A load-bearing coal fracture observation and gas seepage visualization experimental device
A technology of gas seepage and experimental equipment, which is applied in the direction of measurement equipment, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problem that the experimental equipment cannot meet the experimental needs, achieve intelligent experimental operation, and reduce manual labor Quantitative, authenticity-enhancing effects
Active Publication Date: 2018-04-20
HENAN INST OF ENG
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Problems solved by technology
[0004] The invention proposes an experimental device for carrying coal crack observation and gas seepage visualization, which solves the problem that the opaque experimental device cannot meet the experimental needs
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] like Figure 1~2 As shown, an experimental device for carrying coal crack observation and gas seepage visualization includes a transparent tempered glass 7, which is installed on a base 13, and a pressure chamber 8 is provided between the transparent tempered glass 7 and the base 13, and the pressure chamber 8 The pipeline communicates with the first valve 14, the first pressure gauge 15, and the confining pressure supply device 16 in sequ...
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The invention provides a visualization experiment device for bearing coal fracture observation and gas seepage. The problem that a nontransparent experiment device cannot meet the experiment requirement can be solved. The visualization experiment device comprises a transparent tempered glass; the transparent tempered glass is arranged on a base; a pressure chamber is arranged between the transparent tempered glass and the base; the pressure chamber is connected with a first valve, a first pressure gauge and a confining pressure air-feeding device in turn through a pipeline; the pressure chamber is communicated with a second valve through the pipeline; a transparent heat shrinking pipe is arranged in the pressure chamber; a test piece is arranged in the transparent heat shrinking pipe; an upper rock core plug is matched with the upper part of the transparent heat shrinking pipe; the upper rock core plug is connected with a piston rod; the piston rod passes through the transparent tempered glass; a sealing rubber ring is arranged between the piston rod and the transparent tempered glass; the piston rod is connected with a loading cylinder; the loading cylinder is connected with hydraulic oil. According to the invention, a coal test piece is wrapped by the transparent tempered glass and the transparent heat shrinking pipe and the pressure chamber is supplied with pressure by air, so that the image observation for crack extension is not affected and a microscopy camera is adopted for ream-time dynamic monitoring.
Description
technical field [0001] The invention relates to a gas permeability test device, in particular to a load-bearing coal crack observation and gas seepage visualization test device. Background technique [0002] Coal and gas outburst is an extremely complex mine gas dynamic phenomenon encountered in coal mine production. In recent years, coal mine gas explosions and coal and gas outburst accidents have occurred frequently in various places, and coal mine gas disasters have seriously affected the healthy development of the coal industry. Coal and gas outburst is the result of the joint action of in-situ stress, gas pressure and physical and mechanical properties of coal and rock. Therefore, an in-depth study of the mechanical properties of coal and rock under the coupling action of in-situ stress and gas, especially from the mesoscopic point of view, is conducive to a deeper understanding of the crack generation, dynamic process of expansion and final failure state in the proces...
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IPC IPC(8): G01N15/08G01N13/04
CPCG01N13/04G01N15/088
Inventor 郑吉玉王公忠田坤云王振江孙光中
Owner HENAN INST OF ENG