Soft and hard sealing barrier method for coal mine underground oxygen-free tunneling working surface

A technology for excavating working faces and coal mines, which is applied in the ventilation of mines/tunnels, mining devices, mining equipment, etc. It can solve the problem that the barrier effect cannot reach the anaerobic working face, etc., so as to reduce the time for stopping production and control the gas, and eliminate the gas. The effect of burning and explosion, increasing the speed of the tunnel

Inactive Publication Date: 2017-05-31
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

The current sealing technology used for refuge chambers and movable rescue cabins only provides one-way isolation, and its

Method used

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  • Soft and hard sealing barrier method for coal mine underground oxygen-free tunneling working surface
  • Soft and hard sealing barrier method for coal mine underground oxygen-free tunneling working surface

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Embodiment Construction

[0018] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0019] The invention provides a soft and hard sealing barrier method for an anaerobic driving face in an underground coal mine.

[0020] This method isolates the external air from the tunneling gas through the hard barrier system, soft barrier system, intelligent dynamic drainage system and monitoring system to achieve no oxidation in the tunneling roadway; the hard barrier system includes dampers, tapes, and sealing strips , there are five dampers, such as figure 1 , figure 2 As shown, five dampers 14 divide the tunneling roadway 17 into six areas, which are: high-concentration gas drainage area 1, leakage buffer area 2, nitrogen curtain barrier area 3, effect monitoring area 4, positive pressure emergency area 5 and Nitrogen area 6; the soft barrier...

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Abstract

The invention provides a soft and hard sealing barrier method for a coal mine underground oxygen-free tunneling working surface and belongs to the technical field of mining. The method involves a hard barrier system, a soft barrier system, an intelligent dynamic drainage system and a monitoring system. By combining a nitrogen curtain and an air door, a tunneling roadway is divided into six areas so that gas cannot diffuse outwards, a bypass is divided into three areas so that external air cannot enter the working surface, and accordingly the oxygen-free tunneling roadway is achieved. According to the technology, mixing of the air and the gas is avoided radically and effectively, the gas explosion accident in the tunneling roadway is prevented, the safety of the tunneling working surface is guaranteed, the utilization rate of the gas is increased, and the tunneling efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a soft and hard sealing barrier method for an anaerobic driving face in an underground coal mine. Background technique [0002] my country is a big country of coal production. While bringing huge economic and social benefits, the frequent occurrence of safety accidents in the process of coal mining has also caused headaches for the majority of coal mine workers. The consequences of explosion accidents caused by gas and oxygen concentrations reaching a certain value during excavation are particularly serious. The traditional gas prevention and control methods mostly use air to take away the released gas. However, due to the difficulty in determining the gas content in front of the excavation and the unknown release amount, the concentration ratio of the two cannot be well controlled within a safe range, so the gas explosion at the excavation face cannot be essentially prevented. ...

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Application Information

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IPC IPC(8): E21F17/12E21F1/10E21F7/00E21F17/18E21F5/00
CPCE21F17/12E21F1/10E21F5/00E21F7/00E21F17/18
Inventor 高玉坤伯玉兰付明明张英华黄志安贺帅严屹然罗强赵焕娟
Owner UNIV OF SCI & TECH BEIJING
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