Sealing device for rock mass shear seepage test

Abstract

The invention discloses a sealing device for a rock mass shear seepage test, and relates to the technical field of rock mass engineering geomechanical tests. The seepage sealing part is arranged on the inner side of the sample clamping part and provided with upper sealing assemblies and lower sealing assemblies, an upper sample is arranged between the two upper sealing assemblies in a sealed mode, a lower sample is arranged between the two lower sealing assemblies in a sealed mode, and the upper sealing assemblies and the lower sealing assemblies located on the same side are arranged in a sealed mode; the stress loading parts are respectively arranged 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. The sealing device for the rock mass shear seepage test is good in sealing effect and meets the sealing requirement of the rock mass shear seepage test.

Description

Technical Field

[0001] The present invention relates to the technical field of rock mass engineering geological mechanics tests, and particularly to a sealing device for rock mass shear seepage tests. Background Art

[0002] A shear box is a commonly used rock mass shear test device, which is widely used to simulate the shear behavior of rock masses. Due to the limitations of test conditions, the existing seepage sealing technology of shear boxes still needs to be improved urgently. According to the technical solutions known to the inventor, during the actual test process, when the rock mass undergoes displacement or deformation, seal failure is likely to occur, which cannot adapt to the complex deformation during the rock mass shear process and cannot 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 the present invention is to provide a sealing device for rock mass shear seepage tests to solve the problems existing in the above-mentioned prior art, with good sealing effect and meeting the sealing requirements of rock mass shear seepage tests.

[0004] To achieve the above purpose, the present invention provides the following solutions: The present invention provides a sealing device for rock mass shear seepage tests, including: A specimen clamping part; A seepage sealing part, which is arranged inside the specimen clamping part and has an upper sealing assembly and a lower sealing assembly. An upper specimen is hermetically arranged between the two upper sealing assemblies, and a lower specimen is hermetically arranged between the two lower sealing assemblies. The upper sealing assembly and the lower sealing assembly on the same side are hermetically arranged, and a contact sealing method is adopted here to achieve the sealing between the upper sealing assembly and the lower sealing assembly on the same side; A stress loading part, which is respectively arranged on the top of the upper specimen and the bottom of the lower specimen and can apply stress to the upper specimen and the lower specimen.

[0005] Preferably, the specimen clamping part includes symmetrically arranged first clamping blocks and second clamping blocks. The upper parts of the first clamping blocks and the second clamping blocks are connected by a horizontally arranged first pull rod; the lower parts of the first clamping blocks and the second clamping blocks are connected by a horizontally arranged second pull rod; the seepage sealing part and the stress loading part are both located between the first clamping blocks and the second clamping blocks.

[0006] Preferably, the upper sealing assembly includes upper sealing modules symmetrically arranged on both sides of the upper specimen. An upper limit cushion block is arranged outside the upper sealing module. One end of the upper limit cushion 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 arranged on the side wall of the trapezoidal boss; a groove with an inverted trapezoidal structure is arranged on one side of the upper sealing module close to the upper limit cushion 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.

[0007] Preferably, the upper sealing module includes an upper sealing gasket and an upper sealing cushion block. One side of the upper sealing gasket is hermetically arranged with the upper specimen, and the other side is fixedly attached to the upper sealing cushion block. The groove is arranged on the side of the upper sealing cushion block away from the upper sealing gasket; the bottom of the upper sealing gasket is hermetically arranged with the top of the lower sealing assembly, and the top of the upper sealing gasket is hermetically arranged with the stress loading part located at the top of the upper specimen.

[0008] Preferably, the first clamping block is threadedly connected with a first upper limit bolt. The first upper limit bolt horizontally penetrates through the first clamping block and is fixedly connected to the upper limit cushion block close to the first clamping block; the second clamping block is threadedly connected with a second upper limit bolt. The second upper limit bolt horizontally penetrates through the second clamping block and is fixedly connected to the upper limit cushion block close to the second clamping block.

[0009] Preferably, the lower sealing assembly includes lower sealing modules symmetrically arranged on both sides of the lower specimen. A lower limit cushion block is arranged outside the lower sealing module. One end of the lower limit cushion 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 groove with an inverted trapezoidal structure is arranged on one side of the lower sealing module close to the lower limit cushion 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.

[0010] Preferably, the lower sealing module includes a lower sealing gasket and a lower sealing cushion block. One side of the lower sealing gasket is hermetically arranged with the lower specimen, and the other side is fixedly attached to the lower sealing cushion block. The groove is arranged on the side of the lower sealing cushion block away from the lower sealing gasket; the top of the lower sealing gasket is hermetically arranged with the bottom of the upper sealing assembly, and the bottom of the lower sealing gasket is hermetically arranged with the stress loading part located at the bottom of the lower specimen.

[0011] Preferably, the first clamping block is threadedly connected with a first lower limit bolt. The first lower limit bolt horizontally penetrates through the first clamping block and is fixedly connected to the lower limit cushion block close to the first clamping block; the second clamping block is threadedly connected with a second lower limit bolt. The second lower limit bolt horizontally penetrates through the second clamping block and is fixedly connected to the lower limit cushion block close to the second clamping block.

[0012] Preferably, the stress loading part includes an upper pressure head located at the top of the upper specimen. A fixed shear pull head is wrapped around the outer side of the upper pressure 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 specimen. The top of the upper sealing cushion block abuts against the bottom of the fixed shear pull head. A protrusion is provided at a position near the outer side wall of the upper specimen at the bottom of the fixed shear pull head. The protrusion is located between the upper sealing cushion block and the upper specimen. The top of the upper sealing pad is fixedly abutted against the bottom of the protrusion.

[0013] Preferably, the stress loading part includes a lower pressure head located at the bottom of the lower specimen. A lower cushion block is fixedly provided on the upper part of the outer side of the lower pressure head. The vertical projection of the inner side wall of the lower cushion block is collinear with the vertical projection of the outer side wall of the lower specimen. The bottom of the lower sealing cushion block abuts against the top of the lower cushion block. A protrusion is provided at a position near the outer side wall of the lower specimen at the top of the lower cushion block. The protrusion is located between the lower sealing cushion block and the lower specimen. The bottom of the lower sealing pad is fixedly abutted against the top of the protrusion.

[0014] The present invention has achieved the following technical effects compared with the prior art: Through the cooperative arrangement of two upper sealing components and two lower sealing components, the present invention realizes the sealing of the specimen. Since there is a seal between the upper sealing component and the lower sealing component and there is no fixed connection, when a shear stress is applied between the upper and lower specimens, the seal between the upper sealing component and the lower sealing component can always be maintained. When the specimen undergoes displacement or deformation, it is not easy to have a seal failure, and it can adapt to the complex deformation during the rock mass shear process, thus fully meeting the sealing requirements of the rock mass shear seepage test. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic cross-sectional view of the sealing device for the rock mass shear seepage test of the present invention; Figure 2 It is a schematic diagram of the upper sealing component of the present invention; Figure 3 It is a schematic diagram of the lower sealing component of the present invention; Figure 4 It is a partial enlarged schematic diagram of the upper sealing pad and the lower sealing pad of the present invention.

[0017] In the figure: 1 - First clamping block, 2 - Upper pressure head, 3 - Fixed shearing draw head, 4 - First upper sealing cushion block, 5 - First upper limit cushion block, 6 - First upper limit bolt, 7 - First upper sealing gasket, 8 - First lower limit cushion block, 9 - First lower limit bolt, 10 - First lower sealing cushion block, 11 - First lower sealing gasket, 12 - Lower cushion block, 13 - First pull rod, 14 - Second clamping block, 15 - Upper specimen, 16 - Second upper sealing gasket, 17 - Second upper sealing cushion block, 18 - Second upper limit cushion block, 19 - Second upper limit bolt, 20 - Second lower limit cushion block, 21 - Second lower limit bolt, 22 - Second lower sealing cushion block, 23 - Second lower sealing gasket, 24 - Lower specimen, 25 - Lower pressure head, 26 - Second pull rod, 27 - Roller, 28 - Protrusion. Detailed implementation manner

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] The purpose of the present invention is to provide a sealing device for rock mass shear seepage tests to solve the problems existing in the above-mentioned prior art, with good sealing effect and meeting the sealing requirements of rock mass shear seepage tests.

[0020] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0021] During the rock mass shear seepage test, since a shear force needs to be applied to the specimen, causing an offset between the upper specimen and the lower specimen, the known test devices of the inventors cannot ensure the sealing during the test. To solve this problem, the present invention provides a sealing device for rock mass shear seepage tests, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it includes a specimen clamping part, a seepage sealing part, and a stress loading part; the first clamping block 1 and the second clamping block 14 of the specimen clamping part are connected by the first pull rod 13 at the upper part and the second pull rod 26 at the lower part to control the integrity of the test device. The seepage sealing part is arranged inside the specimen clamping part, and it has an upper sealing assembly and a lower sealing assembly. An upper specimen 15 is hermetically arranged between two upper sealing assemblies, and a lower specimen 24 is hermetically arranged between two lower sealing assemblies. The upper sealing assembly and the lower sealing assembly on the same side are hermetically arranged; the stress loading parts are respectively arranged at the top of the upper specimen 15 and the bottom of the lower specimen 24, and can apply stress to the upper specimen 15 and the lower specimen 24. By applying normal prestress to the upper specimen 15, the lower specimen 24, the upper sealing assembly, and the lower sealing assembly, the upper sealing assembly and the lower sealing assembly have a good sealing effect on the specimen, and the contact ends of the upper sealing assembly and the lower sealing assembly can also ensure the sealing performance. When a shear force is applied to the specimen, it can ensure that the contact position of the upper sealing assembly and the lower sealing assembly is appropriate and has good sealing performance.

[0022] In order to ensure the sealing performance when shear force is applied, a top punch 2 is provided at the top of the upper specimen 15. The top punch 2 can apply a normal pre-tightening force to the specimen. The outside of the top punch 2 is wrapped with a fixed shear pull head 3. The vertical projection of the inner side wall of the fixed shear pull head 3 is collinear with the vertical projection of the outer side wall of the upper specimen 15, so that the fixed shear pull head 3 can apply a horizontal shear force to the upper specimen 15. When shear force is applied, in order to avoid damaging the sealing performance, the upper sealing assembly of this embodiment includes upper sealing modules symmetrically arranged on both sides of the upper specimen 15. The two upper sealing modules respectively include a first upper sealing pad 4 and a second upper sealing pad 17. A first upper limiting pad 5 is provided outside the first upper sealing pad 4. One end of the first upper limiting pad 5 is fixedly connected to the first clamp 1, and the other end is provided with a trapezoidal boss. A second upper limiting pad 18 is provided outside the second upper sealing pad 17. One end of the second upper limiting pad 18 is fixedly connected to the second clamp 14, and the other end is provided with a trapezoidal boss. A roller 27 is provided on the side wall of the trapezoidal boss; the upper sealing module of this embodiment adopts a structure combining an upper sealing gasket and an upper sealing pad. The smooth surface inside the first upper sealing gasket 7 abuts against the outer side wall of the upper specimen 15. The outer smooth surface of the first upper sealing gasket 7 is tightly connected to the smooth surface inside the first upper sealing pad 4. A groove with an inverted trapezoidal structure is provided outside the first upper sealing pad 4. The trapezoidal boss is located in the corresponding groove, and there is a gap between the end of the trapezoidal boss and the inner bottom of the groove. This enables the first upper sealing pad 4 to deform in a direction perpendicular to the side wall of the inverted trapezoid under the action of force. At this time, the first upper sealing pad 4 squeezes the first upper sealing gasket 7 on the right side, so that both the upper inner side and the lower inner side of the first upper sealing gasket 7 are tightly attached to the upper specimen 15, thus forming a good sealing performance. At the same time, since the contact between the first upper limiting pad 5 and the first upper sealing pad 4 is through the roller 27, during their relative movement, the frictional resistance is greatly reduced, ensuring the accuracy of the test results. Specifically, the first upper limiting pad 5 can horizontally squeeze the first upper sealing pad 4 inward, thereby enabling the first upper sealing gasket 7 to be tightly connected to the outer side wall of the upper specimen 15 and improving the sealing performance. Since the roller 27 abuts against the side wall of the groove, when shear force is applied, the roller 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 gasket 7 can move synchronously along the shear force direction with the upper specimen 15, and a horizontal pressure is always applied to them by the roller 27 of the first upper limiting pad 5 on the outside, ensuring that the first upper sealing gasket 7 can always apply a seal to the upper specimen 15. The working principle of the second upper sealing gasket 16 is the same as that of the first upper sealing gasket 7, so it will not be elaborated here.

[0023] In order to adjust the horizontal contact pre-tightening force applied by the gasket to the specimen, in this embodiment, a first upper limit bolt 6 is threadedly connected to the first clamping block 1. The first upper limit bolt 6 horizontally penetrates the first clamping block 1 and is fixedly connected to a first upper limit cushion block 5 close to 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 horizontally penetrates the second clamping block 14 and is fixedly connected to a second upper limit cushion block 18 close to the second clamping block 14. By screwing the first upper limit bolt 6 and the second upper limit bolt 19, a force horizontally towards the specimen can be applied to the first upper limit cushion block 5 and the second upper limit cushion block 18.

[0024] In order to improve the sealing performance between the stress loading part and the first upper gasket 7 and the second upper gasket 16, in this embodiment, the tops of the first upper sealing cushion block 4 and the second upper sealing cushion block 17 are respectively abutted against the bottom of the fixed shear pull head 3. A protrusion 28 is provided at a position on the bottom of the fixed shear pull head 3 close to the outer side wall of the upper specimen 15. A first protrusion 28 in the upper part is provided between the first upper sealing cushion block 4 and the upper specimen 15, and a second protrusion 28 in the upper part is provided between the second upper sealing cushion block 17 and the upper specimen 15. The top of the first upper gasket 7 is fixedly abutted against the bottom of the first protrusion 28 in the upper part, and the top of the second upper gasket 16 is fixedly abutted against the bottom of the second protrusion 28 in the upper part, ensuring the sealing effect here.

[0025] In a specific embodiment, a lower pressure head 25 and a lower cushion block 12 are provided at the bottom of the lower specimen 24. The lower cushion block 12 is fixedly provided on the upper part of the outer side of the lower pressure head 25. The vertical projection of the inner side wall of the lower cushion block 12 is collinear with the vertical projection of the outer side wall of the lower specimen 24. The lower sealing assembly includes lower sealing modules symmetrically arranged on both sides of the lower specimen 24. The lower sealing module includes a first lower sealing cushion block 10 and a second lower sealing cushion block 22. A first lower limit cushion block 8 is provided on the outer side of the first lower sealing cushion block 10. One end of the first lower limit cushion block 8 is fixedly connected to the first clamping block 1, and the other end is provided with a trapezoidal boss. A second lower limit cushion block 20 is provided on the outer side of the second lower sealing cushion block 22. One end of the second lower limit cushion block 20 is fixedly connected to the second clamping block 14, and the other end is provided with a trapezoidal boss. The side wall of the trapezoidal boss is smooth. The lower sealing module in this embodiment adopts a structure combining a lower gasket and a lower sealing cushion block. The smooth surface on the inner side of the first lower gasket 11 abuts against the outer side wall of the lower specimen 24. The smooth surface on the outer side of the first lower gasket 11 is tightly connected to the smooth surface on the inner side of the first lower sealing cushion block 10. A groove with an inverted trapezoidal structure is provided on the outer side of the first lower sealing cushion block 10. The trapezoidal boss is located in the corresponding groove, and there is a gap between the end of the trapezoidal boss and the inner bottom of the groove. This enables the first lower sealing cushion block 10 to deform in a direction perpendicular to the side wall of the inverted trapezoid under the action of force. At this time, the first lower sealing cushion block 10 squeezes the first lower gasket 11 on the right side, so that both the upper inner side and the lower inner side of the first lower gasket 11 are tightly attached to the lower specimen 24, thus forming a good sealing performance.

[0026] Specifically, the first lower limit spacer block 8 can horizontally and inwardly press the first lower sealing spacer block 10, thereby enabling the first lower sealing gasket 11 to be tightly connected to the outer sidewall of the lower specimen 24, improving the sealing performance. The top of the trapezoidal boss of the first lower limit spacer block 8 does not contact the bottom of the inverted trapezoidal groove of the first lower sealing spacer block 10. This causes the first lower sealing spacer block 10 to deform in a direction perpendicular to the sidewall of the inverted trapezoid under the action of force. There is no relative movement between the first lower limit spacer block 8 and the first lower sealing spacer block 10. At this time, the first lower sealing spacer block 10 presses the right first lower sealing gasket 11, making both the upper and lower parts of the first lower sealing gasket 11 closely fit the lower specimen 24, and the top of the first lower sealing gasket 11 is fixedly and sealingly abutted against the bottom of the first upper sealing gasket, thus forming a good sealing performance. The working modes of the second lower sealing gasket 23, the second lower sealing spacer block 22, and the second lower limit spacer block 20 will not be elaborated.

[0027] In order to enable the horizontal contact pre-tightening force applied by the sealing gasket to the specimen to be adjustable, 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 horizontally penetrates the first clamping block 1 and is fixedly connected to the first lower limit spacer block 8 close to 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 horizontally penetrates the second clamping block 14 and is fixedly connected to the second lower limit spacer block 20 close to the second clamping block 14. By screwing the first lower limit bolt 9 and the second lower limit bolt 21, a force horizontally towards the specimen can be applied to the first lower limit spacer block 8 and the second lower limit spacer block 20.

[0028] In order to make the sealing performance between the stress loading part and the first lower sealing gasket 11 and the second lower sealing gasket 23 better, in this embodiment, the bottoms of the first lower sealing spacer block 10 and the second lower sealing spacer block 22 are respectively abutted against the top of the lower spacer block 12. There is a protrusion 28 at the position of the top of the lower spacer block 12 close to the outer sidewall of the lower specimen 24. There is a first protrusion 28 at the lower part between the first lower sealing spacer block 10 and the lower specimen 24, and a second protrusion 28 at the lower part between the second lower sealing spacer block 22 and the lower specimen 24. The bottom of the first lower sealing gasket 11 is fixedly abutted against the top of the first protrusion 28 at the lower part, and the bottom of the second lower sealing gasket 23 is fixedly abutted against the top of the second protrusion 28 at the lower part, ensuring the sealing effect here.

[0029] Under the action of force, the first upper gasket 7 is in close contact with the left first upper gasket block 4 and the right upper specimen 15. Under the pressure of the protrusion 28 of the fixed shear pull head 3, the first upper gasket 7 contacts the first lower gasket 11 downward. At the same time, the upper end of the first upper gasket 7 is pressed by the protrusion 28 and deforms toward both sides of the protrusion 28, extending into the gap between the protrusion 28 and the first upper gasket block 4 and the gap between the protrusion 28 and the upper specimen 15, further forming a good seal. The first upper gasket 7 and the first lower gasket 11 are made of polytetrafluoroethylene, which results in a small frictional force when they move relative to each other, improving the accuracy of the test results; the principles and structures of the second upper gasket 16, the first lower gasket 11, and the second lower gasket 23 are the same as those of the first upper gasket 7, so no further description will be given.

[0030] In the present invention, specific examples are used to illustrate the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A sealing device for rock shear seepage test, characterized in that: include: Sample clamping part; A seepage sealing part is arranged inside the sample clamping part, and comprises an upper sealing component and a lower sealing component. An upper sample is sealed between the two upper sealing components, a lower sample is sealed between the two lower sealing components, and the upper sealing component is sealed with the lower sealing component located on the same side; The stress loading parts are respectively arranged 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.

2. The sealing device for rock shear seepage test according to claim 1, characterized in that: 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 pull 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 pull rod; the seepage sealing part and the stress loading part are both located between the first clamping block and the second clamping block.

3. The sealing device for rock mass shear seepage test according to claim 2, characterized in that: The upper sealing assembly includes an upper sealing module symmetrically arranged on both sides of the upper sample, an upper limit pad is provided on the outer side of the upper sealing module, one end of the upper limit pad is fixedly connected to the first clamp block or the second clamp block, and the other end is provided with a trapezoidal boss, and a roller is provided on the side wall of the trapezoidal boss; a groove of an inverted trapezoidal structure is provided on the side of the upper sealing module close to the upper limit pad, 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.

4. The sealing device for rock mass shear seepage test according to claim 3, characterized in that: The upper sealing module includes an upper sealing gasket and an upper sealing gasket block, one side of the upper sealing gasket is sealed with the upper sample, and the other side is fixedly fitted with the upper sealing gasket block, and the groove is provided on the side of the upper sealing gasket block away from the upper sealing gasket; the bottom of the upper sealing gasket is sealed with the top of the lower sealing assembly, and the top of the upper sealing gasket is sealed with the stress loading part located at the top of the upper sample.

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

6. The sealing device for rock mass shear seepage test according to claim 2, characterized in that: The lower sealing assembly includes a lower sealing module symmetrically arranged on both sides of the lower sample, a lower limit pad is provided on the outer side of the lower sealing module, one end of the lower limit pad is fixedly connected to the first clamp block or the second clamp block, and the other end is provided with a trapezoidal boss; a groove of an inverted trapezoidal structure is provided on one side of the lower sealing module close to the lower limit 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.

7. The sealing device for rock mass shear seepage test according to claim 6, characterized in that: The lower sealing module includes a lower sealing gasket and a lower sealing gasket block, one side of the lower sealing gasket is sealed with the lower sample, and the other side is fixedly fitted with the lower sealing gasket block, and the groove is provided on the side of the lower sealing gasket block away from the lower sealing gasket; the top of the lower sealing gasket is sealed with the bottom of the upper sealing assembly, and the bottom of the lower sealing gasket is sealed with the stress loading part located at the bottom of the lower sample.

8. The sealing device for rock mass shear seepage test according to claim 6, characterized in that: The first clamping block is threadedly connected with a first lower limit bolt, which horizontally penetrates the first clamping block and is fixedly connected to the lower limit pad block close to the first clamping block; the second clamping block is threadedly connected with a second lower limit bolt, which horizontally penetrates the second clamping block and is fixedly connected to the lower limit pad block close to the second clamping block.

9. The sealing device for rock mass shear seepage test according to claim 4, characterized in that: The stress loading part includes an upper pressure head located at the top of the upper sample, a fixed shear pull head wrapped on the outside of the upper pressure head, a vertical projection of the inner wall of the fixed shear pull head and a vertical projection of the outer wall of the upper sample are collinear, the top of the upper sealing gasket block 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 wall of the upper sample, the protrusion is located between the upper sealing gasket block and the upper sample, and the top of the upper sealing gasket is fixedly abutted against the bottom of the protrusion.

10. The sealing device for rock mass shear seepage test according to claim 7, characterized in that: The stress loading part includes a lower pressure head located at the bottom of the lower sample, a lower pad is fixedly provided on the upper outer side of the lower pressure head, a vertical projection of the inner wall of the lower pad is collinear with the vertical projection of the outer wall of the lower sample, the bottom of the lower sealing pad abuts against the top of the lower pad, a protrusion is provided on the top of the lower pad near the outer wall of the lower sample, the protrusion is located between the lower sealing pad 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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