CN-121977989-A - Portable multifunctional permeability in-situ test probe for surrounding rock geological structure surface

CN121977989ACN 121977989 ACN121977989 ACN 121977989ACN-121977989-A

Abstract

The invention discloses a portable multifunctional in-situ test probe for permeability of surrounding rock geological structure surface, which belongs to the technical field of geological monitoring, and comprises a probe main body, two groups of plug units arranged at two ends of the probe main body, and a sealing part connected with the outer end of each group of plug units, the probe body comprises a detection section pipe positioned in the middle section, connecting pipes symmetrically arranged at two ends of the detection section pipe, connecting seats arranged between each group of connecting pipes and the detection section pipe, and limiting seats arranged at the outer ends of each group of connecting pipes. According to the invention, a certain number of detection elements such as the electrodes, the pore pressure sensors, the optical sensors, the acoustic sensors and the like are arranged on the detection section tube in a concentrated manner, multifunctional data are integrated, a mode of joint testing from three directions of light, sound and electricity is realized, the permeability parameters of the rock mass are comprehensively interpreted, and the accuracy of the detection data is effectively and strongly ensured.

Inventors

WU YUN
HUANG ZHEN
LI XIAOZHAO
ZHANG ZHONGYUAN
LIN JIAN
ZENG WEI
JIN XIN
WANG JIAMIN

Assignees

中国矿业大学

Dates

Publication Date: 20260505
Application Date: 20260407

Claims (9)

1. The portable multifunctional in-situ permeability test probe for the surrounding rock geological structure surface comprises a probe main body (1), two groups of plug units (2) arranged at two ends of the probe main body (1), and sealing components (3) connected to the outer ends of each group of plug units (2), and is characterized in that the probe main body (1) comprises a detection section pipe (11) positioned at the middle section, connecting pipes (12) symmetrically arranged at two ends of the detection section pipe (11), connecting seats (13) arranged between each group of connecting pipes (12) and the detection section pipe (11), and limiting seats (14) arranged at the outer ends of each group of connecting pipes (12); The plug unit (2) comprises a sliding seat (21) which is inserted on the connecting pipe (12), a plurality of groups of support keels (22) which are arranged in the vertical direction and are evenly distributed around the extension of the sliding seat (21), and meanwhile, the top ends of each group of support keels (22) are connected to the connecting seat (13) and the plugging bag body (23) which is wrapped outside the plurality of groups of support keels (22).
2. The portable multifunctional surrounding rock geological structure surface permeability in-situ test probe according to claim 1, wherein the sliding seat (21) is connected to the connecting pipe (12) in a sliding manner in the vertical direction, the upper end of the sliding seat (21) is in a round table structure, two sides of the top end of the round table structure are provided with yielding notches, and meanwhile, the lower end of the sliding seat (21) is fixedly connected with the top end of the sealing component (3).
3. The portable multifunctional in-situ permeability test probe for surrounding rock geological structure surface according to claim 2, wherein two ends of the supporting keels (22) are fixedly connected to the connecting seat (13) and the sliding seat (21) respectively, meanwhile, the supporting keels (22) are made of elastic materials, and each group of supporting keels (22) is fixedly connected to the inner wall of the plugging bag body (23).
4. The portable multifunctional in-situ permeability test probe for surrounding rock geological structure surface according to claim 3, wherein two ends of the plugging capsule body (23) are fixedly connected to the outer walls of the connecting seat (13) and the sliding seat (21) respectively, and the plugging capsule body (23) comprises a main capsule body (231) sleeved on the outer sides of the multiple groups of supporting keels (22) and auxiliary capsule bodies (232) arranged at two ends of the main capsule body (231).
5. The portable multi-functional surrounding rock geological structure surface permeability in-situ test probe of claim 4, wherein the main bag body (231) and the auxiliary bag body (232) are made of rubber materials with elasticity and extensibility, and the elasticity and extensibility of the main bag body (231) are larger than those of the auxiliary bag body (232).
6. The portable multifunctional in-situ test probe for permeability of surrounding rock geological structure surface according to claim 5, wherein the whole sealing component (3) is of a telescopic corrugated pipe structure, two ends of the sealing component (3) are respectively connected with the sliding seat (21) and the limiting seat (14), and a water receiving groove (31) is formed in the sealing component (3).
7. The portable multifunctional in-situ permeability test probe for surrounding rock geological structure surface according to claim 1, wherein a water injection pipe (4) is arranged in the detection section pipe (11), the lower end of the water injection pipe (4) extends into one group of plug units (2) positioned below the probe main body (1), the top end of the water injection pipe (4) upwards penetrates through the plug units (2) positioned above the probe main body (1), and water outlets are formed in the parts, extending into the two groups of plug units (2), of the water injection pipe (4).
8. The portable multifunctional in-situ permeability test probe for surrounding rock geological structure surface according to claim 1, wherein the inside of the detection section pipe (11) is communicated with the connecting pipe (12) at the upper end, the top end of the connecting pipe (12) at the upper end upwards passes through the limiting seat (14), meanwhile, a connecting sleeve is arranged at the part of the connecting pipe passing through the limiting seat (14), and a plurality of groups of water outlets communicated with the outside are formed in the outer wall of the detection section pipe (11) in an equal division manner.
9. The portable multifunctional in-situ permeability test probe for surrounding rock geological structure surface according to claim 1 is characterized in that an electrode, a pore pressure sensor and an acoustic wave sensor are arranged in the detection section pipe (11), an optical sensor is arranged in the connecting seat (13), and the connecting seat (13) is fixedly connected with the inner end of the plugging capsule body (23).

Description

Portable multifunctional permeability in-situ test probe for surrounding rock geological structure surface Technical Field The invention relates to the technical field of geological monitoring, in particular to a portable multifunctional in-situ test probe for permeability of a surrounding rock geological structure surface. Background The complex geological structure surface refers to discontinuous interfaces with obvious permeability differences in rock mass, such as faults, joints, fracture networks and the like, are key control factors of groundwater seepage, oil gas migration and engineering stability, and the traditional permeability test method (such as a water pressurizing test and a drilling penetrometer) has the limitations of single-point measurement, isolated information, incapability of comprehensively representing spatial characteristics of the structure surface and the like, wherein the water pressurizing test is a field test for measuring the water permeability of an underground rock stratum in engineering geological investigation, a detection device (probe) is deeply drilled into a rock hole, then the upper end and the lower end of the detection device are plugged through two sets of plug devices, a section of relatively independent space exists between the detection device and the rock hole, then water is injected into the section of space under pressure, the relation between the water injection quantity and the pressure is recorded, and the permeability coefficient is calculated, and the permeability performance of the rock stratum is judged, but the rock mass seepage is extremely complex, the prior art usually adopts the drilling water pressurizing method to obtain the water permeability and the permeability coefficient of the rock soil mass, but the water pressurizing method is difficult to truly obtain test results, and test result data cannot be effectively ensured. Meanwhile, most of the plug devices used for developing the water pressing method in the prior art are single-tube top-pressing type rubber plugs with simple structures and easy operation, but the plugs of the model have the phenomenon of non-ideal sealing, especially the phenomenon that hole accidents easily occur when the hole wall of a soft rock stratum or a broken stratum is incomplete, the rubber plugs are excessively deformed to cause the blocking in holes, and the water-stopping plugs are easily blocked. Disclosure of Invention In view of the problems of the conventional portable multifunctional in-situ test probe for permeability of the geological structure surface of the surrounding rock, the invention provides the portable multifunctional in-situ test probe for permeability of the geological structure surface of the surrounding rock, which is used for solving the problems. In order to solve the technical problems, the invention provides a portable multifunctional in-situ test probe for permeability of a surrounding rock geological structure surface, which comprises a probe main body, two groups of plug units arranged at two ends of the probe main body, and a sealing part connected to the outer ends of each group of plug units, wherein the probe main body comprises a detection section pipe positioned at the middle section, connecting pipes symmetrically arranged at two ends of the detection section pipe, a connecting seat arranged between each group of connecting pipes and the detection section pipe, and a limiting seat arranged at the outer ends of each group of connecting pipes; The plug unit comprises a sliding seat inserted on the connecting pipe, a plurality of groups of support keels which are arranged in the vertical direction and are evenly distributed around the extension of the sliding seat, and simultaneously the top ends of each group of support keels are connected to the connecting seat and the plugging bag body wrapped outside the plurality of groups of support keels. The portable multifunctional permeability in-situ test probe for the surrounding rock geological structure surface is characterized in that the sliding seat is vertically connected to the connecting pipe in a sliding mode, the upper end of the sliding seat is of a round table structure, two sides of the top end of the round table structure are provided with abdicating notches, and meanwhile the lower end of the sliding seat is fixedly connected with the top end of the sealing component. As a preferable scheme of the portable multifunctional permeability in-situ test probe for the surrounding rock geological structure surface, two ends of the supporting keels are fixedly connected to the connecting seat and the sliding seat respectively, meanwhile, the supporting keels are made of elastic materials, and each group of supporting keels are fixedly connected to the inner wall of the plugging bag body. As a preferable scheme of the portable multifunctional permeability in-situ test probe for the surrounding rock geological structure surface,