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An experimental device for simulating overburden migration and water inrush and sand inrush in underground coal mining

A technology of coal mining and experimental equipment, applied in the direction of material inspection products, soil material testing, etc., can solve the problems of inability to simulate aquifers and aquifer water pressure and water volume, and cannot be accurately controlled, so as to facilitate maintenance and maintenance, facilitate movement, Good control performance

Active Publication Date: 2016-03-30
NORTH CHINA INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned device is used in the experimental simulation process of solid similar materials in coal seam mining, it has the characteristics of easy assembly and loadability, but when simulating coal seam mining under the aquifer, overlying strata migration, and water and sand inrush and other solid-liquid coupling experimental simulations, There is still the problem that many aquifers cannot be simulated and the water pressure and water volume of the aquifer cannot be accurately controlled

Method used

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  • An experimental device for simulating overburden migration and water inrush and sand inrush in underground coal mining
  • An experimental device for simulating overburden migration and water inrush and sand inrush in underground coal mining
  • An experimental device for simulating overburden migration and water inrush and sand inrush in underground coal mining

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Experimental program
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specific Embodiment approach 1

[0017] Specific implementation mode one: as Figure 1~Figure 4 As shown, an experimental device for simulating overlying rock migration and water inrush and sand intrusion in underground coal mining, including a gas storage tank 27, a mine pressure model frame 24, a ground water pressure simulation experimental device 25, a water injection high pressure hose 23 and a gas injection high pressure hose 26. One end of the water injection high pressure hose 23 is connected to the water discharge valve 12 of the pressure water tank 21 in the ground water pressure simulation experiment device 25, and the other end of the water injection high pressure hose 23 is connected to the water inlet joint 8 on the mine pressure model frame 24 Connect, one end of the gas injection high-pressure rubber hose 26 is connected with the air inlet joint 18 of the pressure water tank 21 in the surface water pressure simulation experiment device 25, and the other end of the gas injection high pressure ru...

specific Embodiment approach 2

[0021] Specific implementation mode two: as figure 1 with Figure 4 As shown in the specific embodiment 1, an experimental device for simulating overlying rock migration and water inrush and sand intrusion in underground coal mining described in the first embodiment, the mine pressure model frame 24 includes a bottom plate support 1, a bottom plate 2, a plurality of wall panels 4, Two columns 5, two beams 6, multiple beam connecting plates 7, multiple water inlet joints 8 and multiple wall plate fixing parts 9;

[0022] The two columns 5 are fixedly connected to the two ends of the floor support 1 (using bolts), and the middle parts of the two columns 5 are processed with a plurality of water inlet holes (the interval between two adjacent water inlet holes is 70mm; The shape of the water hole is circular, which is convenient for connection), and the plurality of water inlet holes are arranged vertically along the column 5, and each water inlet hole is equipped with a water in...

specific Embodiment approach 3

[0023] Specific implementation mode three: as figure 1 with Figure 4 As shown, a kind of experimental device for simulating overlying rock migration and water inrush and sand intrusion in underground coal mining described in Embodiment 2, the base plate support 1, base plate 2, column 5, beam 6 and wall plate 4 are all grooves Steel structural parts. The strength is high, so that the mine pressure model frame 24 has good stability.

[0024] The function of the outlet slot 3 is to lead out the data lines of the embedded stress and strain sensors (external components of the device) in similar models to the external strain gauges to prevent the data lines from being cut off by the channel steel.

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Abstract

The invention discloses an experimental device for simulating overlaying strata migration and water and sand bursting of underground coal mining, and belongs to the technical field of coal mining. By using the experimental device, a similar material simulation experiment of real-time monitoring of water pressure and water volume of an overlaying aquifer during coal mining below the aquifer. One end of a water injection high-pressure hose is connected with a water drain valve of a pressure water tank in a surface water pressure simulation experimental device, and the other end of the water injection high-pressure hose is connected with a water inlet joint on a rock pressure model frame; one end of a gas injection high-pressure hose is connected with a gas inlet joint of the pressure water tank in the surface water pressure simulation experimental device, and the other end of the gas injection high-pressure hose is connected with a gas outlet joint of a gas storage tank. The device can be widely applied to similar simulation experiments of overlaying strata migration and water and sand bursting of coal mining below an upper overlaying water body or on a pressure bearing water body.

Description

technical field [0001] The invention relates to an experimental equipment for simulating underground coal mining, which belongs to the technical field of coal mining. Background technique [0002] At present, among the existing experimental devices for simulating underground coal mining in China, the horizontal-vertical combined loading similar simulation experimental frame (patent number: 200910020960.3), the similar material simulation experimental device for underground engineering (patent number: 201220603366.4), a three-dimensional similar material The simulation experiment support (patent number: 00226585.0), similar devices adopt the technical scheme of the single test stand assembly, and the single test stand is equipped with a pressure device, which belongs to the solid material experiment simulation device. Although the above-mentioned device is used in the experimental simulation process of solid similar materials in coal seam mining, it has the characteristics of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
Inventor 赵启峰梁育龙刘玉德田多连会青石建军王波李昊郭敬中
Owner NORTH CHINA INST OF SCI & TECH
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