A sealing device for rock mass shear seepage tests

Abstract

This invention discloses a sealing device for rock mass shear seepage tests, relating to the field of rock mass engineering geomechanical testing technology. It includes a sample clamping part; a seepage sealing part is disposed inside the sample clamping part, having an upper sealing assembly and a lower sealing assembly. An upper sample is sealed between the two upper sealing assemblies, and a lower sample is sealed between the two lower sealing assemblies. The upper sealing assembly and the lower sealing assembly located on the same side are sealed together. Stress loading parts are respectively disposed at the top of the upper sample and the bottom of the lower sample, capable of applying stress to the upper and lower samples. The sealing device for rock mass shear seepage tests provided by this invention has good sealing effect and meets the sealing requirements of rock mass shear seepage tests.

Description

Technical Field

[0001] This invention relates to the field of rock mass engineering geomechanical testing technology, and in particular to a sealing device for rock mass shear seepage testing. Background Technology

[0002] Shear boxes are commonly used rock mass shear testing devices, widely applied to simulate rock mass shear behavior. However, due to limitations in testing conditions, the existing seepage sealing technology for shear boxes still needs improvement. The known technical solutions developed by the inventors are prone to sealing failure during actual testing when the rock mass shifts or deforms, failing to adapt to the complex deformations encountered during rock mass shearing and thus unable to fully meet the sealing requirements of rock mass shear seepage tests. Therefore, there is an urgent need to develop a sealing device for rock mass shear seepage tests. Summary of the Invention

[0003] The purpose of this invention is to provide a sealing device for rock mass shear seepage tests, which solves the problems existing in the prior art, provides a good sealing effect, and meets the sealing requirements of rock mass shear seepage tests.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] This invention provides a sealing device for rock mass shear seepage tests, comprising:

[0006] Sample clamping part;

[0007] A seepage sealing part is provided inside the sample clamping part. It has an upper sealing assembly and a lower sealing assembly. An upper sample is sealed between the two upper sealing assemblies and a lower sample is sealed between the two lower sealing assemblies. The upper sealing assembly and the lower sealing assembly located on the same side are sealed together. Here, a contact sealing method is used to achieve the sealing between the upper sealing assembly and the lower sealing assembly located on the same side.

[0008] The stress loading section is respectively provided at the top of the upper sample and the bottom of the lower sample, and can apply stress to the upper sample and the lower sample.

[0009] Preferably, the sample clamping part includes a first clamping block and a second clamping block arranged symmetrically, the upper part of the first clamping block and the upper part of the second clamping block are connected by a horizontally arranged first tie rod; the lower part of the first clamping block and the lower part of the second clamping block are connected by a horizontally arranged second tie rod; the seepage sealing part and the stress loading part are both located between the first clamping block and the second clamping block.

[0010] Preferably, the upper sealing assembly includes upper sealing modules symmetrically arranged on both sides of the upper sample. An upper sealing block is provided on the outer side of the upper sealing module. One end of the upper sealing block is fixedly connected to the first clamping block or the second clamping block, and the other end is provided with a trapezoidal boss. A roller is provided on the side wall of the trapezoidal boss. The upper sealing module is provided with an inverted trapezoidal groove on the side near the upper sealing block. The trapezoidal boss is located in the groove. There is a gap between the end of the trapezoidal boss and the inner bottom of the groove, and the roller abuts against the side wall of the groove.

[0011] Preferably, the upper sealing module includes an upper sealing gasket and an upper sealing gasket block. One side of the upper sealing gasket is sealed to the upper sample, and the other side is fixedly attached to the upper sealing gasket block. The upper sealing gasket block has the groove on the side away from the upper sealing gasket. The bottom of the upper sealing gasket is sealed to the top of the lower sealing assembly, and the top of the upper sealing gasket is sealed to the stress loading part located on the top of the upper sample.

[0012] Preferably, the first clamping block is threadedly connected to a first upper limit bolt, which horizontally passes through the first clamping block and is fixedly connected to an upper limit pad near the first clamping block; the second clamping block is threadedly connected to a second upper limit bolt, which horizontally passes through the second clamping block and is fixedly connected to an upper limit pad near the second clamping block.

[0013] Preferably, the lower sealing assembly includes lower sealing modules symmetrically arranged on both sides of the lower sample. A lower limiting pad is provided on the outer side of the lower sealing module. One end of the lower limiting pad is fixedly connected to a first clamping block or a second clamping block, and the other end is provided with a trapezoidal boss. The lower sealing module is provided with an inverted trapezoidal groove on the side near the lower limiting pad. The trapezoidal boss is located in the groove, and there is a gap between the end of the trapezoidal boss and the inner bottom of the groove.

[0014] Preferably, the lower sealing module includes a lower sealing gasket and a lower sealing gasket block. One side of the lower sealing gasket is sealed to the lower sample, and the other side is fixedly attached to the lower sealing gasket block. The lower sealing gasket block has the groove on the side away from the lower sealing gasket. The top of the lower sealing gasket is sealed to the bottom of the upper sealing assembly, and the bottom of the lower sealing gasket is sealed to the stress loading part located at the bottom of the lower sample.

[0015] Preferably, the first clamping block is threadedly connected to a first lower limit bolt, which horizontally passes through the first clamping block and is fixedly connected to a lower limit pad near the first clamping block; the second clamping block is threadedly connected to a second lower limit bolt, which horizontally passes through the second clamping block and is fixedly connected to a lower limit pad near the second clamping block.

[0016] Preferably, the stress loading part includes an upper pressure head located at the top of the upper sample, and a fixed shear pull head is wrapped around the outside of the upper pressure head. The vertical projection of the inner sidewall of the fixed shear pull head is collinear with the vertical projection of the outer sidewall of the upper sample. The top of the upper sealing gasket abuts against the bottom of the fixed shear pull head. A protrusion is provided at the bottom of the fixed shear pull head near the outer sidewall of the upper sample. The protrusion is located between the upper sealing gasket and the upper sample. The top of the upper sealing gasket is fixedly abutted against the bottom of the protrusion.

[0017] Preferably, the stress loading part includes a lower pressure head located at the bottom of the lower sample, a lower pad block is fixedly provided on the upper outer side of the lower pressure head, the vertical projection of the inner sidewall of the lower pad block is collinear with the vertical projection of the outer sidewall of the lower sample, the bottom of the lower sealing pad block abuts against the top of the lower pad block, a protrusion is provided on the top of the lower pad block near the outer sidewall of the lower sample, the protrusion is located between the lower sealing pad block and the lower sample, and the bottom of the lower sealing pad block is fixedly abutting against the top of the protrusion.

[0018] The present invention achieves the following technical effects compared to the prior art:

[0019] This invention achieves the sealing of the sample by using two upper sealing components and two lower sealing components in combination. Since the upper and lower sealing components are sealed but not fixedly connected, they can always maintain a seal when shear stress is applied between the upper and lower samples. When the sample is displaced or deformed, the seal is not prone to failure. It can adapt to the complex deformation during the rock mass shearing process and thus fully meet the sealing requirements of the rock mass shear seepage test. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic cross-sectional view of the sealing device used in rock mass shear seepage tests according to the present invention.

[0022] Figure 2 This is a schematic diagram of the sealing assembly of the present invention;

[0023] Figure 3 This is a schematic diagram of the lower sealing assembly of the present invention;

[0024] Figure 4 This is a partially enlarged schematic diagram of the upper and lower sealing gaskets of the present invention.

[0025] In the diagram: 1-First clamping block, 2-Upper pressure head, 3-Fixed shearing pull head, 4-First upper sealing gasket, 5-First upper limit gasket, 6-First upper limit bolt, 7-First upper sealing gasket, 8-First lower limit gasket, 9-First lower limit bolt, 10-First lower sealing gasket, 11-First lower sealing gasket, 12-Lower gasket, 13-First pull rod, 14-Second clamping block, 15-Upper sample, 16-Second upper sealing gasket, 17-Second upper sealing gasket, 18-Second upper limit gasket, 19-Second upper limit bolt, 20-Second lower limit gasket, 21-Second lower limit bolt, 22-Second lower sealing gasket, 23-Second lower sealing gasket, 24-Lower sample, 25-Lower pressure head, 26-Second pull rod, 27-Roller, 28-Protrusion. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] The purpose of this invention is to provide a sealing device for rock mass shear seepage tests, which solves the problems existing in the prior art, provides a good sealing effect, and meets the sealing requirements of rock mass shear seepage tests.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] During rock mass shear seepage tests, shear force is applied to the specimens, causing misalignment between the upper and lower specimens. Therefore, the known testing apparatus cannot ensure a tight seal during the test. To address this problem, this invention provides a sealing device for rock mass shear seepage tests. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the device includes a sample clamping section, a seepage sealing section, and a stress loading section. The first clamping block 1 and the second clamping block 14 of the sample clamping section are connected by an upper first pull rod 13 and a lower second pull rod 26 to control the overall integrity of the testing device. The seepage sealing section is located inside the sample clamping section and has an upper sealing assembly and a lower sealing assembly. An upper sample 15 is sealed between the two upper sealing assemblies, and a lower sample 24 is sealed between the two lower sealing assemblies. The upper sealing assembly is sealed to the lower sealing assembly located on the same side. The stress loading section is located at the top of the upper sample 15 and the bottom of the lower sample 24, respectively, and can apply stress to the upper sample 15 and the lower sample 24. By applying normal prestress to the upper sample 15, the lower sample 24, and the upper and lower sealing assemblies, the upper and lower sealing assemblies can achieve a good sealing effect on the sample, and the contact ends of the upper and lower sealing assemblies can also ensure sealing. When shear force is applied to the sample, the contact position of the upper and lower sealing assemblies can be ensured to have good sealing performance.

[0030] To ensure sealing performance even under shear force, an upper pressure head 2 is provided on the top of the upper sample 15. The upper pressure head 2 can apply a normal pre-tightening force to the sample. A fixed shear pull head 3 is wrapped around the outside of the upper pressure head 2. The vertical projection of the inner sidewall of the fixed shear pull head 3 is collinear with the vertical projection of the outer sidewall of the upper sample 15, so that the fixed shear pull head 3 can apply a horizontal shear force to the upper sample 15. When shear force is applied, in order to avoid damaging the seal, the upper sealing assembly in this embodiment includes upper sealing modules symmetrically arranged on both sides of the upper sample 15. The two upper sealing modules include a first upper sealing pad 4 and a second upper sealing pad 17, respectively. A first upper sealing pad 5 is provided on the outside of the first upper sealing pad 4. One end of the first upper sealing pad 5 is fixedly connected to the first clamping block 1, and the other end is provided with a trapezoidal boss. A second upper sealing pad 17 is provided on the outside of the second upper sealing pad 17. 8. One end of the second upper limit pad 18 is fixedly connected to the second clamping block 14, and the other end is provided with a trapezoidal boss. Rollers 27 are provided on the side wall of the trapezoidal boss. The upper sealing module of this embodiment adopts a structure in which the upper sealing gasket and the upper sealing pad block cooperate. The smooth surface of the inner side of the first upper sealing gasket 7 abuts against the outer side wall of the upper sample 15. The smooth surface of the outer side of the first upper sealing gasket 7 is tightly connected to the smooth surface of the inner side of the first upper sealing pad block 4. The outer side of the first upper sealing pad block 4 is provided with an inverted trapezoidal groove. The trapezoidal boss is located in the corresponding groove. There is a gap between the end of the trapezoidal boss and the inner bottom of the groove. This makes the first upper sealing pad block 4 deform in a direction perpendicular to the inverted trapezoidal side wall under the action of force. At this time, the first upper sealing pad block 4 squeezes the right side of the first upper sealing gasket 7, so that the upper inner side and the lower inner side of the first upper sealing gasket 7 are tightly fitted with the upper sample 15, thereby forming a good seal. Meanwhile, since the first upper limit pad 5 and the first upper sealing pad 4 are in contact via rollers 27, the frictional resistance is greatly reduced during their relative movement, ensuring the accuracy of the test results. Specifically, the first upper limit pad 5 can horizontally press the first upper sealing pad 4 inward, thereby making the first upper sealing pad 7 tightly connected to the outer wall of the upper sample 15, improving the sealing performance. Since the rollers 27 abut against the side wall of the groove, when shear force is applied, the rollers 27 and the side wall of the groove can roll relative to each other. That is, the first upper sealing pad 4 and the first upper sealing pad 7 can move synchronously with the upper sample 15 in the direction of shear force, and their outer sides are always subjected to horizontal pressure by the rollers 27 of the first upper limit pad 5, ensuring that the first upper sealing pad 7 can always seal the upper sample 15. The working principle of the second upper sealing pad 16 is the same as that of the first upper sealing pad 7, so it will not be described in detail.

[0031] In order to adjust the horizontal contact preload applied by the sealing gasket to the sample, in this embodiment, a first upper limit bolt 6 is threadedly connected to the first clamping block 1. The first upper limit bolt 6 passes horizontally through the first clamping block 1 and is fixedly connected to the first upper limit pad 5 near the first clamping block 1. A second upper limit bolt 19 is threadedly connected to the second clamping block 14. The second upper limit bolt 19 passes horizontally through the second clamping block 14 and is fixedly connected to the second upper limit pad 18 near the second clamping block 14. By tightening the first upper limit bolt 6 and the second upper limit bolt 19, a horizontal force towards the sample can be applied to the first upper limit pad 5 and the second upper limit pad 18.

[0032] To improve the sealing between the stress-loaded part and the first upper sealing gasket 7 and the second upper sealing gasket 16, in this embodiment, the tops of the first upper sealing gasket 4 and the second upper sealing gasket 17 respectively abut against the bottom of the fixed shearing head 3. The bottom of the fixed shearing head 3 is provided with a protrusion 28 near the outer wall of the upper sample 15. The first upper sealing gasket 4 and the upper sample 15 are provided with an upper first protrusion 28, and the second upper sealing gasket 17 and the upper sample 15 are provided with an upper second protrusion 28. The top of the first upper sealing gasket 7 is fixedly abutted against the bottom of the upper first protrusion 28, and the top of the second upper sealing gasket 16 is fixedly abutted against the bottom of the upper second protrusion 28, thus ensuring the sealing effect at this point.

[0033] In one specific embodiment, the bottom of the lower sample 24 is provided with a lower pressure head 25 and a lower pad 12. The lower pad 12 is fixedly provided on the upper outer side of the lower pressure head 25. The vertical projection of the inner sidewall of the lower pad 12 is collinear with the vertical projection of the outer sidewall of the lower sample 24. The lower sealing assembly includes lower sealing modules symmetrically arranged on both sides of the lower sample 24. The lower sealing module includes a first lower sealing pad 10 and a second lower sealing pad 22. A first lower limiting pad 8 is provided on the outer side of the first lower sealing pad 10. One end of the first lower limiting pad 8 is fixedly connected to the first clamping block 1, and the other end is provided with a trapezoidal boss. A second lower limiting pad 20 is provided on the outer side of the second lower sealing pad 22. One end of the second lower limiting pad 20 is fixedly connected to the second clamping block 14, and the other end is provided with a trapezoidal boss. The sidewalls are smooth. In this embodiment, the lower sealing module adopts a structure in which the lower sealing gasket and the lower sealing block cooperate. The smooth surface of the inner side of the first lower sealing gasket 11 abuts against the outer side wall of the lower sample 24. The smooth surface of the outer side of the first lower sealing gasket 11 is tightly connected to the smooth surface of the inner side of the first lower sealing block 10. The outer side of the first lower sealing block 10 is provided with an inverted trapezoidal groove. The trapezoidal boss is located in the corresponding groove. There is a gap between the end of the trapezoidal boss and the inner bottom of the groove. This allows the first lower sealing block 10 to deform in a direction perpendicular to the inverted trapezoidal sidewall under the action of force. At this time, the first lower sealing block 10 squeezes the right side of the first lower sealing gasket 11, so that the upper inner side and the lower inner side of the first lower sealing gasket 11 are tightly fitted with the lower sample 24, thereby forming a good seal.

[0034] Specifically, the first lower limiting pad 8 can horizontally press the first lower sealing pad 10 inward, thereby making the first lower sealing pad 11 tightly connected to the outer wall of the lower sample 24, improving the sealing performance. The top of the trapezoidal protrusion of the first lower limiting pad 8 does not contact the bottom of the inverted trapezoidal groove of the first lower sealing pad 10, which causes the first lower sealing pad 10 to deform in a direction perpendicular to the inverted trapezoidal sidewall under the action of force. There is no relative movement between the first lower limiting pad 8 and the first lower sealing pad 10. At this time, the first lower sealing pad 10 presses the right side of the first lower sealing pad 11, so that the upper and lower parts of the first lower sealing pad 11 are tightly fitted to the lower sample 24, and the top of the first lower sealing pad 11 is fixedly sealed to the bottom of the first upper sealing pad, thereby forming a good seal. The working methods of the second lower sealing pad 23, the second lower sealing pad 22, and the second lower limiting pad 20 are not described in detail.

[0035] In order to adjust the horizontal contact preload applied by the sealing gasket to the sample, in this embodiment, a first lower limit bolt 9 is threadedly connected to the lower part of the first clamping block 1. The first lower limit bolt 9 passes horizontally through the first clamping block 1 and is fixedly connected to the first lower limit pad 8 near the first clamping block 1. A second lower limit bolt 21 is threadedly connected to the second clamping block 14. The second lower limit bolt 21 passes horizontally through the second clamping block 14 and is fixedly connected to the second lower limit pad 20 near the second clamping block 14. By tightening the first lower limit bolt 9 and the second lower limit bolt 21, a horizontal force towards the sample can be applied to the first lower limit pad 8 and the second lower limit pad 20.

[0036] To improve the sealing performance between the stress-loaded part and the first lower sealing gasket 11 and the second lower sealing gasket 23, this embodiment has the bottoms of the first lower sealing gasket 10 and the second lower sealing gasket 22 respectively abutting against the top of the lower gasket 12. The top of the lower gasket 12 is provided with a protrusion 28 near the outer wall of the lower sample 24. The first lower sealing gasket 10 and the lower sample 24 are provided with a lower first protrusion 28, and the second lower sealing gasket 22 and the lower sample 24 are provided with a lower second protrusion 28. The bottom of the first lower sealing gasket 11 is fixedly abutting against the top of the lower first protrusion 28, and the bottom of the second lower sealing gasket 23 is fixedly abutting against the top of the lower second protrusion 28, thus ensuring the sealing effect at this point.

[0037] Under the action of force, the first upper sealing gasket 7 is in close contact with the left first upper sealing gasket block 4 and the right upper sample 15. Under the pressure of the protrusion 28 of the fixed shear pull head 3, the first upper sealing gasket 7 is pressed downward and in close contact with the first lower sealing gasket 11. At the same time, the upper end of the first upper sealing gasket 7 is pressed by the protrusion 28 and deformed to both sides of the protrusion 28, extending into the gap between the protrusion 28 and the first upper sealing gasket block 4 and the gap between the protrusion 28 and the upper sample 15, further forming a good seal. The first upper sealing gasket 7 and the first lower sealing gasket 11 are made of polytetrafluoroethylene, which results in less friction when they move relative to each other, improving the accuracy of the test results. The principle and structure of the second upper sealing gasket 16, the first lower sealing gasket 11 and the second lower sealing gasket 23 are the same as those of the first upper sealing gasket 7, so they will not be described in detail.

[0038] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A sealing device for rock mass shear seepage flow test, characterized in that: The utility model relates to a kind of test sample clamping device, including: Test sample clamping part; Permeable sealing part, which is arranged inside the test sample clamping part, has upper sealing assembly and lower sealing assembly, upper test sample is sealingly arranged between two upper sealing assemblies, lower test sample is sealingly arranged between two lower sealing assemblies, and the upper sealing assembly is sealingly arranged between the lower sealing assembly located on the same side; Stress loading part, which is respectively arranged at the top of the upper test sample and the bottom of the lower test sample, can apply stress to the upper test sample and the lower test sample; The test sample clamping part includes symmetrically arranged first clamping block and second clamping block, the upper part of the first clamping block and the upper part of the second clamping block are connected by the horizontally arranged first pull rod, the lower part of the first clamping block and the lower part of the second clamping block are connected by the horizontally arranged second pull rod, and the permeable sealing part and the stress loading part are located between the first clamping block and the second clamping block; The upper sealing assembly includes upper sealing module symmetrically arranged on both sides of the upper test sample, upper limiting pad block is arranged outside the upper sealing module, one end of the upper limiting pad block is fixedly connected with the first clamping block or the second clamping block, the other end of the upper limiting pad block is provided with a trapezoidal boss, and a roller is arranged on the side wall of the trapezoidal boss; The upper sealing module includes upper sealing pad and upper sealing pad block, one side of the upper sealing pad is sealingly arranged with the upper test sample, the other side of the upper sealing pad is fixedly attached with the upper sealing pad block, and the side of the upper sealing pad block away from the upper sealing pad is provided with the groove; The bottom of the upper sealing pad is sealingly arranged with the top of the lower sealing assembly, and the top of the upper sealing pad is sealingly arranged with the stress loading part located at the top of the upper test sample; The stress loading part includes upper pressure head located at the top of the upper test sample, the outer side of the upper pressure head is wrapped with fixed shear pull head, the vertical projection of the inner side wall of the fixed shear pull head is collinear with the vertical projection of the outer side wall of the upper test sample, the top of the upper sealing pad block is in abutment with the bottom of the fixed shear pull head, the bottom of the fixed shear pull head is provided with a protrusion close to the position of the outer side wall of the upper test sample, the protrusion is located between the upper sealing pad block and the upper test sample, and the top of the upper sealing pad is fixedly in abutment with the bottom of the protrusion; The upper end of the first upper sealing pad is compressed by the protrusion, deformed towards both sides of the protrusion, and extended into the gap between the protrusion and the first upper sealing pad block and the gap between the protrusion and the upper test sample; The first upper sealing pad block and the first upper sealing pad can move along the direction of shear force synchronously with the upper test sample, and the outer sides of the first upper sealing pad block and the first upper sealing pad are always subjected to horizontal pressure applied by the roller of the first upper limiting pad block, so as to ensure that the first upper sealing pad can always apply sealing to the upper test sample. The lower sealing assembly comprises lower sealing modules symmetrically arranged on both sides of the lower sample, lower limiting pads are arranged outside the lower sealing modules, one end of the lower limiting pad is fixedly connected with the first clamping block or the second clamping block, and the other end is provided with a trapezoidal boss; the side of the lower sealing module close to the lower limiting pad is provided with a groove in an inverted trapezoidal structure, the trapezoidal boss is located in the groove, and a gap is formed between the end of the trapezoidal boss and the inner bottom of the groove; The lower sealing module comprises a lower sealing pad and a lower sealing pad block, one side of the lower sealing pad is sealingly arranged with the lower sample, the other side is fixedly attached with the lower sealing pad block, and the side of the lower sealing pad block away from the lower sealing pad is provided with the groove; the top of the lower sealing pad is sealingly arranged with the bottom of the upper sealing assembly, and the bottom of the lower sealing pad is sealingly arranged with the stress loading part located at the bottom of the lower sample.

2. The sealing device for rock mass shear seepage flow test according to claim 1, characterized in that: The first clamping block is threadedly connected with a first upper limiting bolt, the first upper limiting bolt penetrates through the first clamping block horizontally and is fixedly connected with the upper limiting pad close to the first clamping block; the second clamping block is threadedly connected with a second upper limiting bolt, the second upper limiting bolt penetrates through the second clamping block horizontally and is fixedly connected with the upper limiting pad close to the second clamping block.

3. The sealing device for rock mass shear seepage flow test according to claim 1, characterized in that: The first clamping block is threadedly connected with a first lower limiting bolt, the first lower limiting bolt penetrates through the first clamping block horizontally and is fixedly connected with the lower limiting pad close to the first clamping block; the second clamping block is threadedly connected with a second lower limiting bolt, the second lower limiting bolt penetrates through the second clamping block horizontally and is fixedly connected with the lower limiting pad close to the second clamping block.

4. The sealing device for rock mass shear seepage flow test according to claim 1, characterized in that: The stress loading part comprises a lower pressing head located at the bottom of the lower sample, a lower pad is fixedly arranged on the outer side of the upper part of the lower pressing head, the vertical projection of the inner side wall of the lower pad is collinear with the vertical projection of the outer side wall of the lower sample, the bottom of the lower sealing pad block abuts against the top of the lower pad, the top of the lower pad is provided with a protrusion close to the position of the outer side wall of the lower sample, the protrusion is located between the lower sealing pad block and the lower sample, and the bottom of the lower sealing pad is fixedly abutted against the top of the protrusion.

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