CN112196491B - Combined grading controllable hole packer device and method for underground engineering - Google Patents
Combined grading controllable hole packer device and method for underground engineering Download PDFInfo
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- CN112196491B CN112196491B CN202011047902.2A CN202011047902A CN112196491B CN 112196491 B CN112196491 B CN 112196491B CN 202011047902 A CN202011047902 A CN 202011047902A CN 112196491 B CN112196491 B CN 112196491B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 145
- 239000002184 metal Substances 0.000 claims abstract description 106
- 238000007789 sealing Methods 0.000 claims abstract description 97
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 239000011435 rock Substances 0.000 claims abstract description 27
- 238000010276 construction Methods 0.000 claims abstract description 24
- 238000005056 compaction Methods 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 238000002347 injection Methods 0.000 claims description 45
- 239000007924 injection Substances 0.000 claims description 45
- 239000011148 porous material Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention provides a combined grading controllable hole packer device for underground engineering, which comprises a subsection hole packer device and a sealing compaction degree valve centralized control device; the sealing compaction degree valve centralized control device comprises a valve centralized control box, sealing liquid pressure applying equipment and a sealing liquid container. The subsection hole sealing device comprises a rubber pipe, a plurality of metal pipes, a metal threaded connection section, a metal tail section and a liquid outlet port which is injected into a hole, wherein the rubber pipe is in direct extrusion contact with surrounding rock; the invention also provides a use method of the combined grading controllable hole packer device for underground engineering. The invention can realize the hole sealing tasks of different plugging sections and different plugging lengths, can adapt to the limitation of small movable space for underground engineering operation application, is convenient to assemble and disassemble, is beneficial to the efficient implementation of site in-situ hole sealing tests or construction processes, and is convenient to better complete the related site test or construction tasks of underground engineering.
Description
Technical Field
The invention relates to the technical field of rock mechanics and engineering, in particular to a combined grading controllable hole packer device for underground engineering and a use method thereof.
Background
In underground engineering, on-site rock mechanical tests or rock engineering construction are often carried out, surrounding rock is often drilled, and specific liquid is injected into the holes, so that the determination of physical property parameters of the rock mass or the improvement of rock mass mechanical indexes are realized. The effective blocking of the hole end has important practical significance for the efficient implementation of the field test or the construction process.
At present, the hole sealing device is mostly an independent hole sealing device, the length of a plugging section is short, the position of the plugging area is single, the plugging is easy to block in the disassembling process, and the actual requirement of more plugging liquid injection problems in rock mechanics and engineering can not be well met. With the comprehensive development of rock mass engineering construction, testing and construction tasks become more complex, and higher requirements are put forward on the high efficiency and flexibility of a plugging liquid injection device system.
In the current field rock mechanics and engineering practice, engineering field operations such as permeability test or grouting reinforcement construction are common, plugging with different effects is carried out on different sections of a hole, the plugging length is variable, and the requirements of rapid assembly and disassembly and the like become important trends of the development of subsequent engineering equipment. In addition, the underground engineering or hydraulic engineering construction site is often influenced by the actual environment, the operation space is smaller, the combined equipment can adapt to the flexibility requirement of more operations, and the defects and the shortcomings of the existing work can be overcome or improved to a certain extent.
Disclosure of Invention
The invention aims to solve the technical problem of providing a combined hierarchical controllable hole packer device for underground engineering, which can be used for carrying out partition plugging on different sections of an existing hole in combination with the rock test or construction requirement of an engineering site, has adjustable plugging interval length, is convenient to assemble and disassemble, and is convenient to better complete the site test or construction task related to the underground engineering or hydraulic engineering.
In order to solve the technical problems, the invention provides a combined grading controllable hole packer device for underground engineering, which comprises a subsection hole packer device and a sealing compaction degree valve centralized control device;
the sealing compaction degree valve centralized control device comprises a valve centralized control box, sealing liquid pressure applying equipment and a sealing liquid container; the hole sealing liquid containing container, the hole sealing liquid pressure applying device and the hole sealing liquid centralized control box are sequentially connected through the hole sealing liquid transmission conduit;
the whole subsection hole sealing device stretches into a hole for field test or construction, which is positioned on surrounding rock and is made of drilling equipment, and the subsection hole sealing device comprises a rubber pipe, a plurality of metal pipes, a metal threaded connection section, a metal tail section and a liquid outlet which is injected into the hole, wherein the rubber pipe is in direct extrusion contact with the surrounding rock; the rubber pipe is circumferentially wrapped on the periphery of the metal pipe; the metal pipes are connected through the metal threaded connection section; the metal tail section is positioned at the tail part of the hole for field test or construction and connected to the metal pipe of the tail section, and the liquid external conduit and the hole sealing liquid transmission conduit are respectively injected into the connecting hole; the liquid injection outlet in the hole is positioned at the head part of the hole for field test or construction and is connected to the metal pipe of the head section; an in-hole injection liquid conveying conduit is arranged in the metal pipe, so that in-hole injection liquid can enter the test hole; the outer wall of the metal pipe, which is in direct contact with the rubber pipe, is provided with a liquid pore; the hole sealing liquid is injected into the metal pipe and flows between the metal pipe and the hole injection liquid conveying conduit; the hole sealing liquid extrudes the rubber tube through the liquid hole, so that the rubber tube expands, deforms and extrudes surrounding rock, and the purpose of sealing test holes is achieved.
Further, the two ends of the metal threaded connecting section are provided with prefabricated threads, so that the metal pipes at each level can be conveniently connected and detached in a related way, and a liquid conveying guide pipe is injected into the hole to penetrate through the metal threaded connecting section and enter the metal pipe at the next level; the sealing liquid is transmitted to a sealing liquid diversion area between the liquid conveying conduit and the prefabricated screw threads, and is transmitted to an area between the next-stage metal pipe and the hole injection liquid conveying conduit.
Further, a first special cavity space and a second special cavity space are preset in the metal tail section; the special-shaped cavity space is used for injecting liquid into the external conduit and the hole of the through hole of the ditch, and the hole-sealing liquid entering through the hole-sealing liquid transmission conduit is led into the area between the metal tube and the hole-filling liquid transmission conduit by the special-shaped cavity space II.
Furthermore, the injection liquid inlet and outlet control valve is arranged on the injection liquid external conduit in the hole, so that the opening and closing of the injection liquid and the flow rate can be effectively controlled.
Further, the hole sealing liquid centralized control box is provided with an overall control switch and a hole sealing liquid grading controller; the overall control switch can control the overall injection condition of the hole sealing liquid; the electronic displacement elements are arranged at the positions of the liquid pores, and the hole sealing liquid classification controller can control the electronic displacement elements on the metal pipes at all levels, so that the opening and closing degree of the liquid pores on the metal pipes at all levels can be controlled.
Further, the device also comprises a cross rod type dismounting device, wherein the cross rod type dismounting device comprises a metal cross rod and a rubber hand-held grip section which are arranged on the metal tail section; the rubber hand-held grip section is positioned at the end part of the metal cross rod.
The invention also provides a use method of the combined grading controllable hole packer device for underground engineering, which comprises the following steps:
connecting all levels of metal pipes by utilizing a metal threaded connecting section, extending the metal pipe at the head position into a hole for field test or construction, and connecting the metal pipe at the tail position with a metal tail section;
starting a hole sealing liquid pressure applying device, so that the hole sealing liquid transmitted by the hole sealing liquid transmission conduit enters a region between the hole sealing liquid guiding metal pipe and the hole injection liquid transmission conduit through the metal tail section;
the hole sealing liquid extrudes the rubber tube through the liquid pore, so as to extrude surrounding rock, thereby plugging holes to be tested;
after the hole to be tested reaches the preset plugging effect, injecting the injection liquid transmitted by the external pipe for injecting the liquid into the hole, thereby completing the test.
Further, the device further comprises a step of controlling the opening and closing degree of the electronic displacement element arranged at the liquid gap position through the hole sealing liquid grading controller.
And further, after the test is finished, closing the injection liquid inlet and outlet control valve, and after the pressure of the injection liquid in the hole is reduced to a specified range or the injection liquid is introduced through an external pumping device, closing the hole sealing liquid pressure applying equipment, so that the expansion deformation of the rubber tube for extruding the surrounding rock of the test area is gradually weakened until the rubber tube is separated from contact with the surrounding rock.
Further, the device comprises a rubber holding power section at the end part of the metal cross rod for removing the hole sealing device of each level subsection along the outer direction of the hole for field test or construction, so as to complete the hole sealing task of the test.
According to the combined type grading controllable hole packer device for underground engineering and the application method thereof, provided by the invention, on the basis of the practice of the existing surrounding rock hole packer device, the combined type subsection hole packer device is used for realizing personalized plugging of different sections of a hole to be plugged, the valve centralized control box is used for independently regulating and controlling each plugging section, and the transverse rod type dismounting device is used for realizing convenient dismounting of the hole packer device, so that the defects of simple structure, single form, inconvenience in operation and the like of the existing hole packer device are overcome. The device is convenient to assemble and disassemble, is beneficial to high-efficiency implementation of site in-situ hole sealing tests or construction processes, and is convenient to complete relevant site tests or construction tasks of underground engineering better.
Drawings
Fig. 1 is an overall schematic diagram of a combined hierarchical controllable hole packer device for underground engineering provided by an embodiment of the invention;
fig. 2 is a schematic longitudinal section view of a subsection hole sealing device of a combined hierarchical controllable hole packer device for underground engineering, which is provided by the embodiment of the invention;
fig. 3 is a schematic cross-sectional view of a subsection hole sealing device of a combined hierarchical controllable hole packer device for underground engineering, which is provided by the embodiment of the invention;
fig. 4 is a schematic metal pipe structure of a combined hierarchical controllable hole packer device for underground engineering according to an embodiment of the present invention;
fig. 5 is a schematic longitudinal section view of a metal threaded connection section of a combined hierarchical controllable hole packer device for underground engineering according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a metal threaded connection section of a combined hierarchical controllable hole packer device for underground engineering according to an embodiment of the present invention;
fig. 7 is a schematic overall view of a metal tail section structure of a combined hierarchical controllable hole packer device for underground engineering according to an embodiment of the present invention;
fig. 8 is a schematic longitudinal section view of a metal tail section structure of a combined hierarchical controllable hole packer device for underground engineering, which is provided by the embodiment of the invention.
Detailed Description
Referring to fig. 1, the combined hierarchical controllable hole packer device for underground engineering provided by the embodiment of the invention comprises a subsection hole packer device for plugging holes based on an expansion deformation principle, a centralized control device for plugging compaction degree valves capable of controlling each subsection of the subsection hole packer section independently, and a cross rod type dismounting device convenient for dismounting. The subsection hole sealing device can be combined by adopting different numbers of metal pipes 5 according to the use requirements, so that the device is convenient to adapt to the engineering site and the test situation better. The centralized control device for the plugging compaction degree valve is used for controlling the hole sealing devices of all levels of subsections, so that the plugging requirements of different positions of the hole 1 along the radial direction can be met more flexibly. The horizontal rod type dismounting device can conveniently dismount the hole packer device with the test and test tasks ended, and can effectively improve the whole flow work efficiency of hole packer operation.
The subsection hole sealing device comprises a rubber tube 4, a metal tube 5, a metal threaded connection section 6, a metal tail section 7 and a hole injection liquid outlet 3. The metal pipe 5 is assembled by combining the metal threaded connection sections 6 along the radial direction, and hole sealers with different lengths which meet the requirements are obtained by adjusting the number of the metal pipe 5 and the metal threaded connection sections 6. And installing a metal tail section 7 at the position of the outer end point of the hole in the hole line direction of the preliminarily assembled sub-section hole sealing device combination of each stage, and additionally installing a hole in the position of the inner end point of the hole in the hole line direction to inject a liquid outlet 3.
Referring to fig. 2 and 3, for the subsection hole sealing device, an in-hole injection liquid transport conduit 21 is arranged at the inner position of the metal tube 5, so that in-hole injection liquid can conveniently enter the inside of the hole 1 to be tested.
Referring to fig. 4, in order to facilitate the hole sealing liquid to act on the rubber tube 4, liquid pores 22 are arranged on the outer wall of the metal tube 5, and an electronic displacement element 23 which can be controlled by the hole sealing liquid classification controller 15 is arranged at the position of the liquid pores 22, so as to effectively control the opening and closing degree of the liquid pores 22 on the metal tube 5. By controlling the opening and closing of the electronic displacement elements 23 at different positions, the designated section of the cavity 1 to be tested can be plugged.
Referring to fig. 5 and 6, in order to facilitate the assembly and disassembly of the metal pipes 5 of each stage, a pre-made thread 24 is provided at the end of the threaded connection section 6 of metal, and can be used in cooperation with a threaded port at a corresponding position of the metal pipe 5. In order to facilitate the independent transportation of two different liquids, namely the injected liquid in the hole and the hole sealing liquid, the injected liquid transportation conduit 21 in the hole passes through the metal threaded connecting section 6; the sealing liquid is transferred to the sealing liquid guiding area 27 between the liquid transporting conduit 21 and the preformed thread, and is transferred to the area between the next stage metal pipe 5 and the in-hole injection liquid transporting conduit 21.
Referring to fig. 7 and 8, for the metal tail section 7, a metal cross bar 9 is provided, and the metal tail section can be provided with a slot at a contact connection position so as to facilitate quick assembly, and a rubber hand-held grip section 8 is provided at the end of the metal cross bar 9 so as to reduce the influence of slipping and the like in the force application process of operators. The metal tail section 7 is internally provided with a first special-shaped cavity space 25 and a second special-shaped cavity space 26, wherein the first special-shaped cavity space 25 is used for injecting liquid into the outer conduit 10 and the liquid into the hole from the through hole of the ditch, and the second special-shaped cavity space 26 is used for guiding the hole sealing liquid entering through the hole sealing liquid transmission conduit 12 into the area between the metal pipe 5 and the liquid into the hole from the liquid transmission conduit 21.
The working principle and the working process of the combined grading controllable hole packer device for underground engineering provided by the embodiment of the invention are specifically described by taking tap water as hole sealing liquid and reinforcing slurry as hole injection liquid as an example:
firstly, determining the number of used sub-section hole sealing devices according to engineering site conditions and test requirements, debugging a hole sealing liquid grading controller 15 required by the test, and performing corresponding prefabrication preparation on hole sealing liquid tap water and in-hole injection liquid reinforcement slurry; secondly, installing and combining all stages of metal pipes 5 through a metal threaded connecting section 6, extending the metal pipe 5 at the head position into the hole 1 to be tested, connecting the metal pipe 5 at the tail position with a metal tail section 7, and penetrating all liquid conveying pipelines into and through subsections of all stages of hole sealing devices; then, the hole sealing liquid grading controller 15 is regulated by combining with a test task, so that the liquid pores 22 reserved on the outer wall of the metal pipe 5 reach a proper opening and closing degree; then, starting a hole sealing liquid pressure applying device 16, so that the hole sealing liquid tap water extrudes the surrounding rock 2 corresponding to the hole 1 to be tested through the rubber tube 4, and plugging of a specific section of the hole 1 to be tested is completed; then, after the hole 1 reaches a preset plugging effect, starting an injection liquid inlet and outlet control valve 11 to enable the injection liquid in the hole to strengthen the slurry to flow through the hole sealing devices of each subsection, and enabling the injection liquid outlet 3 in the hole to enter the hole 1 to finish the test; then, after the test is finished, closing the injection liquid inlet and outlet control valve 11, and after the injection liquid pressure in the holes is reduced to a preset range or the injection liquid is introduced, closing the hole sealing liquid pressure applying device 16 to gradually weaken the expansion deformation of the rubber tube 4 extruded by the surrounding rock 2 until the rubber tube is separated from contact with the surrounding rock 2; and finally, arranging a metal cross rod 8 on the metal tail section 7, and removing the hole sealing devices of the sub-sections at each level by utilizing the rubber hand-held grip section 8 at the end part to finish the hole sealing task of the test.
The combined type grading controllable hole packer device and method for underground engineering provided by the invention not only can realize hole packer tasks of different plugging sections and different plugging lengths, but also can adapt to the limitation of small movable space for underground engineering operation application, and the device is convenient to assemble and disassemble, is beneficial to high-efficiency implementation of site in-situ hole packer tests or construction processes, and is convenient to better complete relevant site tests or construction tasks of underground engineering.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a hierarchical controllable hole packer device of combination formula for underground works which characterized in that: the device comprises a subsection hole sealing device and a sealing compaction degree valve centralized control device;
the sealing compaction degree valve centralized control device comprises a valve centralized control box (13), sealing liquid pressure applying equipment (16) and a sealing liquid container (18); the hole sealing liquid containing container (18), the hole sealing liquid pressure applying device (16) and the valve centralized control box (13) are sequentially connected through the hole sealing liquid transmission conduit (12);
the whole subsection hole sealing device stretches into a hole (1) for field test or construction, which is positioned on the surrounding rock (2) and is made of drilling equipment, and the subsection hole sealing device comprises a rubber pipe (4), a plurality of metal pipes (5), a metal threaded connecting section (6), a metal tail section (7) and a liquid outlet (3) injected into the hole, wherein the rubber pipe is in direct extrusion contact with the surrounding rock (2); the rubber tube (4) is circumferentially wrapped on the periphery of the metal tube (5); the metal pipes (5) are connected through the metal threaded connection section (6); the metal tail section (7) is positioned at the tail part of the hole (1) for field test or construction and is connected to the metal pipe (5) of the tail section, and the metal pipe is respectively connected with the liquid injection external conduit (10) and the hole sealing liquid transmission conduit (12) in the hole; the liquid injection outlet (3) is positioned at the head part of the hole (1) for field test or construction and is connected to the metal pipe (5) of the head section; an in-hole injection liquid conveying conduit (21) is arranged in the metal pipe (5) so that in-hole injection liquid enters the test hole (1); the outer wall of the metal tube (5) which is in direct contact with the rubber tube (4) is provided with a liquid pore (22); the hole sealing liquid is injected into the metal pipe (5) and flows between the metal pipe (5) and the hole injection liquid conveying conduit (21); the sealing liquid extrudes the rubber tube (4) through the liquid pores (22), so that the rubber tube (4) expands, deforms and extrudes the surrounding rock (2), and the purpose of sealing the test holes (1) is achieved;
the metal tail section (7) is internally provided with a special-shaped cavity space I (25) and a special-shaped cavity space II (26); the special-shaped cavity space I (25) is used for injecting liquid into the external conduit (10) and the liquid conveying conduit (21) in the through hole of the ditch, and the special-shaped cavity space II (26) guides the hole sealing liquid entering through the hole sealing liquid conveying conduit (12) into the area between the metal tube (5) and the liquid conveying conduit (21) in the hole;
the two ends of the metal threaded connecting section (6) are provided with prefabricated threads (24) so as to facilitate the relevant connection and disassembly of the metal pipes (5) at each level, and a liquid conveying conduit (21) is injected into the hole to penetrate through the metal threaded connecting section (6) and enter the metal pipe (5) at the next level; the hole sealing liquid is transmitted to a hole sealing liquid diversion area (27) between the hole injection liquid conveying conduit (21) and the prefabricated screw thread (24) and is transmitted to an area between the next-stage metal pipe (5) and the hole injection liquid conveying conduit (21);
the valve centralized control box (13) is provided with an overall control switch (14) and a hole sealing liquid grading controller (15); the overall control switch (14) controls the overall injection condition of the hole sealing liquid; the electronic displacement elements (23) are arranged at the positions of the liquid pores (22), and the hole sealing liquid classification controller (15) can control the electronic displacement elements (23) on each level of metal pipes (5), so as to control the opening and closing degree of the liquid pores (22) on each level of metal pipes (5).
2. The combined hierarchical controllable hole packer device for underground works according to claim 1, wherein: an injection liquid inlet and outlet control valve (11) is arranged on the injection liquid external conduit (10) in the hole, so that the opening and closing of the injection liquid and the flow rate can be effectively controlled.
3. The combined hierarchical controllable hole packer device for underground works according to any one of claims 1-2, further comprising a cross rod type dismounting device, wherein the cross rod type dismounting device comprises a metal cross rod (9) and a rubber hand-held grip section (8) which are arranged on the metal tail section (7); the rubber hand-held grip section (8) is positioned at the end part of the metal cross rod (9).
4. The method of using a combined hierarchical controllable hole packer device for underground works according to any one of claims 1-2, comprising:
connecting all levels of metal pipes (5) by utilizing a metal threaded connecting section (6), extending the metal pipe (5) at the head position into a hole (1) for field test or construction, and connecting the metal pipe (5) at the tail position with a metal tail section (7);
starting a sealing liquid pressure applying device (16) so that the sealing liquid conveyed by a sealing liquid conveying conduit (12) enters a region between a sealing liquid guiding metal pipe (5) and an in-hole injection liquid conveying conduit (21) through a metal tail section (7);
the hole sealing liquid extrudes the rubber tube (4) through the liquid pore (22) so as to extrude the surrounding rock (2), thereby plugging the hole (1) to be tested;
after the hole (1) to be detected reaches a preset plugging effect, injecting the injection liquid transmitted by the injection liquid external conduit (10) in the hole into the hole (1), thereby completing the test.
5. The method as recited in claim 4, further comprising:
the opening and closing degree of the electronic displacement element arranged at the liquid gap position is controlled by a hole sealing liquid grading controller (15).
6. The method as recited in claim 4, further comprising:
after the test is finished, the injection liquid inlet and outlet control valve (11) is closed, and after the pressure of the injection liquid in the hole (1) is reduced to a specified range or the injection liquid is introduced through an external pumping device, the hole sealing liquid pressure application equipment (16) is closed, so that the expansion deformation of the rubber tube (4) for extruding the surrounding rock of the test area is gradually weakened until the rubber tube is separated from the surrounding rock (2).
7. The method as recited in claim 4, further comprising:
the rubber hand-held grip section (8) at the end part of the metal cross rod (9) is used for removing the hole sealing device of each stage subsection along the outer direction of the hole (1) for field test or construction, so that the hole sealing task of test and test is completed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011047902.2A CN112196491B (en) | 2020-09-29 | 2020-09-29 | Combined grading controllable hole packer device and method for underground engineering |
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| CN202011047902.2A CN112196491B (en) | 2020-09-29 | 2020-09-29 | Combined grading controllable hole packer device and method for underground engineering |
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| CN112196491B true CN112196491B (en) | 2024-03-19 |
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| CN113514383B (en) * | 2021-06-18 | 2023-09-19 | 西安科技大学 | Device and method for testing heights of two belts of top plate |
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| CN206513338U (en) * | 2016-11-23 | 2017-09-22 | 山西景安机电制造有限公司 | A kind of slip casting type hole packer of new blocked gas drainage hole |
| CN207194943U (en) * | 2017-09-30 | 2018-04-06 | 西安科技大学 | A kind of Drillhole gas pumping laboratory analog system |
| CN108708768A (en) * | 2018-06-04 | 2018-10-26 | 徐州中国矿大岩土工程新技术发展有限公司 | Slip casting tube head, grouting device and its construction method |
| CN214330588U (en) * | 2020-09-29 | 2021-10-01 | 清华大学 | Combined type grading controllable hole packer device for underground engineering |
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