Coal bed overburden strata broken coal and rock mass gas transport and extraction experiment system

An experimental system and technology for coal and rock mass, applied in the field of coal seam overlying fractured coal rock mass gas migration and extraction experimental system, can solve the problem of inability to continuously pressurize, to simulate the stress state of rock mass, and inability to collapse process of rock mass. control and other issues to achieve the effect of avoiding rock movement

Active Publication Date: 2014-08-13
CHONGQING UNIV
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Problems solved by technology

However, due to the complex mining geological conditions, mining problems are mostly large deformation and discontinuous deformation problems, and the current computer numerical simulation has limitations in solving the problem of discontinuous large deformation, and cannot completely and accurately reflect the specific conditions during the mining process. movement of rock
[0004] Therefore, the similar simulation experiment used by the technicians can better solve the above problems, because the similar simulation uses th

Method used

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  • Coal bed overburden strata broken coal and rock mass gas transport and extraction experiment system
  • Coal bed overburden strata broken coal and rock mass gas transport and extraction experiment system
  • Coal bed overburden strata broken coal and rock mass gas transport and extraction experiment system

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0036] like figure 1 , image 3 , Figure 4 , Figure 5 As shown, it includes a static servo hydraulic control system 1 and a model base 2; the model base 2 includes a bottom plate 3, four front, rear, left and right side walls and a top plate 4 installed on the bottom plate 3, and the bottom plate 3. Four side walls and top plate 4 enclose a cuboid space for filling simulation materials; the front wall is made of transparent plexiglass plate 5; perforations 105 and flowmeter 35 are provided on the rear wall, and the The rear wall is made of rectangular steel plate 6;

[0037] like figure 1 , image 3 As shown, a row of jacks 50 are arranged on the bottom plate, the top plate, the left side wall and the right side wall, the other end of the jacks 50 is provided with a pressure plate 100, and each jack 50 is provided with a pressure sensor 6;

[0038] l...

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Abstract

The invention discloses a coal bed overburden strata broken coal and rock mass gas transport and extraction experiment system which comprises four static servo hydraulic control systems and a model base, wherein the model base comprises a bottom plate, front, rear, left and right side walls on the bottom plate, and a top plate, which define a cubic space filled with simulation materials; an air vent pipe is arranged on the rear side wall; the four static servo hydraulic control systems are connected with lifting jacks on the bottom plate, the top plate, the left side wall and the right side wall, respectively; a steel wire corrugated pipe is arranged in the model base; a model base supporting device is arranged at the bottom of the model base. The limitation of conventional computer numerical simulation for solving a discontinuous large deformation problem is eliminated, and a phenomenon that stratum movement caused by mining in a mining process under specific conditions cannot be completely and accurately reflected is avoided. Meanwhile, a gas transport law and a gas extraction law in a pressure relief area can be tested.

Description

technical field [0001] The invention relates to an experimental system for gas migration and drainage of coal seam overburden fractured coal and rock mass. Background technique [0002] With the development of society, more and more mineral resources under complex geological conditions have been explored and developed. Due to the extremely complex geological conditions, the mechanical problems in the mining process of ore deposits are very important for the reasonable selection of mining methods and structural parameters and the improvement of mining intensity. , rational use of mineral resources, ensuring the safety of workers and ultimately improving the economic benefits of mining are particularly important. [0003] In recent years, the widespread application of electronic computers in mineral deposit mining has provided an effective means to solve the above-mentioned complex problems. For example, analysis engineering software has been widely used in the mining industry...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 张东明齐消寒张先萌郑彬彬王浩易理德代金鑫代沛马群汤伏蛟罗小彦
Owner CHONGQING UNIV
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