1. A method for correcting deviation in the middle of a jacking pipe is characterized in that: the correction method comprises a pipe breaking step and a correction step;

the pipe breaking step is to break one or more sections of the pipe jacking pipe drilled into the soil layer or the rock stratum in a manual and/or mechanical mode;

the deviation rectifying step is to use a manual and/or mechanical mode to connect a plurality of small supporting rings and a plurality of small adjusting rings, and a plurality of small supporting rings are used for forming an annular supporting ring at the crushing position of the jacking pipe, a plurality of small adjusting rings are spliced to form an annular adjusting ring, one end of the supporting ring is sleeved on the adjusting ring and used for replacing one or more broken top pipes, wherein the non-connecting end of the supporting ring is sleeved on the sinking socket of the unbroken top pipe, the non-connecting end sleeve of the adjusting ring is inserted into the sinking socket of the unbroken top pipe, at least one hydraulic component is arranged on the inner wall of the supporting ring, the other end of the hydraulic component is connected with the adjusting ring, the adjusting ring deflects relative to the support ring under the pushing of the hydraulic component to form a middle-section deviation rectifying component arranged in a pipe section drilled into a soil layer or a rock layer top, and the adjusting ring of the middle-section deviation rectifying component deflects relative to the support ring under the pushing of the hydraulic component;

through the steps, the rectification of the whole jacking pipe is realized in the middle of the top pipe section which is drilled into the soil layer or the rock layer locally or in the middle of the jacking pipe.

2. The method for correcting the deviation of the middle of the jacking pipe as claimed in claim 1, wherein the method comprises the following steps: the deviation rectifying method also comprises a deviation rectifying point setting step;

and in the deviation correcting point setting step, the actual pipe-jacking drilling route map is obviously deformed upwards or downwards compared with the pipe-jacking drilling design route map, the initial position or the adjacent position of the obvious deformation is set as a deviation correcting point, and in the pipe breaking step, one or more sections of pipe jacking at the deviation correcting point are subjected to pipe breaking.

3. The method for correcting the deviation of the middle of the jacking pipe as claimed in claim 1, wherein the method comprises the following steps: in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, when the drilling direction of the tool pipe meets the design requirement or reaches the deviation rectifying condition of the tool pipe, the middle deviation rectifying part stops working and is disassembled into a plurality of small support rings and a plurality of small adjusting rings, then the jacking pipe is pushed to enable the blank position where the middle deviation rectifying part is originally arranged to be covered by the rear jacking pipe, or the middle deviation rectifying part stops working and pushes the jacking pipe to enable the middle deviation rectifying part to move along with the jacking pipe.

4. The method for correcting the deviation of the middle of the jacking pipe as claimed in claim 1, wherein the method comprises the following steps: in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, the tool pipe deflects simultaneously, when the drilling direction of the tool pipe meets the design requirement or reaches the deviation rectifying condition of the tool pipe, the middle deviation rectifying part stops working, the middle deviation rectifying part is disassembled into a plurality of small supporting rings and a plurality of small adjusting rings, the jacking pipe is pushed again to enable the blank position where the middle deviation rectifying part is originally arranged to be covered by the rear jacking pipe, or the middle deviation rectifying part stops working and pushes the jacking pipe to enable the middle deviation rectifying part to move along with the jacking pipe.

5. The method for correcting the deviation of the middle of the jacking pipe as claimed in claim 1, wherein the method comprises the following steps: in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, then the middle deviation rectifying part pauses, the tool pipe pauses after the tool pipe is started to deflect, when the drilling direction of the tool pipe does not meet the design requirement or does not reach the self deviation rectifying condition, the steps are repeated to realize accumulative deviation rectifying, and when the drilling direction of the tool pipe meets the design requirement or reaches the self deviation rectifying condition.

6. The method for correcting the deviation of the middle of the jacking pipe as claimed in claim 1, wherein the method comprises the following steps: in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, and meanwhile, the tool pipe is started to deflect, when the drilling direction of the tool pipe does not meet the design requirement or does not reach the self deviation rectifying condition, the steps are repeated to realize accumulative deviation rectifying, so that the drilling direction of the tool pipe meets the design requirement or reaches the self deviation rectifying condition.

7. The method for correcting the deviation of the middle of the jacking pipe as claimed in claim 1, wherein the method comprises the following steps: in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, then the middle deviation rectifying part pauses and starts the tool pipe to deflect, and when the drilling direction of the tool pipe does not meet the design requirement or cannot reach the self deviation rectifying condition, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, and the deviation rectifying is realized by cooperating with the deflection of the tool pipe.

8. The method for correcting the deviation of the middle of the jacking pipe as claimed in claim 1, wherein the method comprises the following steps: in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, the tool pipe is started to deflect simultaneously, when the drilling direction of the tool pipe does not meet the design requirement or cannot reach the self deviation rectifying condition, the deflection of the tool pipe is stopped, then the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, then the middle deviation rectifying part stops, and the tool pipe is started to deflect again.

9. The method for correcting the deviation of the middle of the jacking pipe according to any one of claims 1 to 8, wherein: in the pipe breaking step, a plurality of nonadjacent points on a jacking pipe which is drilled into a soil layer or a rock stratum are broken in a manual and/or mechanical mode;

in the deviation rectifying step, a plurality of middle section deviation rectifying components are arranged on a plurality of non-adjacent broken pipes, and the deviation rectification of the middle section of the jacking pipe is realized through the cooperation of the middle section deviation rectifying components.

Background

The Hangzhou natural gas utilizes project sun-enriched branch project natural gas reconstruction projects, the total length of a line is 10.2 kilometers, the terrain along the line is complex, non-excavation horizontal directional drilling and mountain section continuous pipe jacking construction are adopted, the construction process and the construction technology in long-distance pipeline projects are the most complex, and a powerful project management team is required to cooperate and manage meticulously. The top pipe section is the longest section of the engineering in working period, has the total length of 2.8 kilometers, and consists of 11 sections of top pipe sections and 12 operating wells. The deviation of the jacking line can occur under the influence of geological conditions or jacking operators during the advancing process of the tool pipe (drill bit). When the offset is small and smaller than the design value of the deviation correcting system in the tool pipe, the numerical control system on the operating platform can control the circumferential expansion and contraction amount of the deviation correcting system to four hydraulic oil cylinders to adjust the jacking line in a small angle. And requires severe control of the deflection angle to be less than the tool tube adjustable deflection, which would otherwise invalidate the project.

The pipe jacking pipe passes through the eastern mountain of the octagonal road (7 # foundation pit-8 # foundation pit jacking process, because the maximum deviation angle reaches 5.4 degrees, is 1.8 degrees larger than the maximum deviation angle of the tool pipe, exceeds the allowable deviation value of the design by 4.2 degrees, only the pipeline is abandoned according to the previous construction experience or the design is required to be adjusted by a design institute according to the drilled practical situation, the change of the design is not possible under the influence of the construction site environment, and in order to avoid the abandoned drilled pipeline, the deviation of the tool pipe is corrected by the middle of the pipeline, so that the deviation of 5.4 degrees of the tool pipe is corrected.

Disclosure of Invention

The invention provides a method for correcting the middle of a jacking pipe, which realizes the correction from the middle of the jacking pipe, improves the maximum correction angle of the jacking pipe without changing a tool pipe (a drill bit) and avoids the condition that the jacking pipe is wasted due to misoperation in the construction process.

The technical scheme for realizing the aim of the invention is that the method for correcting the deviation in the middle of the jacking pipe comprises a pipe breaking step and a deviation correcting step;

the pipe breaking step is to break one or more sections of the pipe jacking pipe drilled into the soil layer or the rock stratum in a manual and/or mechanical mode;

the deviation rectifying step is to use a manual and/or mechanical mode to connect a plurality of small supporting rings and a plurality of small adjusting rings, and a plurality of small supporting rings are used for forming an annular supporting ring at the crushing position of the jacking pipe, a plurality of small adjusting rings are spliced to form an annular adjusting ring, one end of the supporting ring is sleeved on the adjusting ring and used for replacing one or more broken top pipes, wherein the non-connecting end of the supporting ring is sleeved on the sinking socket of the unbroken top pipe, the non-connecting end sleeve of the adjusting ring is inserted into the sinking socket of the unbroken top pipe, at least one hydraulic component is arranged on the inner wall of the supporting ring, the other end of the hydraulic component is connected with the adjusting ring, the adjusting ring deflects relative to the support ring under the pushing of the hydraulic component to form a middle-section deviation rectifying component arranged in a pipe section drilled into a soil layer or a rock layer top, and the adjusting ring of the middle-section deviation rectifying component deflects relative to the support ring under the pushing of the hydraulic component;

through the steps, the rectification of the whole jacking pipe is realized in the middle of the top pipe section which is drilled into the soil layer or the rock layer locally or in the middle of the jacking pipe.

Further, the deviation rectifying method also comprises a step of setting deviation rectifying points;

and in the deviation correcting point setting step, the actual pipe-jacking drilling route map is obviously deformed upwards or downwards compared with the pipe-jacking drilling design route map, the initial position or the adjacent position of the obvious deformation is set as a deviation correcting point, and in the pipe breaking step, one or more sections of pipe jacking at the deviation correcting point are subjected to pipe breaking.

Further, in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, when the drilling direction of the tool pipe meets the design requirement or reaches the deviation rectifying condition of the tool pipe, the middle deviation rectifying part stops working, the middle deviation rectifying part is disassembled into a plurality of small supporting rings and a plurality of small adjusting rings, the jacking pipe is pushed again, so that the blank position where the middle deviation rectifying part is originally arranged is covered by the rear jacking pipe, or the middle deviation rectifying part stops working and pushes the jacking pipe to enable the middle deviation rectifying part to move along with the jacking pipe.

Further, in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, the tool pipe deflects simultaneously, when the drilling direction of the tool pipe meets the design requirement or reaches the condition of self deviation rectifying, the middle deviation rectifying part stops working and is disassembled into a plurality of small supporting rings and a plurality of small adjusting rings, the jacking pipe is pushed again to enable the blank position where the middle deviation rectifying part is originally arranged to be covered by the rear jacking pipe, or the middle deviation rectifying part stops working and pushes the jacking pipe to enable the middle deviation rectifying part to move along with the jacking pipe.

Further, in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, then the middle deviation rectifying part is paused, the tool pipe is paused after the tool pipe is started to deflect, when the drilling direction of the tool pipe does not meet the design requirement or does not reach the self deviation rectifying condition, the steps are repeated to realize accumulative deviation rectifying, and when the drilling direction of the tool pipe meets the design requirement or reaches the self deviation rectifying condition.

Further, in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, and meanwhile, the tool pipe is started to deflect, when the drilling direction of the tool pipe does not meet the design requirement or does not reach the self deviation rectifying condition, the steps are repeated to realize accumulative deviation rectifying, so that the drilling direction of the tool pipe meets the design requirement or reaches the self deviation rectifying condition.

Furthermore, in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, then the middle deviation rectifying part is suspended, the tool pipe is started to deflect, when the drilling direction of the tool pipe does not meet the design requirement or cannot reach the self deviation rectifying condition, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, and the deviation rectifying is realized by cooperating with the deflection of the tool pipe.

Further, in the deviation rectifying step, the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, the tool pipe is started to deflect simultaneously, when the drilling direction of the tool pipe does not meet the design requirement or cannot reach the deviation rectifying condition of the tool pipe, the tool pipe deflects and stops deflecting, then the middle deviation rectifying part drives the jacking pipe between the middle deviation rectifying part and the tool pipe to deflect according to the deviation rectifying direction of the tool pipe, and then the middle deviation rectifying part stops, and the tool pipe is started to deflect again.

Further, in the pipe breaking step, a plurality of non-adjacent points on the top pipe drilled into the soil layer or the rock stratum are broken in a manual and/or mechanical mode;

in the deviation rectifying step, a plurality of middle section deviation rectifying components are arranged on a plurality of non-adjacent broken pipes, and the deviation rectification of the middle section of the jacking pipe is realized through the cooperation of the middle section deviation rectifying components.

The invention has the advantages that:

1) the traditional deviation rectifying mode is changed, the original deviation rectifying is realized by one-point deviation rectifying of the tool pipe (drill bit), the deviation rectifying range of the tool pipe is improved by rectifying on the middle pipeline of the jacking pipe, and the deviation rectifying range of the tool pipe can be improved by 10% or more by rectifying the deviation of the middle deviation rectifying device and the tool pipe step by step under the condition of not changing the structure of the existing tool pipe.

2) The correcting device in the middle of the jacking pipe can be disassembled and assembled, can be conveniently transported to any position where the jacking pipe is formed, namely, the correcting device in the middle of the jacking pipe does not need to be installed on the jacking pipe in advance, and can be randomly arranged according to the actual deviation place, so that the correction of any position of the jacking pipe is realized.

3) The jacking pipe middle deviation correcting device and the tool pipe are linked to correct the deviation (simultaneously start the deviation correction), so that the deviation correcting amplitude of the tool pipe can be improved by 30 percent.

Drawings

FIG. 1 is a logic diagram of the steps of the present invention.

FIG. 2 is a schematic structural diagram of a middle section deviation rectifying component.

Fig. 3 is a diagram comparing a design route map with an actual drilling route.

FIG. 4 is a first logic block diagram of the deskewing step.

FIG. 5 is a second logic diagram of the deskew step.

FIG. 6 is a third logic block diagram of the deskew step.

FIG. 7 is a fourth logic block diagram of the deskew step.

FIG. 8 is a fifth logic block diagram of the deskew step.

FIG. 9 is a sixth logic block diagram of the deskew step.

As shown in the figure, a pipe breaking step A, a deviation correcting step B and a deviation correcting point setting step C are carried out.

Detailed description of the preferred embodiment

As shown in FIG. 1, a method for correcting the deviation of the middle of a jacking pipe comprises a pipe breaking step A and a deviation correcting step B, preferably, a step C is arranged at a deviation correcting point before the pipe breaking;

and C, setting the deviation correcting points, wherein the actual top pipe drilling route pattern is obviously deformed upwards or downwards compared with the top pipe drilling design route pattern, for example, in the step 3, the initial position of the obvious change of the point D is set as the deviation correcting point, in the actual design process, the position near the point D (generally 5-20 meters towards the tool pipe by taking the point D as the center) can also be set as the deviation correcting point, and in the pipe breaking step B, one or more sections of the deviation correcting points are subjected to pipe breaking.

In the pipe breaking step A, one or more sections of the pipe jacking pipe drilled into the soil layer or the rock stratum are broken in a manual and/or mechanical mode;

in the deviation rectifying step B, a plurality of small support rings 1 and a plurality of small adjusting rings 2 (as shown in fig. 2) are manually and/or mechanically combined, a ring-shaped support ring is formed by the plurality of small support rings 1 at the broken position of the pipe jacking, and a ring-shaped adjusting ring is formed by splicing the plurality of small adjusting rings 2, one end of the support ring is sleeved on the adjusting ring to replace one or more broken pipe jacking, wherein the non-connecting end of the support ring is sleeved on the sinking socket of the unbroken pipe, the non-connecting end of the adjusting ring is sleeved in the sinking socket of the unbroken pipe jacking, at least one hydraulic part 3 (generally four hydraulic parts) is arranged on the inner wall of the support ring, the other end of the hydraulic part 3 is connected to the adjusting ring, the adjusting ring deflects relative to the support ring under the pushing of the hydraulic part to form a middle deviation rectifying part F arranged on the top pipe section drilled into the soil layer or the rock layer, the working principle of the middle section deviation rectifying component F can be realized by matching one hydraulic component with three hydraulic components or two hydraulic components with two hydraulic components, for example, four hydraulic components 3 are respectively arranged in twelve-point, three-point, six-point and nine-point directions, the deviation rectifying is needed to be conducted towards the twelve-point direction, only the hydraulic component 3 in the twelve-point direction is started, the hydraulic components 3 in other directions are not started, if the deviation rectifying is needed towards one-point or two-point directions, the two hydraulic components 3 in the twelve-point and six-point directions are started, the other directions are not started, the distance of pushing of the hydraulic components in the twelve-point and six-point directions is determined according to field calculation, the deflection of the adjusting ring relative to the supporting ring is realized, as shown in FIG. 4, in the deviation rectifying step B, the middle section deviation rectifying component F drives the pipe jacking deflection M between the middle section deviation rectifying component F and the tool pipe, when the drilling direction of the tool pipe G meets the design requirement or reaches the condition of self deviation rectification, the middle deviation rectifying component F stops working and is disassembled into a plurality of small supporting rings 1 and a plurality of small adjusting rings 2, then the jacking pipe is pushed to enable the blank position where the middle deviation rectifying component is originally arranged to be covered by the rear jacking pipe, and the middle deviation rectifying component F can also be combined to stop working and pushed to enable the middle deviation rectifying component F to move along with the jacking pipe.

Through the steps, the whole jacking pipe is rectified in the middle of the jacking pipe after the top pipe section of the soil layer or the rock layer is drilled, and the rectification amplitude of the tool pipe G is improved by over 10 percent under the condition that the structure of the tool pipe G is not changed.

In the deviation rectifying step B, as shown in FIG. 5, the middle deviation rectifying part F drives the jacking pipe between the middle deviation rectifying part F and the tool pipe G to deflect according to the deviation rectifying direction of the tool pipe G, the tool pipe G deflects at the same time, when the drilling direction of the tool pipe G meets the design requirement or reaches the condition of self deviation rectification, the middle deviation rectifying component F stops working and is disassembled into a plurality of small supporting rings 1 and a plurality of small adjusting rings 2, then the jacking pipe is pushed to enable the blank position where the middle deviation rectifying component F is originally arranged to be covered by the rear jacking pipe, preferably, the middle deviation rectifying component F stops working and pushes the jacking pipe to enable the middle deviation rectifying component to move along with the jacking pipe, the deviation rectifying mode is adopted, under the condition of not changing the structure of the tool tube G, the deviation rectifying amplitude of the tool tube G is improved by more than 30 percent, but the construction precision control requirement is extremely high, and the key point lies in the control of the synchronism of the deflection of the tool pipe G and the deflection of the middle-section deviation rectifying component F.

As shown in fig. 6, in the deviation rectifying step B, the middle deviation rectifying component F drives the push pipe between the middle deviation rectifying component F and the tool pipe G to deflect M1 ° according to the deviation rectifying direction of the tool pipe G, then the middle deviation rectifying component F pauses, the tool pipe G pauses after the tool pipe is started to deflect N1 °, when the drilling direction of the tool pipe G does not meet the design requirement or does not reach the self deviation rectifying condition, the above steps are repeated to realize the accumulated deviation rectifying (i.e. M1 ° + N1 ° + M2 ° + N2 ° + M3 ° + N3 °), beta is determined according to the geological condition, so that the drilling direction of the tool pipe G meets the design requirement or reaches the self deviation rectifying condition, by adopting the above manner, under the condition that the structure of the tool pipe G is not changed, the deviation rectifying amplitude of the tool pipe G is increased by more than 45%, and only a small deviation can be adjusted each time, the total correction (i.e. deflection) is achieved by accumulation, which has the disadvantage that all the time is relatively long.

As shown in fig. 7, in the deviation rectifying step B, the middle deviation rectifying component F drives the jacking pipe between the middle deviation rectifying component F and the tool pipe G to deflect Y1 ° according to the deviation rectifying direction of the tool pipe, and simultaneously starts the tool pipe to deflect X1 °, when the drilling direction of the tool pipe does not meet the design requirement or does not reach the self-deviation rectifying condition, the steps are repeated to realize accumulated deviation rectifying ((i.e. Y1 ° + X1 ° + Y2 ° + X β + X2 ° + Y3 ° + X3 °,)), so that the drilling direction of the tool pipe meets the design requirement or reaches the self-deviation rectifying condition, the deviation rectifying method is adopted, under the condition that the deviation rectifying structure of the tool pipe G is not changed, the amplitude of the tool pipe G is increased by more than 70%, only small deviation can be adjusted each time, the total deviation rectifying (i.e.) is realized by accumulation, the used time is reduced by 40% compared with the scheme of fig. 6, but the control of the deflection synchronism of the tool tube G and the deflection synchronism of the middle deviation rectifying component F is relatively difficult.

As shown in fig. 8, in the deviation rectifying step B, the middle deviation rectifying component F drives the jacking pipe between the middle deviation rectifying component F and the tool pipe G to deflect according to the deviation rectifying direction of the tool pipe G, then the middle deviation rectifying component F pauses, the tool pipe G is started to deflect, when the drilling direction of the tool pipe does not meet the design requirement or does not reach the self deviation rectifying condition, the middle deviation rectifying component F drives the jacking pipe between the middle deviation rectifying component F and the tool pipe G to deflect according to the deviation rectifying direction of the tool pipe G, and the tool pipe G deflects simultaneously to realize deviation rectification in coordination.

As shown in fig. 9, in the deviation rectifying step B, the middle deviation rectifying component F drives the jacking pipe between the middle deviation rectifying component F and the tool pipe G to deflect according to the deviation rectifying direction of the tool pipe G, and simultaneously starts the tool pipe G to deflect, when the drilling direction of the tool pipe G does not meet the design requirement or does not reach the self deviation rectifying condition, the tool pipe G stops deflecting, and then the middle deviation rectifying component F drives the jacking pipe between the middle deviation rectifying component F and the tool pipe G to deflect according to the deviation rectifying direction of the tool pipe G, and then the middle deviation rectifying component F stops, and starts the tool pipe G to deflect again.

Preferably, in the pipe breaking step a, a plurality of non-adjacent points on a top pipe drilled into the soil layer or the rock stratum are broken manually and/or mechanically;

in the deviation rectifying step B, a plurality of middle section deviation rectifying parts F are arranged on a plurality of non-adjacent broken pipes, and the deviation rectification of the middle section of the jacking pipe is realized through the cooperation of the plurality of middle section deviation rectifying parts F, so that the disjointed deflection of the plurality of middle section deviation rectifying parts F can be realized, the total deviation rectification can be realized through the cooperation of the plurality of middle section deviation rectifying parts F and the tool pipe, and the total deviation rectification can be realized through the simultaneous deflection of the plurality of middle section deviation rectifying parts F and the cooperation of the plurality of middle section deviation rectifying parts F and the tool pipe.