Matching device for manufacturing and direct shear test of soft interlayer with adjustable thickness of existing original rock structural surface

Abstract

The invention provides a matching device for the manufacturing and a direct shear test of a soft interlayer with adjustable thickness of an existing original rock structural surface. The matching device comprises a bottom plate, A-type telescopic plates, scale rulers of A-type telescopic plate sliding blocks, B-type telescopic plates, and scale rulers of B-type telescopic plate sliding blocks. Thesurface of the bottom plate is square. The upper surface of the bottom plate is provided with telescopic plate positioning columns symmetrically arranged on the bottom plate. The telescopic plate positioning columns are used for fixing four telescopic plates. The bottom plate is a connecting plate of two A-type telescopic plates and two B-type telescopic plates. The two A-type telescopic plates and the two B-type telescopic plates have the same size and are symmetrically arranged on the bottom plate. According to the matching device, the problems that the soft interlayer of the existing original rock structural surface is difficult to manufacture and lay, and the thickness of the soft interlayer is difficult to adjust can be solved; and the test condition of whether the soft interlayer isextruded or not can be controlled in a direct shear test process.

Description

technical field [0001] The invention relates to the technical field of indoor direct shear test of the existing original rock structure surface with weak interlayer, in particular to the supporting device for making the weak interlayer with adjustable thickness and direct shear test of the existing original rock structure surface. Background technique [0002] Structural planes have a controlling influence on the stability of rock masses in engineering, especially weak structural planes containing weak interlayers. The weak structural plane is a weak zone with a certain thickness in the rock mass, which has the characteristics of high compression and low strength compared with the rock mass on the adjacent sides, and it usually controls the deformation and stability of the rock mass. In actual engineering projects, the existence of weak interlayers often leads to frequent accidents and serious loss of life and property. Therefore, it is particularly important to obtain the m...

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Problems solved by technology

[0005] In order to be able to meet the requirements of the direct shear test in the existing original rock structure face with weak interlayers, the present invention provides a supporting device for making weak interlayers and direct shear tests with adjustable thickness of the existing original rock structural surfaces. There are problems in making and laying the weak interlayer on the structural surface of the original rock, and it is difficult to adjust the thickness of the weak interlayer, and it is possible to control the test conditions of whether the soft interlayer is extruded during the direct shear test

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