Rock joint fissure compression ring shear seepage coupling test box

By designing the combination of annular sample installation groove and sealing ring, the problem of rock joint shear tests in the prior art is not easy to prevent seepage and small shear distance, and the simulation of rock joint mechanics and permeability characteristics under high seepage pressure is achieved.

CN112781999BActive Publication Date: 2025-05-09INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202110017348.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-01-07
Publication Date
2025-05-09
Estimated Expiration
2041-01-07

AI Technical Summary

Technical Problem

In the prior art, the rock joint shear test is not easy to prevent seepage, the shear distance is small, and the permeability water pressure can be achieved is relatively low, which makes it impossible to effectively simulate the mechanical and permeability characteristics of rock joints under high seepage water pressure.

Method used

A rock joint crack compression ring shear seepage coupling test box is designed. Through the design of the first box body and the second box body, an annular sample installation groove is formed. Combined with the use of the sealing ring and the sealing ring, the seepage sealing and shear distance are expanded.

Benefits of technology

It effectively avoids the limitations of traditional direct seepage mode, realizes that seepage sealing does not affect the shear distance, and can simulate the long-term mechanical and permeability characteristics of rock joints under high seepage water pressure, meeting the test needs under high permeability water pressure.

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Abstract

The present invention belongs to the technical field of mechanical testing, and in particular, relates to a rock joint fissure compression annular shear seepage coupling test box. The test box has a first box body and a second box body, the first box body includes a first plate body and a first cylinder body, the first cylinder body is arranged on the side of the first plate body, the outer end of the first cylinder body is provided with a first groove, the first groove is annular, the second box body includes a second plate body and a second cylinder body, the second plate body and the first plate body are arranged oppositely, the second cylinder body is arranged on the side of the second plate body facing the first plate body, the second cylinder body and the first cylinder body are butt-jointed, the outer end of the second cylinder body is provided with a second groove, the second groove is annular, and the second groove and the first groove are butt-jointed to form a sample installation groove. The present invention can solve the technical problems in the prior art that the shear test is not easy to prevent seepage, the shear distance of the shear seepage test is small, and the achievable seepage water pressure is low, resulting in the inability to effectively simulate the (long-term) mechanics and seepage characteristics of rock joints under high seepage water pressure.
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Citation Information

Patent Citations

  • Experimental apparatus for ring shearing and permeation of shearing surface of soil and soil-structure interface

    CN105606508A

  • Seepage test shear box with draw clamping ring to cut seepage test device

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  • Rock joint fracture compression ring shear-seepage coupling test box

    CN214427165U