Manufacturing mold for irregular protolith structure surface test sample meeting indoor direct shear test requirements

Abstract

The invention discloses a manufacturing mold for an irregular protolith structure surface test sample meeting indoor direct shear test requirements. The manufacturing mold comprises a lower mold disc, a middle mold disc and an upper mold disc, wherein the lower mold disc comprises a lower mold disc L-shaped side plate, a lower mold disc L-shaped side plate connecting part, a bottom plate and side plate connecting part and a bottom plate; the middle mold disc comprises a first middle mold disc connecting plate, a second middle mold disc connecting plate, a middle mold disc side plate connecting part and an upper mold disc positioning connecting part; a protolith fixing part extends into the middle mold disc; the upper mold disc comprises an upper mold disc L-shaped side plate and an upper mold disc L-shaped side plate connecting part; a lower disc filling layer is filled with the cavity filled with a rock sample, of the lower mold disc; the irregular protolith structure surface test sample is positioned in the middle mold disc; a structure surface protection layer is filled with the middle mold disc; and an upper disc filling layer is filled with the cavity filled with the rock sample, of the upper mold disc. The manufacturing mold is capable of effectively manufacturing the irregular protolith structure surface test sample meeting the indoor direct shear test requirements, and is simple and feasible, convenient to operate, low in manufacturing cost, easy to disassemble and convenient for testing and research.

Description

technical field [0001] The invention relates to a mold for making a sample of an irregular proto-rock structural surface meeting the requirements of an indoor direct shear test, which is suitable for experimental research on the shear strength characteristics of an irregular proto-rock structural surface and belongs to the technical field of engineering. Background technique [0002] The structural surface of rock mass is the fracture surface and fracture zone formed by various mechanical actions such as faults, weak layers, joints, weak schistoses and weak zones in the rock mass. Due to the difficulty, high cost, and long period of sampling the original rock structural plane, the direct shear test of the structural plane often uses the model structural plane instead of the original rock structural plane for shear strength test research. The model discontinuity plane is based on the mechanical properties and surface morphology of the original rock discontinuity plane to prod...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of difficulty in sample preparation of irregular proto-rock structural surfaces, the inability to directly carry out direct shear tests and low resource utilization, the present invention provides a method for effectively producing irregular proto-rock structural surface samples that meet the requirements of direct shear tests. It is simple, easy to operate, low in cost, easy to disassemble, and convenient for experimental research. It meets the requirements of indoor direct shear test and is a mold for making irregular original rock structural surface samples.

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