Rock shear strength tester

Abstract

The invention discloses a rock shear strength tester which comprises a longitudinal pressure device and a horizontal pressure device. Two vertically symmetrical rock fixing boxes are arranged below the longitudinal pressure device, the horizontal pressure device corresponds to the side surface of the upper rock fixing box, and the rock fixing box is a square box with openings at the opposite innersides. A limiting plate is arranged in the middle in each rock fixing box, a plurality of square supporting columns longitudinally penetrate through the limiting plate and are arranged on the limiting plate in a matrix mode, longitudinal threaded holes are formed in the square supporting columns and are in threaded connection with the threaded columns at one end, and one end of each threaded column extends out of the bottom of the rock fixing box and then is rotationally connected with the bottom of the rock fixing box. The rock shear strength tester has the characteristics that the structureis simple, the cost is low, the rock is firmly fixed, an experiment is not easy to fail, and the experimental results are more accurate.

Description

technical field [0001] The invention relates to a rock shear strength tester, in particular to a rock shear strength tester. Background technique [0002] The Rock Shear Strength Tester is a test instrument for measuring the rock shear strength. It mainly includes two upper and lower rock fixing devices. The lower rock fixing device is fixed on the operating platform. After the rock is installed in place, the upper rock fixing device A fixed vertical pressure is applied to the top of the device, and a lateral thrust is applied to the side, and the relationship between the lateral thrust and the slip of the rock structural plane is observed. [0003] The main problem existing in the current rock shear strength tester is: although the professional equipment has high measurement accuracy, its structure is complicated and the cost is high, which is unnecessary for some experiments requiring non-precision measurement; while some existing self-made The operation of the experiment...

AI Technical Summary

Problems solved by technology

[0003] The main problem existing in the current rock shear strength tester is: although the professional equipment has high measurement accuracy, its structure is complicated and the cost is high, which is unnecessary for some experiments requiring non-precision measurement; while some existing self-made The operation of the experimental equipment is troublesome, and the most important thing is that the appearance of the rock sample is strange, and the fixation of the rock sample is very difficult. During the experiment, problems such as falling, flipping and offset are prone to occur, resulting in the failure of the experiment.

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