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Technique for preventing coal and gas burst accident enlarging

A gas outburst and control system technology, applied in the direction of fire prevention, dust prevention, safety devices, etc., can solve problems such as explosion, ventilation system headwind, and expansion of the scope of accident hazards

Inactive Publication Date: 2009-08-26
陈万虎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when workers carry out coal roadway excavation and blasting operations, they only carry out the blasting operation after the staff evade to a safe area. Once a large coal and gas outburst accident occurs, it is very easy to cause headwinds in the ventilation system or even gas explosions. Gas and coal will also impact other areas and cause explosions, expanding the scope of accident hazards

Method used

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  • Technique for preventing coal and gas burst accident enlarging
  • Technique for preventing coal and gas burst accident enlarging
  • Technique for preventing coal and gas burst accident enlarging

Examples

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Embodiment Construction

[0010] Depend on figure 1 , figure 2 , image 3 It can be seen that the entrance 1 of the excavation roadway is connected with the fresh air flow roadway 2, which can be a transportation alley or other roadways, and two two-way dampers 3 are arranged on the inner side of the entrance 1 of the excavation roadway. A local fan 10 is fixedly installed in the fresh air tunnel 2. The air outlet of the local fan 10 is connected with an air cylinder 9, and the air cylinder extends along the excavation roadway to the excavation face 8. The power of the local fan can be determined according to the air supply volume. The size is determined. Near the damper 3, a return air roadway 4 is developed to be used for the gas or coal dust normally released by the excavation roadway during the discharge operation. Near the position of 30 meters away from the excavation face, the inner wall of the excavation roadway is fixedly provided with an anti-burst fence 7, which moves along with the adva...

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Abstract

The invention discloses a technology which is used to prevent the expansion of coal and gas burst accident, wherein the entry of the excavation roadway is communicated with the fresh air flow roadway which is fixedly provided inside with an auxiliary blower of which the air outlet is connected with an air duct, the air duct is extended to the heading face along the excavation roadway; the invention is characterized in that the excavation roadway is fixedly provided with burst prevention fences and a coal and gas burst prevention impact device, which can prevent the expansion of the bursting coal and gas, avoid the bursting coal and gas from affecting other areas, limit the range of influence of the bursting coal and gas between the device and the heading face, prevent the coal and gas burst and the adverse wind and the expansion of the accident, lower economic losses and guarantee the life safety of miners.

Description

Technical field: [0001] The invention belongs to the technical field of coal and gas outburst control in underground tunneling roadways of mines. Background technique: [0002] Coal and gas outburst accidents are one of the main disasters in coal mines. Large-scale coal and gas outbursts can easily cause headwinds in mining areas and mines, leading to gas explosion accidents, which seriously threaten the lives of underground miners. According to the analysis of coal and gas outburst accidents in tunneling roadways, more than 95% of them occurred in induced outbursts during coal tunneling and blasting. At present, when workers carry out coal roadway excavation and blasting operations, they only carry out the blasting operation after the staff evade to a safe area. Once a large coal and gas outburst accident occurs, it is very easy to cause headwinds in the ventilation system or even gas explosions. Gas and coal will also impact other areas and cause explosions, expanding the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/00E21F11/00
Inventor 陈万虎郭中海俞宏庆单智勇杨伟蔡寒宇
Owner 陈万虎
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