1. A continuous in-situ test while drilling power driving device is characterized by comprising:

a drill pipe (22) within which the in situ test assembly may be received and supported;

a drilling apparatus (2) having a drill pipe gripping device;

the lifting platform is arranged on the drilling machine and can lift together with the drill pipe clamping device;

a cable (14) having one end connected to the in situ test assembly and capable of penetrating into the interior of the drill pipe (22);

a cable guide fixed above the lifting platform for guiding the cable (14);

a jaw (132) coaxial with the in-situ test assembly and capable of being opened/closed upwards relative to a jaw center axially moving by the in-situ test assembly;

the jaw furling device is used for contracting and resetting the jaw (132);

the sliding block is arranged above the clamping jaw (132), is coaxial with the in-situ test assembly and can axially move relative to the in-situ test assembly;

the positioning groove (2211) is arranged on the inner wall of the drill pipe (22), and the lower end of the positioning groove is used for abutting against the expanded claw (132);

when the in-situ test assembly is lowered to the position and is supported by the drill pipe (22), the cable (14) in the drill pipe (22) is further loosened, and the sliding block slides downwards under the action of gravity to open the clamping jaws (132) and enable the clamping jaws (132) to abut against the positioning grooves (2211).

2. The continuous while-drilling in-situ test power-driven device of claim 1, wherein: the cable (14) is connected with a signal receiving device (24).

3. The continuous while drilling in-situ test power-driven apparatus of claim 1, comprising: the cable guide device is a winding device (211), and the winding device (211) is fixed on a transverse sliding rail (213) and can transversely move along with the sliding rail (213) so as to adjust the central position of the cable (14) relative to the drill pipe (22).

4. The continuous while drilling in-situ test power-driven apparatus of claim 1, comprising: the cable guide device is a pulley (214), and the pulley (214) is fixed on a transverse sliding rail (213) and can transversely move along with the sliding rail (213) so as to adjust the central position of the cable (14) relative to the drill pipe (22); the cable (14) is connected with the signal receiving device (24) through the pulley (214) and the body winding device (215) in sequence.

5. The cabled lightweight while-drilling in-situ test system according to claim 1, wherein:

the in-situ testing assembly (1) comprises a testing device (11), a sealing device (12) and a hanging and positioning device (13) from bottom to top;

the upper end of the testing device (11) is fixedly connected with a lower end cover (121) of the sealing device (12);

the upper end of the sealing device (12) is fixedly connected with the lower end of a hanger bracket (131) of the hanging and positioning device (13), and the upper end of a mandrel (135) of the hanging and positioning device (13) is fixedly connected with a cable bearing joint (138); the cable bearing joint (138) is directly fixedly connected with the middle part of the cable (14).

6. The cabled lightweight while-drilling in situ test system according to claim 5, wherein: the lower end cover (121) of the sealing device (12) is fixedly connected with a cable joint sealing barrel (122), and one side of the cable joint sealing barrel is provided with an opening to provide a cable joint operation space.

7. The continuous while-drilling in-situ test power-driven device of claim 5, wherein:

the hanger bracket (131) of the hanging and positioning device (13) is fixedly connected with the upper end cover (133), the jaw (132) is fixed at the hinge lug position at the lower part of the hanger bracket (131) through a jaw pin shaft (1321), the jaw furling device (134) enables the jaw to keep a furled state when no external force acts on the jaw, the mandrel (135) is inserted into the hanger bracket (131) through the upper end cover (133) and can freely slide up and down, the sliding block (136) is fixed at the outer side of the mandrel (135) and is positioned below the upper end cover (133), the spring (137) is arranged between the sliding block (136) and the upper end cover (133), and the cable bearing joint (138) is sleeved and fixed at the upper end of the mandrel (135);

when the in-situ test assembly (1) is pulled by the cable (14), the spring (137) is in a compressed state, when the in-situ test assembly (1) is lowered to the positioning step (2212), the slide block (136), the mandrel (135) and the cable bearing joint (138) integrally move downwards under the self-weight and the rebound action of the spring (137), wherein the slide block (136) falls to push the clamping jaws (132) to open, and the opened clamping jaws (132) can be propped in the positioning grooves (2211);

when the test is finished and the cable is pulled, the sliding block (136), the mandrel (135) and the cable bearing joint (138) integrally move upwards relative to the hanger bracket (131), the spring (137) is compressed, the sliding block (136) is separated from the clamping jaws (132), and the clamping jaws (132) are retracted under the action of the clamping jaw furling device (134) and separated from the positioning grooves (2211).

8. The continuous while-drilling in-situ test power-driven device of claim 1, wherein: the drill pipe (22) comprises a positioning drill pipe (221) and a conventional drill pipe (222), the positioning drill pipe (221) is located at the lowest position, the conventional drill pipe (222) is used for lengthening the drill pipe (22), and the positioning groove (2211) and the positioning step (2212) are located in the positioning drill pipe (221).

9. A continuous in-situ test power driving construction method while drilling is characterized in that:

adopting the continuous in-situ test while drilling power driving device as claimed in any one of claims 1-9;

s1, drilling construction: rotating and drilling to an in-situ test design elevation;

s2, placing an in-situ test assembly: lifting the drill pipe (22) for a certain distance, and placing the in-situ test assembly (1) inside the drill pipe (22); opening the cable storage device (21) to pay out the cable (14), and putting the in-situ test assembly (1) to the positioning step (2212); loosening the cable (14), enabling the mandrel sliding block (136) to slide downwards under the action of self weight, and enabling the sliding block (136) to push the clamping jaw (132) to prop open and abut against a positioning groove (2211) in the inner wall of the positioning drill pipe (221);

s3, in-situ testing: a drill rig provides static pressure or torsional pressure acting force for a drill pipe, so that test power is provided on the ground, and an in-situ test is performed;

s4, taking out the in-situ test assembly, and drilling by using the lengthened drill pipe: after the in-situ test is finished, extracting the in-situ test assembly (1), lengthening a conventional drill pipe (222), and continuously performing rotary drilling;

and S5, repeating the steps 2-4 until the in-situ test while drilling at all depths is completed.

Background

The geotechnical investigation in-situ test technology can provide reliable geotechnical physical mechanical property parameters for underground space engineering design, and deeper geotechnical physical mechanical property parameters need to be obtained by an in-situ test means along with the progress of deep underground space development projects. The traditional in-situ test equipment has limited test depth, is difficult to meet the requirements of deep underground space development and utilization, and urgently needs to be developed and researched for a complete in-situ test equipment device and a construction method suitable for the underground deep space.

Disclosure of Invention

The invention aims to provide a continuous in-situ test power driving device while drilling and a construction method, wherein a driving drill rod is modified to be through long with a drill pipe so as to accommodate an in-situ test assembly, on one hand, drilling rotary drilling and in-situ test are alternately carried out under the condition of not lifting the drill, and the application depth is increased through drilling auxiliary in-situ test; on the other hand, a reducing joint is not needed to be arranged to connect the enlarged drill pipe and the active drill rod of the drilling machine, so that the working procedure is saved, and the construction convenience is improved; the integration of a cable storage device, a signal receiving device and a drilling machine is realized, the problems of the height increase of the top of a drill pipe and the placement of the cable storage device are solved, the independent system integration is realized, and the portability of equipment is improved; the drilling machine provides static pressure or torsional pressure acting force for the drill pipe, so that testing power is provided for the ground, and the total weight of the testing system is reduced.

The invention adopts the following technical scheme:

a continuous in-situ test while drilling power drive device comprises: a drill pipe 22 within which the in situ test assembly may be received and supported; a drilling apparatus 2 having a drill pipe gripping device; the lifting platform is arranged on the drilling machine and can lift together with the drill pipe clamping device; a cable 14 having one end connected to the in situ test assembly and capable of penetrating into the interior of the drill pipe 22; a cable guide fixed above the elevating platform for guiding the cable 14; a jaw 132 coaxial with the in-situ test assembly and capable of being opened/closed upward relative to a jaw center axially moving relative to the in-situ test assembly; a jaw furling device for contracting and resetting the jaw 132; the sliding block is arranged above the clamping jaw 132, is coaxial with the in-situ testing device and can axially move relative to the in-situ testing assembly; the positioning groove 2211 is arranged on the inner wall of the drill pipe 22, and the lower end of the positioning groove is used for abutting against the expanded claw 132; when the in situ test assembly is lowered into position and supported by the drill pipe 22, the cable 14 within the drill pipe 22 is further slackened and the slide slides downwardly under gravity to spread the jaws 132 apart and over the jaws 132 against the detents 2211.

Preferably, the cable 14 is connected to a signal receiving device 24.

Preferably, the cable guide device is a winding device 211, and the winding device 211 is fixed on a transverse slide rail 213 and can move transversely with the slide rail 213 to adjust the center position of the cable 14 relative to the drill pipe 22.

Preferably, the cable guide is a pulley 214, and the pulley 214 is fixed on a transverse slide rail 213 and can move transversely with the slide rail 213 to adjust the central position of the cable 14 relative to the drill pipe 22; the cable 14 is connected to the signal receiver 24 via the pulley 214 and the body hoist 215.

Preferably, the in-situ testing assembly 1 comprises a testing device 11, a sealing device 12 and a hanging and positioning device 13 from bottom to top; the upper end of the testing device 11 is fixedly connected with the lower end cover 121 of the sealing device 12; the upper end of the sealing device 12 is fixedly connected with the lower end of a hanger bracket 131 of the hanging and positioning device 13, and the upper end of a mandrel 135 of the hanging and positioning device 13 is fixedly connected with a cable bearing joint 138; the cable support tab 138 is directly fixedly attached to the middle of the cable 14.

Still further, the lower end cap 121 of the sealing device 12 is fixedly connected to the cable joint sealing cylinder 122, and one side of the cable joint sealing cylinder is open to provide a cable joint operation space.

Furthermore, the hanger bracket 131 of the hanging and positioning device 13 is fixedly connected with the upper end cap 133, the jaws 132 are fixed at the lower hinge ear position of the hanger bracket 131 through the jaw pin 1321, the jaw furling device 134 enables the jaws to keep a furled state when no external force acts on the jaws, the mandrel 135 is inserted through the hanger bracket 131 of the upper end cap 133 and can freely slide up and down, the slider 136 is fixed at the outer side of the mandrel 135 and is positioned below the upper end cap 133, the spring 137 is arranged between the slider 136 and the upper end cap 133, and the cable bearing joint 138 is sleeved and fixed at the upper end of the mandrel 135; when the home position test assembly 1 is pulled by the cable 14, the spring 137 is in a compressed state, and when the home position test assembly 1 is lowered to the positioning step 2212, the slider 136, the mandrel 135 and the cable bearing joint 138 integrally move downwards under the action of self weight and the resilience of the spring 137, wherein the slider 136 falls to push the jaws 132 to open, and the opened jaws 132 can be abutted in the positioning groove 2211; when the test is finished and the cable is pulled, the sliding block 136, the mandrel 135 and the cable bearing joint 138 move upwards integrally relative to the hanger bracket 131, the spring 137 is compressed, the sliding block 136 is separated from the claw 132, and the claw 132 is retracted by the claw folding device 134 and separated from the positioning groove 2211.

Preferably, the drill pipe 22 comprises a positioning drill pipe 221 and a conventional drill pipe 222, the positioning drill pipe 221 is located at the lowest position, the conventional drill pipe 222 is used for lengthening the drill pipe 22, and the positioning groove 2211 and the positioning step 2212 are located in the positioning drill pipe 221.

A continuous in-situ test power driving construction method while drilling adopts the continuous in-situ test power driving device while drilling;

s1, drilling construction: rotating and drilling to an in-situ test design elevation;

s2, placing an in-situ test assembly: lifting the drill pipe 22 for a certain distance, and placing the in-situ test assembly 1 inside the drill pipe 22; opening the cable storage device to pay out the cable 14, and lowering the in-situ test assembly 1 to the positioning step 2212; loosening the cable 14, sliding the mandrel slide block 136 downwards under the action of self weight, and pushing the jaws 132 to prop open by the slide block 136 to abut against the positioning groove 2211 on the inner wall of the positioning drill pipe 221;

s3, in-situ testing: a drill rig provides static pressure or torsional pressure acting force for a drill pipe, so that test power is provided on the ground, and an in-situ test is performed;

s4, taking out the in-situ test assembly, and drilling by using the lengthened drill pipe: after the in-situ test is finished, extracting the in-situ test assembly 1, lengthening the conventional drill pipe 222, and continuously performing rotary drilling;

and S5, repeating the steps 2-4 until the in-situ test while drilling at all depths is completed.

The invention has the beneficial effects that:

1) the in-situ test assembly is arranged in the drill pipe, the positioning groove and the positioning step are arranged on the inner wall of the drill pipe, the in-situ test assembly is provided with the clamping and locking structure, the in-situ test assembly is locked when being lowered to a test depth, and the drill pipe provides power support for the test assembly.

2) The in-situ testing device under the condition of not lifting a drill pipe and a drilling machine are alternately used, and the application depth of an in-situ testing means is increased through drilling auxiliary drilling;

3) modifying the drilling machine to enable the main drill pipe to be long, clamping the drill pipe by the drill pipe clamping device, and saving the construction process of disassembling the reducing joint (between the driving drill pipe and the drill pipe);

4) the cable storage device and the signal receiving device are integrated on the drilling machine, the in-situ test assembly is extracted from the top of the drill pipe, and the portability of the device is improved.

5) The in-situ test assembly is ingenious in structural design, and the in-situ test assembly is provided with the clamping jaws, the clamping jaw furling device, the sliding block and the positioning grooves and the positioning steps which are matched with the positioning grooves and the positioning steps on the drill rod.

6) The cable storage device achieves the lowering of the in-situ test assembly and the control of the vertical state of the cable through the lifting platform which is lifted together with the drill pipe clamping device and the sliding rail structure which moves on the plane.

Drawings

Fig. 1 shows a first step in the first embodiment of the present invention: schematic representation of the drilling construction.

Fig. 2 shows a second step in the first embodiment of the present invention: schematic diagram of the drop in place test assembly.

Fig. 3 shows a third step in the first embodiment of the present invention: schematic of in situ testing (static cone penetration) was performed.

Fig. 4 shows a fourth step in the first embodiment of the present invention: and taking out the in-situ test assembly, and lengthening the drilling pipe to drill.

Fig. 5 shows a fifth step in the first embodiment of the present invention: and repeating the second step to the fourth step to complete the in-situ test of all the depths.

FIG. 6 shows a first step of the present invention: schematic representation of the drilling construction.

FIG. 7 shows a second step of the present invention: schematic diagram of the drop in place test assembly.

FIG. 8 shows a third step of the present invention: schematic of in situ testing (static cone penetration) was performed.

FIG. 9 shows a fourth step in the second embodiment of the present invention: and taking out the in-situ test assembly, and lengthening the drilling pipe to drill.

FIG. 10 shows a fifth step in the second embodiment of the present invention: and repeating the second step to the fourth step to complete the in-situ test of all the depths.

FIG. 11 is a schematic view of an in situ test assembly.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

The first embodiment is as follows:

referring to fig. 1-11, a continuous while-drilling in-situ test power drive apparatus, comprising: a drill pipe 22 within which the in situ test assembly may be received and supported; a drilling apparatus 2 having a drill pipe gripping device; the lifting platform is arranged on the drilling machine and can lift together with the drill pipe clamping device; a cable 14 having one end connected to the in situ test assembly and capable of penetrating into the interior of the drill pipe 22; a cable guide fixed above the elevating platform for guiding the cable 14; a jaw 132 coaxial with the in-situ test assembly and capable of being opened/closed upward relative to a jaw center axially moving relative to the in-situ test assembly; a jaw furling device for contracting and resetting the jaw 132; the sliding block is arranged above the clamping jaw 132, is coaxial with the in-situ test assembly and can axially move relative to the in-situ test assembly; the positioning groove 2211 is arranged on the inner wall of the drill pipe 22, and the lower end of the positioning groove is used for abutting against the expanded claw 132; when the in situ test assembly is lowered into position and supported by the drill pipe 22, the cable 14 within the drill pipe 22 is further slackened and the slide slides downwardly under gravity to spread the jaws 132 apart and over the jaws 132 against the detents 2211.

Specifically, the embodiment of the present disclosure provides a continuous while-drilling in-situ test power driving device and a construction method thereof, as shown in fig. 1 to 11, the device specifically includes: the in-situ test assembly 1 and the drilling equipment 2;

as shown in fig. 11, the in-situ test assembly 1 includes a test device 11, a sealing device 12, a hanging positioning device 13, a cable 14, wherein the sealing device 12 includes a lower end cap 121 and a cable connector sealing cylinder 122, and the hanging positioning device 13 includes a hanger bracket 131, a claw 132, an upper end cap 133, a claw furling device 134, a mandrel 135, a slider 136, a spring 137, a cable bearing connector 138;

the upper end of the testing device 11 is fixedly connected with the lower end cover 121 of the sealing device 12, the upper end of the sealing device 12 is fixedly connected with the lower end of the hanger bracket 131 of the hanging and positioning device 13, and the upper end of the mandrel 135 of the hanging and positioning device 13 is fixedly connected with a cable bearing joint 138;

the lower end cover 121 of the sealing device 12 is fixedly connected with a cable joint sealing cylinder 122, and one side of the cable joint sealing cylinder is opened to provide a cable joint operation space;

the hanger bracket 131 of the hanging and positioning device 13 is fixedly connected with the upper end cover 133, the jaws 132 are fixed at the lower hinge lug positions of the hanger bracket 131 through jaw pin shafts, the jaw furling device 134 enables the jaws to keep a furled state when no external force acts on the jaws, the mandrel 135 is inserted through the upper end cover 133 and the hanger bracket 131 and can freely slide up and down, the slider 136 is fixed at the outer side of the mandrel 135 and is positioned below the upper end cover 133, the spring 137 is arranged between the slider 136 and the upper end cover 133, and the cable bearing joint 138 is externally sleeved and fixed at the upper end of the mandrel 135. When the home position test assembly 1 is pulled by the cable 14, the spring 137 is in a compressed state, and when the home position test assembly 1 is lowered to the positioning step 2212, the slider 136, the mandrel 135 and the cable bearing joint 138 integrally move downwards under the action of self weight and the resilience of the spring 137, wherein the slider 136 falls to push the jaws 132 to open, and the opened jaws 132 can be abutted in the positioning groove 2211; when the test is finished and the cable is pulled, the sliding block 136, the mandrel 135 and the cable bearing joint 138 move upwards integrally relative to the hanger bracket 131, the spring 137 is compressed, the sliding block 136 is separated from the claw 132, and the claw 132 is retracted by the claw folding device 134 and separated from the positioning groove 2211.

The lower end of the cable 14 is connected with the testing device 11, passes through the sealing device 12 and the hanging positioning device 13 from bottom to top, penetrates out from the upper part of the cable bearing joint 138, and is connected to the cable accommodating device 21 and the signal receiving device 24.

The test device 11 is used for static sounding and comprises a probe rod and a probe head.

The drilling equipment 2 comprises a cable storage device, a drill pipe 22, a drilling machine 23 and a signal receiving device 24, wherein the internal space of the drill pipe 22 can accommodate the in-situ test assembly 1, the drill pipe 22 comprises a positioning drill pipe 221 and a conventional drill pipe 222, the positioning drill pipe 221 is located at the lowest part, the conventional drill pipe 222 is used for connecting the long drill pipe, a positioning groove 2211 is arranged on the inner wall of the positioning drill pipe 221, a positioning step 2212 is arranged on the inner side wall of the bottom, and a reaming device 2213 is arranged on the outer side wall of the bottom. The cable housing and signal receiving device 24 is integrated with the drilling machine 23.

The cable storage device comprises a winding device 211, a hollow lifting platform 212 and a slide rail 213. One end of the winding device 211 is connected with the in-situ test assembly, and the other end of the winding device is connected with the signal receiving device 24, so that a cable can be manually or electrically stored; the hollow lifting platform 212 is of a hollow structure, allows a drill pipe and an in-situ test assembly to pass through, and can lift at a certain distance under the control of a central control system of the drilling machine, so that the drill pipe 22 and the hoisting device 211 lift at the same distance; the sliding rail 213 is provided with a winding device 211, and the winding device 211 can move back and forth along the sliding rail 213, so that the cable is in a vertical state during in-situ testing.

The specific implementation of the case provides a continuous in-situ test power-driven construction method while drilling, which comprises the following steps:

as shown in fig. 1, step one: and (5) drilling construction. The hoisting device 211 moves backwards along the slide rail 213, and the drill pipe 22 is rotated and drilled to the designed elevation for the in-situ test.

As shown in fig. 2, step two: and putting the in-situ test assembly. The drill pipe 22 is lifted for a certain distance under the action of the hollow lifting platform 212, the hoisting device 211 ascends at equal intervals, the in-situ test assembly 1 is placed inside the drill pipe 22, the hoisting device 211 moves forwards along the slide rail 213 to the position right above the drill pipe, the cable storage device is opened to release the cable 14, and the in-situ test assembly 1 is placed to the positioning step 2212. When the cable 14 is released, the mandrel slide block 136 slides downwards under the action of self weight, and the slide block 136 pushes the jaws 132 to be spread against the positioning grooves 2211 on the inner wall of the positioning drill pipe 221.

As shown in fig. 3, step three: static cone penetration test. The drill pipe 22 descends under the action of the hollow lifting platform 212, the hoisting device 211 descends at equal intervals, the drill pipe is subjected to downward static pressure acting force, test power is provided on the ground, an in-situ test is carried out, and test data are transmitted to the signal receiving device 24 through the cable 14.

As shown in fig. 4, step four: and taking out the in-situ test assembly, and drilling by lengthening the drill pipe. After the in-situ test is finished, the hoisting device 211 moves backwards along the slide rail 213, the in-situ test assembly 1 is extracted, the conventional drill pipe 222 is lengthened, and the rotary drilling is continued.

As shown in fig. 5, step five: and (4) repeating the steps 2-4 until the in-situ test while drilling at all the depths is completed.

Example two:

the embodiment is the same as the first embodiment except for the cable storage device. See in particular fig. 6-11.

The cable storage device in this case includes a slide rail 213, a pulley 214, a body winding device 215, and a lifting platform 216. The sliding rail 213 is provided with a pulley 214, and the pulley 214 can move back and forth along the sliding rail 213, so that the cable is in a vertical state during the in-situ test. The pulley 214, the body hoisting device 215 and the drill pipe middle shaft are positioned on the same plane; one end of the machine body winding device 215 is connected with the in-situ test assembly, the other end of the machine body winding device is connected with the signal receiving device 24, a cable can be manually or electrically stored, the height of the winding device 215 is lower than that of the top of the drill pipe, and the transformation of the stress direction is realized through the pulley 214; the lifting platform 216 can be controlled by a central control system of the drilling machine to lift a certain distance, so that the drilling pipe 22 and the pulley 214 can be lifted at the same distance.

The specific implementation of the case provides a continuous in-situ test power-driven construction method while drilling, which comprises the following steps:

as shown in fig. 1, step one: and (5) drilling construction. The pulley 214 moves back along the slide 213 and the drill pipe 22 is rotated to the designed elevation for in situ testing.

As shown in fig. 2, step two: and putting the in-situ test assembly. The drill pipe 22 is lifted for a certain distance under the action of the lifting platform 216, the pulley 214 ascends at equal intervals, the in-situ test assembly 1 is placed inside the drill pipe 22, the pulley 214 moves to the position right above the drill pipe along the sliding rail 213, the cable storage device is opened to pay out the cable 14, and the in-situ test assembly 1 is placed to the positioning step 2212. When the cable 14 is released, the mandrel slide block 136 slides downwards under the action of self weight, and the slide block 136 pushes the jaws 132 to be spread against the positioning grooves 2211 on the inner wall of the positioning drill pipe 221.

As shown in fig. 3, step three: static cone penetration test. The drill pipe 22 descends under the action of the lifting platform 216, the pulleys 214 descend at equal intervals, the drill pipe is subjected to downward static pressure acting force, test power is provided on the ground, in-situ test is conducted, and test data are transmitted to the signal receiving device 24 through the cable 14.

As shown in fig. 4, step four: and taking out the in-situ test assembly, and drilling by lengthening the drill pipe. After the in-situ test is completed, the pulley 214 moves backwards along the slide rail 213, the in-situ test assembly 1 is extracted, the conventional drill pipe 222 is lengthened, and the rotary drilling is continued.

As shown in fig. 5, step five: and (4) repeating the steps 2-4 until the in-situ test while drilling at all the depths is completed.

The method is not limited to the form, for example, the hoisting device is lower than the top of the drill pipe, and the transformation of the stress direction is realized through a pulley or a pulley block, which belong to optional variations of the method.