Visual measuring device for rock mechanics experiment
A measuring device and technology of rock mechanics, applied in measuring devices, applying stable tension/pressure to test the strength of materials, scientific instruments, etc., can solve the problems of inability to effectively monitor rock damage micro-signals and inability to visually observe rock compression failure process, etc. , to achieve the effect of accurate positioning and accurate monitoring
Pending Publication Date: 2021-11-05
CHONGQING UNIV
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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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[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0015] As shown in the figure, the visual measurement device for rock mechanics experiments in this embodiment includes a confining pressure chamber, which includes a horizontal bottom plate 1, a transparent enclosure 2 connected to the horizontal bottom plate by bolts, and the top surface of the horizontal bottom plate The sealing gasket 3 between the lower end surface of the transparent enclosure, the upper middle part of the upper end of the transparent enclosure is provided with an upper pressure head 4, and the transparent enclosure is also provided with a sealing ring 5 that slides and seals up and down with the upper pressure head. The middle part of the lower end is provided with a lower pressure head 6, and a sealing ring is provided on the horizontal bottom plate which slides and cooperates with the lower pressure head up and down; the side of ...
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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...
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IPC IPC(8): G01N3/02G01N3/06G01N3/12
CPCG01N3/02G01N3/06G01N3/12
Inventor 吴斐陈结蒲源源尚雪义张平邹全乐张闯其他发明人请求不公开姓名
Owner CHONGQING UNIV
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