A device and method for delineating the boundary of rock shear failure surface

Abstract

A device and method for delineating the boundary of a rock shear failure surface, comprising a support cylinder, a rotating sleeve, and a support, the support cylinder is installed on the support, the bottom of an operating platform is connected to the support, and rock samples are located on the operation platform. The middle part of the rotating sleeve is fixedly connected with a vertical rod. The vertical rod is inserted into the bearing installed in the supporting cylinder. The upper part of the supporting cylinder is equipped with a rotating bearing. One end of the oblique rod is connected to the rotating bearing, and the other end of the oblique rod is connected to the rotating sleeve. Above, a horizontal linkage rod is movably installed inside the rotating sleeve. The drawing probe body is connected to the left end of the horizontal linkage rod, and the rotating handle is sleeved on the rotating bearing of the drawing probe body. The outer barrel of the paintbrush is connected to the right end of the horizontal linkage rod, and the electronic paintbrush is inserted into the outer barrel of the paintbrush and fixed by the knob. An electronic drawing board is arranged under the electronic brush, and the electronic drawing board is connected with a computer. The invention can solve the problems of too large artificial error in calculating the rock shear surface area, difficult operation and the like, and realizes the programmatic drawing of the rock shear failure surface.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to a device and method for delineating the boundary of a rock shear failure surface. Background technique [0002] Rock mechanics test is the basis of rock mechanics and one of the important means to study rock mechanics and engineering. Although scientific calculation and theoretical analysis have reached a considerable height, rock mechanics tests still play an irreplaceable role in directly solving mechanical problems in practical engineering. With the rapid development of modern rock mechanics theory, test instruments for testing various rock mechanics parameters have emerged as the times require. Although there are many types of rock mechanics test instruments, they can meet the test requirements of various rock mechanics parameters. [0003] Among them, the direct shear test is a commonly used method for testing the shear strength of rocks and jointed surfaces. The sta...

AI Technical Summary

Problems solved by technology

Since the shear failure surface is an uneven and irregular shape, the influence of factors such as the color difference between the transparent paper and the rock sample, the fixation of the drawing paper, the drawing angle and the shooting angle of the photo, these two methods are not effective in describing the effective shear surface. There are large errors all the time, and the operation is inconvenient

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