Preparation method of irregular proto-rock structural surface sample meeting the requirements of indoor direct shear test
A production method and technology with test requirements, applied in the field of engineering, can solve the problems of inability to directly carry out direct shear test, low resource utilization rate, difficulty in sample preparation of irregular original rock structure surface, etc., achieving simple and easy production method and convenient operation. , the effect of easy disassembly
Active Publication Date: 2019-06-28
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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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. And it is simple, easy to operate, low in cost, easy to disassemble, and convenient for experimental research. The method of making the sample of the irregular original rock structure surface that meets the requirements of the indoor direct shear test
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[0040] The present invention will be further described below in conjunction with the accompanying drawings.
[0041] refer to Figure 1 to Figure 12 , a method for making an irregular shape original rock structure surface that meets the test requirements, the method comprising the following steps:
[0042] 1) Select the mold size. According to the requirements of the indoor direct shear test and the shape and size of the sample of the irregular original rock structure obtained on site, the corresponding size of the mold is selected.
[0043] 2) Assemble the lower plate 3 of the mold. First, connect the two L-shaped side plates 31 through the mold lower plate L-shaped side plate connecting piece 32 , and then connect the connected side plates to the mold bottom plate 34 through the mold lower plate bottom plate and the side plate connecting piece 33 .
[0044] 3) Assemble the middle plate 4 of the mold. First, the connecting plate 41 of the middle plate of the mold and the ...
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A manufacturing method for an irregular-shaped primary rock structural surface satisfying requirements in a test includes the following steps: 1) selection of mould size: according to the requirements in the indoor direct shear test and the shape and size of an irregular primary rock structural surface test piece, which is obtained on site, selecting a mould in corresponding size; 2) assembling a lower plate, a middle plate and an upper plate of the mould, and fixing the irregular primary rock test piece, pouring a rock lower plate packing layer into the lower plate of the mould, forming a structural surface protective layer in the middle plate of the mould and pouring a rock upper plate packing layer into the upper plate of the mould; 3) detachment of the mould: when the poured test piece is shaped completely, successively detaching the upper plate, the middle plate and the lower plate of the mould; 4) maintenance of the test piece: placing the detached test piece in a constant-temperature and constant-humidity maintenance room to maintain the test piece until maintenance age, and performing sampling and performing the indoor direct shear test. The method can effectively produce the irregular primary rock structural surface test piece which satisfies the demands of direct shear test, is easy to carry out and convenient to operate and is low in cost. The test piece is easy to detach and is convenient to test and research.
Description
technical field [0001] The invention relates to a method for preparing a sample of an irregular original rock structure surface that meets the requirements of an indoor direct shear test, is suitable for experimental research on the shear strength characteristics of an irregular original rock structure surface, and belongs to the technical field of engineering. Background technique [0002] The rock mass structural plane is the fracture surface and fracture zone formed by various mechanical actions such as faults, weak planes, joints, weak schistoses and weak zones in the rock mass. Due to the difficulty of sampling the original rock structure plane, the high cost and the long period, the direct shear test of the structure plane often uses the model structure plane instead of the original rock structure plane for the shear strength test research. The model structural plane is based on the mechanical properties and surface morphology of the original rock structural plane to m...
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IPC IPC(8): G01N1/28
CPCG01N1/28
Inventor 罗战友邹宝平陶燕丽吴李泉李超李棋祝行莫林飞熊志强陈超郑耀
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY