provides a method for preventing natural disasters of small watersheds based on emergency plan visualization and rapid drawing, which comprises the following steps:

acquiring geographic information, meteorological information, social information and past prevention and control recording information of a small watershed;

secondly, rapidly drawing by utilizing geographic information and meteorological information to form a 3D simulation map;

thirdly, optimizing the formed 3D simulation map by using the past prevention and treatment record information, and presuming the possibility of natural disasters and the occurrence time, area and category to provide a preliminary emergency plan;

and step four, adjusting and optimizing the preliminary emergency plan according to social information to form a final emergency plan.

Optionally, in the method for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping, the first step includes:

acquiring the geographic information by one or more technologies of a GPS, a GIS and a remote sensing RS, wherein the geographic information comprises geology, terrain, water area and roads;

acquiring meteorological information at a small watershed from a meteorological station, wherein the meteorological information comprises past meteorological records, current meteorological data and predicted meteorological data;

and obtaining social information from communities in the small watershed, wherein the social information comprises population distribution conditions, industrial and agricultural distribution conditions and categories.

Optionally, in the method for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping, the second step includes:

constructing a 3D map frame according to the acquired geographic information;

intelligently identifying and labeling the details of each region at the 3D map frame;

performing manual intervention optimization on the areas which cannot be intelligently identified or labeled to fill the labels;

rendering the environment of the 3D map frame by using the acquired meteorological information to form a 3D simulation map;

the 3D simulation map can rotate 360 degrees and can show any section structure.

Optionally, in the method for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping, the third step includes:

identifying the 3D simulation map according to the acquired past prevention and treatment record information so as to highlight a prevention and treatment area;

classifying and summarizing various natural disasters in the past prevention and treatment record information according to the categories and the grades of the natural disasters, and extracting the characteristics of the various natural disasters;

performing fitting analysis on the extracted features to obtain the generation rules of various natural disasters;

and predicting the area, time and category of the disaster which is probably happened at first in the future period according to the obtained generation rule, and providing a preliminary emergency plan.

Optionally, in the method for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping, the third step further includes:

updating past prevention and control record information in time, and performing feature extraction and fitting analysis according to the updated past prevention and control record information to obtain the updated generation rules of various natural disasters;

and optimizing the time and the category of the disaster possibly occurring at the first in the predicted future period and the preliminary emergency plan according to the updated generation rule.

Optionally, in the method for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping, the fourth step includes:

planning personnel refuge routes and refuge concentration points according to population distribution conditions, road and industrial and agricultural distribution conditions and categories;

deducing a post-disaster situation according to a preliminary emergency plan, and setting reconstruction work content according to the post-disaster situation;

and summarizing and sorting the personnel refuge routes and refuge concentration points, the reconstruction work content and the preliminary emergency plan to form a final emergency plan.

Optionally, in the method for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping, the method for preventing natural disasters in a small watershed further includes:

step five, configuring a GPS terminal by personnel in a small watershed, wherein the GPS terminal records basic information of holding personnel, and the basic information comprises names, ages, professions, addresses and contact ways of the holding personnel;

step six, the final emergency plan is sent to all the GPS terminals;

and seventhly, converting the final emergency plan by the GPS terminal according to the current position coordinate and the basic information to form an exclusive emergency plan corresponding to the holding personnel.

In order to solve the technical problems, the invention also provides a small watershed natural disaster prevention system based on emergency plan visualization and rapid mapping, which is used for realizing the small watershed natural disaster prevention method based on emergency plan visualization and rapid mapping, and the small watershed natural disaster prevention system comprises a prevention center and a plurality of GPS terminals in wireless communication connection with the prevention center; the prevention center is used for acquiring geographic information, meteorological information, social information and past prevention and treatment record information of the small watershed, rapidly drawing by utilizing the geographic information, the meteorological information, the social information and the past prevention and treatment record information to form a 3D simulation map, and proposing a preliminary emergency plan to form a final emergency plan; and the GPS terminal is used for acquiring the final emergency plan and converting the final emergency plan according to the current position coordinate and the basic information so as to form an exclusive emergency plan corresponding to a holding person.

Optionally, in the system for preventing natural disasters in small watersheds based on emergency plan visualization and rapid mapping, the prevention center includes a data acquisition module, a rapid mapping module, a plan generation module, and a state visualization module; the data acquisition module is used for acquiring geographic information, meteorological information, social information and past prevention and control recording information of the small watershed; the rapid drawing module is used for rapidly drawing by utilizing geographic information and meteorological information to form a 3D simulation map; the plan generating module is used for optimizing the formed 3D simulation map by using the past prevention and treatment record information, estimating the type and the possibility of natural disasters to provide a preliminary emergency plan, and adjusting and optimizing the preliminary emergency plan according to social information to form a final emergency plan; and the state visualization module is used for displaying the final emergency plan in a visualization mode.

Optionally, in the system for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping, the GPS terminal includes a plan acquisition module, a plan conversion module, and a plan display module; the plan acquisition module is used for acquiring a final emergency plan; the plan conversion module is used for converting the final emergency plan according to the current position coordinate and the basic information so as to form an exclusive emergency plan corresponding to a holding person; the plan display module is used for displaying the exclusive emergency plan for the desired personnel.

The invention provides a method and a system for preventing natural disasters in small watersheds based on emergency plan visualization and rapid drawing, which comprises the following steps: acquiring geographic information, meteorological information, social information and past prevention and control recording information of a small watershed; rapidly drawing a map by utilizing geographic information and meteorological information to form a 3D simulation map; optimizing the formed 3D simulation map by using the past prevention and treatment record information, and presuming the type and possibility of natural disaster occurrence to provide a preliminary emergency plan; and adjusting and optimizing the preliminary emergency plan according to social information to form a final emergency plan. The 3D simulation map is constructed and optimized through various information of the small watershed, so that the possibility of natural disasters in the small watershed area and the area, type and time of the disasters can be automatically calculated, and the prevention efficiency of the natural disasters in the small watershed is improved; in addition, the 3D simulation map can visually display the deduction process, so that people can visually and clearly observe the regional layout possibly generating natural disasters, hazards generated by the disasters and the like, and the 3D simulation map has reference and auxiliary effects on the prevention of the natural disasters. The problem of how to prevent natural disasters in small watersheds is solved.

Drawings

Fig. 1 is a flow chart of a method for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping according to this embodiment;

fig. 2 is a flow chart of the method for preventing natural disasters in a small watershed, which is provided by the embodiment and based on emergency plan visualization and rapid mapping, after optimization;

fig. 3 is a schematic structural diagram of the system for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping provided by this embodiment.

Detailed Description

The method and system for preventing natural disasters in small watersheds based on emergency plan visualization and rapid mapping, which are provided by the invention, are further described in detail below with reference to the accompanying drawings and specific embodiments. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. Further, the structures illustrated in the drawings are often part of actual structures. In particular, the drawings may have different emphasis points and may sometimes be scaled differently.

It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the accompanying drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The embodiment provides a method for preventing natural disasters in a small watershed based on emergency plan visualization and rapid mapping, and as shown in fig. 1, the method for preventing natural disasters in the small watershed comprises the following steps:

acquiring geographic information, meteorological information, social information and past prevention and control recording information of a small watershed;

secondly, rapidly drawing by utilizing geographic information and meteorological information to form a 3D simulation map;

thirdly, optimizing the formed 3D simulation map by using the past prevention and treatment record information, and presuming the possibility of natural disasters and the occurrence time, area and category to provide a preliminary emergency plan;

and step four, adjusting and optimizing the preliminary emergency plan according to social information to form a final emergency plan.

According to the method for preventing the small watershed natural disasters based on the emergency plan visualization and the rapid drawing, the 3D simulation map is constructed and optimized through various information of the small watershed, so that the possibility of the small watershed natural disasters and the disaster occurring area, type and time can be automatically calculated, and the prevention efficiency of the small watershed natural disasters is improved; in addition, the 3D simulation map can visually display the deduction process, so that people can visually and clearly observe the regional layout possibly generating natural disasters, hazards generated by the disasters and the like, and the 3D simulation map has reference and auxiliary effects on the prevention of the natural disasters. The problem of how to prevent natural disasters in small watersheds is solved.

Specifically, in this embodiment, the first step includes:

and S11, acquiring the geographic information by one or more technologies of GPS, GIS and remote sensing RS, wherein the geographic information comprises but is not limited to geology, terrain, water area and road. By the acquired geological information, terrain, water areas, roads and the like, the real situation of the small watershed area can be completely displayed according to a preset proportion when the 3D simulation map is formed, so that the acquired information is about detailed and comprehensive, and the later-stage 3D simulation map is more favorable to be formed. The GPS, GIS, and remote sensing RS technologies are well known to those skilled in the art for obtaining geographic information, and the specific implementation is not described herein again.

And S12, acquiring weather information at the small watershed from the weather station, wherein the weather information comprises, but is not limited to, past weather records, current weather data and forecast weather data. The meteorological law of the small watershed can be known through the meteorological information, and the possibility of natural disasters is considered to be influenced by meteorological factors, so that the possibility of natural disasters is considered and inferred more comprehensively, the accuracy of natural disaster prevention is improved, the meteorological information is included in the embodiment, and the possibility, time, area and category of natural disasters are deduced and confirmed through the meteorological information and the geographic information.

S13, obtaining social information from communities in small watersheds, wherein the social information comprises but is not limited to population distribution, industrial and agricultural distribution and categories. Because the community can timely know the conditions of all people in the community management range, the accuracy and the integrity of the social information can be ensured by acquiring the social information through the community. Of course, if necessary, the social information may be obtained through other routes, such as the department of industry and commerce, the department of public security, and other registration departments.

It should be noted that the various types of information may be obtained in real time, or a preset period may be set, and each period is obtained once. For example, it is possible to set up to acquire updates once a year, considering that geographic information may not change significantly for a long time, which may also reduce the workload of data acquisition; considering that the weather changes every day and the weather station monitors the weather in real time, the data can be networked with the weather station so as to acquire the latest data of the weather in real time; in consideration of the fact that population distribution and industrial and agricultural distribution do not change greatly in a short period of time, data can be updated on a daily or weekly or monthly medium-level basis in order to ensure that all persons can be notified and contacted in time when a natural disaster occurs.

It should be noted that the logic of the obtaining order of the geographic information, the meteorological information and the social information is not strictly required, and in the practical application process, the obtaining order may be in other orders or obtained simultaneously, which is not limited herein.

Further, in this embodiment, the second step includes:

s21, constructing a 3D map frame according to the acquired geographic information. In this embodiment, the 3D map frame may be specifically set up by using technologies such as a hologram or a virtual reality, so that people can intuitively observe the 3D simulation map. Of course, in other embodiments, the setting up of the 3D map frame may also be achieved by other technical means.

And S22, intelligently identifying and labeling the details of each region at the 3D map frame. The identified and labeled key points comprise geographic region characteristics, such as roads, mountains, water areas, buildings and the like; and the device also comprises contour lines, equipotential lines and other auxiliary lines. The labeling can be realized by specific lines (colors, linear types), symbols, and/or words. When the 3D simulation map is displayed, the marks can be displayed or not displayed selectively, so that people can observe the appearance of the small watershed on the 3D simulation map conveniently.

And S23, performing manual intervention optimization on the areas which cannot be intelligently identified or labeled to fill the labels. In consideration of the possibility of misjudgment of intelligent identification, unfilled areas can be manually marked in a manual intervention mode, filled marks can be approved and confirmed, errors of emergency plans caused by identification errors are prevented, and the realizability and operability of the emergency plans are improved.

And S24, rendering the environment of the 3D map frame by using the acquired meteorological information to form a 3D simulation map. In this embodiment, the acquired weather information may be restored, so as to render the weather on the 3D map frame, and the 3D simulation map formed in this way may not only show the geographical structure, but also show the weather at the current or past or future time, and the change of the geological structure under the weather.

Preferably, in this embodiment, the 3D simulation map can be rotated by 360 ° and can show any cross-sectional structure. Therefore, people can conveniently analyze and discover the deeper and more internal reasons generated by the natural disaster and the change of the natural disaster to the geological interior, and technical support is provided for post-disaster reconstruction.

Still further, in this embodiment, the third step includes:

and S31, identifying the 3D simulation map according to the acquired past prevention and treatment record information so as to highlight prevention and treatment areas. In consideration of the possibility of natural disaster retransmission and the monitoring of the post-disaster reconstruction effect, in this embodiment, the area in which the control record was previously recorded is identified, and the control area is highlighted. When the prevention and control area needs to be further analyzed and confirmed, the related map information and the recorded other information can be directly called, and the data processing efficiency is improved.

S32, classifying and summarizing the natural disasters in the past prevention and treatment record information according to the categories and the grades of the natural disasters, and extracting the characteristics of the natural disasters;

s33, performing fitting analysis on the extracted features to obtain the generation rules of various natural disasters;

s34, according to the obtained generation rule, pre-judging the area, time and category of the disaster which is probably happened in the future period first, and proposing a preliminary emergency plan.

The method has the advantages that various natural disasters in the small watershed are subjected to feature extraction, classified and sorted, laws in the natural disasters are found out, and the method has very important contribution to preventing the natural disasters, so that the possibility of occurrence of the natural disasters and the areas, time and categories of the natural disasters can be estimated and estimated, and therefore preventive measures and post-disaster reconstruction schemes are made in a targeted manner, and the emergency situation can be responded to by people and leisurely.

Preferably, in this embodiment, the third step further includes:

s35, updating the past prevention and treatment record information in time, and performing feature extraction and fitting analysis according to the updated past prevention and treatment record information to obtain the updated generation rules of various natural disasters;

and S36, optimizing the time and the category of the disaster which is possibly happened in the first future and the preliminary emergency plan according to the updated generation rule.

Because the crustal geological motion is regularly and circularly seen for a long time, and the exploration technology and the emergency plan measures are more humanized and idealistic along with the development of the scientific technology, the past prevention and treatment record information is updated in time, and the effectiveness and the feasibility of the emergency plan are favorably improved.

Furthermore, in this embodiment, the fourth step includes:

and S41, planning personnel refuge routes and refuge concentration points according to population distribution conditions, road and industrial and agricultural distribution conditions and categories. Specifically, a plurality of refuge concentration points can be preset on the 3D simulation map, the number of the accommodated population is set, people are evacuated according to the area where the natural disaster is likely to occur, and the refuge route is optimized according to the shortest route, so that all people in the area where the natural disaster occurs can be evacuated as soon as possible to enter the refuge concentration points, and further, the safety of the people is ensured.

And S42, deducing the post-disaster situation according to the preliminary emergency plan, and setting the reconstruction work content according to the post-disaster situation. Geological changes caused by different natural disasters are different, so that the generated post-disaster situations are also different, and post-disaster reconstruction work content needs to be set in a targeted manner. In the embodiment, the post-disaster situation is deduced, and the post-disaster reconstruction work is arranged according to the deduced result, so that after the natural disaster really occurs, the post-disaster reconstruction work content in the emergency plan can be directly applied, and the responsiveness of the emergency situation is improved.

S43, summarizing and settling the personnel refuge routes and refuge concentration points, the reconstruction work content and the preliminary emergency plan to form a final emergency plan.

Preferably, in order to actively participate in the emergency plan and make a contribution to the emergency plan, in this embodiment, as shown in fig. 2, the method for preventing natural disasters in a small watershed further includes:

step five, configuring a GPS terminal by personnel at a small watershed, wherein the GPS terminal records basic information of holding personnel, and the basic information comprises but is not limited to name, age, occupation, address and contact way of the holding personnel;

step six, the final emergency plan is sent to all the GPS terminals;

and seventhly, converting the final emergency plan by the GPS terminal according to the current position coordinate and the basic information to form an exclusive emergency plan corresponding to the holding personnel.

Be connected through GPS terminal and emergent plan prevention center, realize that data passes each other, can make the GPS terminal hold personnel in time acquire emergent plan, and then make safeguard measure, in addition, the prevention center can acquire the geographical position of holding personnel through the GPS terminal in real time, monitors and then guarantees personnel's safety to personnel.

Preferably, if other information such as occupation of a person is recorded in the GPS terminal, a specific professional group can be mobilized in an emergency plan, and the implementation of the emergency plan is matched. For example, if the holding person is a medical care person, the holding person can be instructed to go to a medical station to perform medical assistance on the holding person; for another example, if the holding personnel is a fire officer or a armed police officer, the holding personnel can be directed to go to disaster relief and resistance, and strive for more refuge time for people.

The exclusive emergency plan is to guide the holding personnel to go to the designated refuge concentration point by using the current position of the GPS terminal according to the refuge route generated by the final emergency plan, so as to avoid the emergency response careless omission caused by the condition that the personnel is unfamiliar with the road, or the road is damaged in the case of disaster, or the personnel in the individual refuge concentration point are too much concentrated and can not accommodate the personnel, and ensure the safety of the personnel.

Certainly, in other embodiments, the GPS terminal may be interconnected with a prevention center, and a prevention center controller may confirm the status of a person held by the GPS terminal through a remote video call and direct the person to leave, thereby improving the response timeliness of an emergency plan. For example, after an emergency plan is issued, if a preventive center monitoring person finds that the position coordinates of a specific GPS terminal do not move for a long time, the preventive center monitoring person makes a video call with the GPS terminal to confirm whether a person exists near the GPS terminal, if so, the preventive center monitoring person prompts the person to evacuate, and if not, the preventive center monitoring person can set the GPS terminal as a failed terminal; for another example, under normal conditions, the working conditions of all GPS terminals may be confirmed irregularly or periodically, and if the GPS terminal has failed, the position information of the GPS terminal is removed, and the position information of the GPS terminal newly entering the small flow area is added. The GPS terminal can be mobile equipment with a GPS function, such as a mobile phone, an intelligent watch and the like, and can have other functions such as voice call, video call and the like besides providing the GPS positioning function so as to ensure the safe evacuation of personnel in an emergency state.

The embodiment also provides a small watershed natural disaster prevention system based on emergency plan visualization and rapid mapping, as shown in fig. 3, the small watershed natural disaster prevention system includes a prevention center and a plurality of GPS terminals in wireless communication connection with the prevention center; the prevention center is used for acquiring geographic information, meteorological information, social information and past prevention and treatment record information of the small watershed, rapidly drawing by utilizing the geographic information, the meteorological information, the social information and the past prevention and treatment record information to form a 3D simulation map, and proposing a preliminary emergency plan to form a final emergency plan; and the GPS terminal is used for acquiring the final emergency plan and converting the final emergency plan according to the current position coordinate and the basic information so as to form an exclusive emergency plan corresponding to a holding person.

Specifically, in this embodiment, the prevention center includes a data acquisition module, a rapid mapping module, a plan generation module, and a status visualization module; the data acquisition module is used for acquiring geographic information, meteorological information, social information and past prevention and control recording information of the small watershed; the rapid drawing module is used for rapidly drawing by utilizing geographic information and meteorological information to form a 3D simulation map; the plan generating module is used for optimizing the formed 3D simulation map by using the past prevention and treatment record information, estimating the type and the possibility of natural disasters to provide a preliminary emergency plan, and adjusting and optimizing the preliminary emergency plan according to social information to form a final emergency plan; and the state visualization module is used for displaying the final emergency plan in a visualization mode.

In this embodiment, the GPS terminal includes a plan acquisition module, a plan conversion module, and a plan display module; the plan acquisition module is used for acquiring a final emergency plan; the plan conversion module is used for converting the final emergency plan according to the current position coordinate and the basic information so as to form an exclusive emergency plan corresponding to a holding person; the plan display module is used for displaying the exclusive emergency plan for the desired personnel.

In the small watershed natural disaster prevention system based on emergency plan visualization and rapid drawing provided by the embodiment, a prevention center can truly, clearly and accurately reflect the geological appearance of a small watershed through a 3D simulation map, can regularly update various geographic identifications, such as roads, buildings, geological forms and the like, of the small watershed, can automatically and intelligently judge the time, the area, the category and the like of natural disasters possibly occurring in the future period according to various acquired information, and further generates emergency plans according to the judgment result, so that the number of people is in the center before the natural disasters occur; the GPS terminal is interconnected with the prevention center, so that data intercommunication between people and the prevention center is realized, the personnel are effectively commanded to take refuge according to a plan mode after an emergency plan is issued, and the safety of the personnel is improved. In addition, according to the final emergency plan, the post-disaster reconstruction work can be effectively carried out, and important support is provided for natural disaster prevention, treatment and post-disaster reconstruction of small watersheds.

In summary, the method and system for preventing natural disasters in small watersheds based on emergency plan visualization and rapid mapping provided by the embodiment include: acquiring geographic information, meteorological information, social information and past prevention and control recording information of a small watershed; rapidly drawing a map by utilizing geographic information and meteorological information to form a 3D simulation map; optimizing the formed 3D simulation map by using the past prevention and treatment record information, and presuming the type and possibility of natural disaster occurrence to provide a preliminary emergency plan; and adjusting and optimizing the preliminary emergency plan according to social information to form a final emergency plan. The 3D simulation map is constructed and optimized through various information of the small watershed, so that the possibility of natural disasters in the small watershed area and the area, type and time of the disasters can be automatically calculated, and the prevention efficiency of the natural disasters in the small watershed is improved; in addition, the 3D simulation map can visually display the deduction process, so that people can visually and clearly observe the regional layout possibly generating natural disasters, hazards generated by the disasters and the like, and the 3D simulation map has reference and auxiliary effects on the prevention of the natural disasters. The problem of how to prevent natural disasters in small watersheds is solved.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.