Coal mine goaf coal spontaneous combustion flow field simulation experiment table

A simulation experiment, goaf technology, applied in mining equipment, earth-moving mining, mine/tunnel ventilation, etc., can solve the problems of on-site engineering research difficulties, personnel cannot enter the observation environment, etc., and achieve the effect of reducing losses

Inactive Publication Date: 2017-05-24
CHINA UNIV OF MINING & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the goaf is full of collapsed rocks, personnel cannot enter the observation environment and construction, which has caused great difficulties for on-site engineering research

Method used

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  • Coal mine goaf coal spontaneous combustion flow field simulation experiment table
  • Coal mine goaf coal spontaneous combustion flow field simulation experiment table
  • Coal mine goaf coal spontaneous combustion flow field simulation experiment table

Examples

Experimental program
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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0020] figure 1 Shown is a three-dimensional schematic diagram of a flow field simulation experiment platform for coal spontaneous combustion environment in a coal mine goaf according to the present invention. The test bench includes a simulated gob box 24, a simulated ventilation system, a gas release system, a temperature monitoring system and a data acquisition system.

[0021] The simulated goaf box 24 is composed of a simulated goaf and a simulated coal mining face 5 .

[0022] The simulated coal mining face is composed of a simulated coal mining face and a simulated supporting roof, the simulated coal mining face is located at the bottom of one end face of the simulated goaf box, and the simulated supporting roof is located above the simulated coal mining face.

[0023] In the simulated mined-out area box, sand and gravel isolation bel...

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Abstract

The invention discloses a coal mine goaf coal spontaneous combustion flow field simulation experiment table for simulating temperature field development, air current flowing and gas migration state of residual coal in a coal mine goaf in spontaneous combustion environment. The experiment table comprises a ventilation system, a ventilation working face stope, a simulated goaf, a gas release system, a temperature monitoring system and a data collection system. The experiment table can simulate flow field development of the goaf in a normal ventilation state and in a state when a fire area of the goaf is closed to acquire parameters like gas concentration and speed, spatial pressure and coal rock temperature at different positions of the goaf in a spontaneous combustion environment condition, and a basis can be provided for studying and mastering laws of temperature field development, air current flowing and gas migration in goaf coal spontaneous combustion environment. The experiment table is suitable for simulating temperature field development, air current flowing and gas migration in the coal spontaneous combustion environment of a three-dimensional goaf and judging disastrous and dangerous areas.

Description

technical field [0001] The invention relates to an experimental device for researching spontaneous combustion of coal in a goaf of a coal mine, in particular to a simulated experimental platform for a coal spontaneous combustion environment flow field in a goaf of a coal mine. [0002] technical background [0003] Coal is the main energy consumed in my country, accounting for about 70% of the primary energy composition. Since the vast majority of coal mines in my country are underground operations, the coal seam occurrence conditions are complex and changeable, and various disasters are mutually inducing, which can easily cause serious and catastrophic disasters. Among them, one of the most prominent disasters in underground coal mines is the spontaneous combustion of gas and coal seams. Fires are coupled to each other. With the increase of coal mining depth and mining intensity, the coexistence of coal spontaneous combustion hazards and gas disasters has become more and mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/02
CPCE21F1/02
Inventor 秦波涛李林马东卓辉梁洪军高昂宋爽王俊高远侯晋
Owner CHINA UNIV OF MINING & TECH
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