Vertical structural surface grouting test device and test method

Abstract

The invention provides a vertical structural surface grouting test device and test method. The test device comprises a base, a plurality of lower clamping pieces, a top base, a plurality of upper clamping pieces, a plurality of supporting vertical rods, a plurality of transverse pipes, a plurality of flexible grouting pipes and a plurality of fixing pieces. The lower structural surface test pieceis fixed to the base through a plurality of lower clamping pieces, the top base is fixedly connected with the base through a plurality of supporting vertical rods, and the upper structural surface test piece is fixed to the top base through a plurality of upper clamping pieces. Every two adjacent supporting vertical rods are connected through a transverse pipe, strip-shaped holes are formed in theside walls of the transverse pipes in a penetrating mode, multiple flexible grouting pipes are arranged in the multiple transverse pipes in a one-to-one mode, one end of each of multiple flexible grouting pipes communicates with multiple slurry guide channels in a one-to-one mode, the other end of each of multiple flexible grouting pipes penetrates through the strip-shaped holes and is located outside the transverse pipes, and multiple fixing pieces are slidably installed on the transverse pipes. The technical scheme provided by the invention has the beneficial effects that the test effect isprevented from being influenced by movement of the upper and lower structural surface test pieces during grouting, the position of the fixing piece is adjusted according to test requirements and theengineering practical situation is better met.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering test devices, in particular to a vertical structural surface grouting test device and a test method. Background technique [0002] In geotechnical engineering, structural plane is a very important structure in rock mass. It refers to a discontinuous surface with very low or no tensile strength. Different structural planes have different mechanical properties and different scales. . Studying the performance of structural planes can help to understand the properties of rock mass, and mastering the mechanical properties of rock mass is of great significance for guiding engineering practice. However, in real life, it is often not suitable to directly measure the mechanical properties of rock mass structural surfaces, and any excavation disturbance will affect the performance of rock mass structural surfaces. Therefore, it is very difficult to use in-situ tests for the study of struct...

AI Technical Summary

Problems solved by technology

Such a grouting method, on the one hand, cannot control the thickness of the structural surface, causing the structural surface to displace during the grouting process, departing from the original setting of the structural surface distance, and failing to achieve the expected structural surface grouting filling effect; on the other hand, Direct grouting often cannot be uniformly distributed on any position of the entire structural surface at the same time, and there is a time difference, which cannot ensure that the grout is evenly distributed in the structural surface, which affects the test results

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