Visual measuring device for rock mechanics experiment

Abstract

The invention discloses a visual measuring device for a rock mechanics experiment, which comprises a confining pressure cavity, wherein the confining pressure cavity comprises a horizontal bottom plate, a transparent enclosure and a sealing gasket, an upper pressure head is arranged in the middle of the upper end of the transparent enclosure, and a lower pressure head is arranged in the middle of the lower end of the horizontal bottom plate. The visual measuring device for the rock mechanics experiment further comprises a transparent heat shrink tube sleeved outside a rock test piece and an acoustic emission sensor sleeve used for collecting rock fracture signals, and the acoustic emission sensor sleeve comprises an elastic transparent protective sleeve and an annular acoustic emission probe. The rock compression fracture process in the test can be macroscopically observed through an industrial camera, and the defect that the rock fracture process in an existing rock triaxial compression test is invisible is overcome. Moreover, tiny fracture signals in the circumferential direction and the circumferential range of the rock test piece can be more comprehensively collected through the acoustic emission sensor sleeve, and the fracture position can be more accurately positioned, so that the damage characteristics of microscopic fractures in the rock can be more accurately monitored.

Description

technical field [0001] The invention relates to the technical field of rock experiment equipment, in particular to a visualized rock mechanics experiment device. Background technique [0002] The triaxial compressive strength of rock is one of the physical and mechanical properties of rock, which refers to the maximum axial stress that a rock specimen can resist under the action of triaxial compressive stress. Rock mechanics problems encountered in mine engineering, such as slope stability, stope pillar bearing capacity and its stress-strain state, roadway stability, and stress state of stope goaf, are all two-way or three-way stress problems. Therefore, theoretically studying the three-dimensional stress of rock has practical significance for solving practical problems in mine engineering. [0003] In the prior art, when the rock triaxial stress testing machine measures the triaxial compression strength of the rock, the specimen is located in the steel confining pressure c...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a rock mechanics experiment visualization measurement device to solve the problem that the existing rock triaxial compression strength test device cannot visually observe the rock compression failure process, and cannot damage the rock within the entire length of the test piece. Technical Problems of Effective Monitoring of Tiny Signals

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