A method for making weak interlayers with adjustable thickness of existing original rock structural planes

Abstract

A method for making a weak interlayer with an adjustable thickness of an existing original rock structural surface, comprising the following steps: (1) field sampling; (2) bottom plate placement; (3) installation of four expansion plates; (4) original rock structure (5) Determination of the thickness of the weak interlayer; (6) Fixation of the sliders of the expansion plates in the four expansion plates; (7) Record the position of the sliders of the expansion plates in the expansion plates on the surface of the lower plate structure. (8) filling the weak interlayer material; (8) recording the scale position on the upper surface of the weak interlayer after filling; (10) judging whether the thickness of the filling weak interlayer is consistent with the field thickness, step (9) and step ( 7) is the thickness of the filled weak interlayer. The invention can solve the problems of difficulty in fabricating and laying the weak interlayer of the original rock structural surface, and difficulty in adjusting the thickness of the weak interlayer, and can control the test conditions of whether the soft interlayer is extruded during the direct shear test.

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 a method for making the existing original rock structure surface with adjustable thickness weak interlayer. 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 mechanical properties of structural surface...

AI Technical Summary

Problems solved by technology

[0005] In order to be able to meet the requirements of the direct shear test in the chamber of the existing original rock structural surface containing weak interlayers, the present invention provides a method for making weak interlayers with adjustable thickness of the existing original rock structural surfaces, which can solve the problem of the existing original rock structural surfaces It is difficult to make and lay the weak interlayer, and the thickness of the weak interlayer is difficult to adjust, 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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