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Dust Control Method for Underground Coal Mine Roadway Excavation

An underground roadway and dust technology, applied in mine/tunnel ventilation, drilling equipment and methods, dust prevention, etc., can solve the problems of prone to disaster accidents, large pollution, low efficiency, etc., and avoid dust and gas disaster accidents occurrence, improvement of construction efficiency, and improvement of the construction environment

Active Publication Date: 2019-04-30
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the problems of heavy pollution, low efficiency, and easy occurrence of disaster accidents in the roadway excavation process existing in the prior art, and proposes a coal mine underground roadway excavation dust control method. Compressed ventilation and dust suction discharge a large amount of dust and gas and other harmful gases generated during the roadway excavation process, with low pollution and high efficiency, which can reduce the occurrence of disasters and accidents

Method used

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  • Dust Control Method for Underground Coal Mine Roadway Excavation
  • Dust Control Method for Underground Coal Mine Roadway Excavation
  • Dust Control Method for Underground Coal Mine Roadway Excavation

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Embodiment

[0031] Such as Figure 4 As shown, the coal mine underground roadway excavation negative pressure ventilation and dust suction construction process method of the present invention comprises the following steps:

[0032] Construction preparation steps: According to the pre-excavation space range and geological data of the roadway, the drilling trajectory of the directional and penetrating tunnel is precisely designed. The layout and extension of the central connection line of the excavation roadway.

[0033] Hole opening step: use drilling rig 1, flat-bottomed full-face drill bit and outer flat drill pipe, and drill 12-15m in rotation according to the design opening parameters.

[0034] The construction steps of directional pilot hole drilling: put in the measurement-while-drilling system 2, the screw motor deflection drilling tool 3 and the directional drill bit 4, and conduct directional drilling according to the design trajectory of the drilling hole. , azimuth, tool face ...

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Abstract

The invention relates to a method for controlling dust, which belongs to the technical field of coal mine mining, and in particular to a method for controlling dust in underground tunnels of coal mines. The method discharges a large amount of dust, gas and other harmful gases produced in the process of roadway excavation through negative pressure ventilation and dust suction of the drilling of the tunnel through a large aperture, with little pollution and high efficiency, and can reduce the occurrence of disasters and accidents.

Description

technical field [0001] The invention relates to a method for controlling dust, which belongs to the technical field of coal mine mining, and in particular to a method for controlling dust in underground tunnels of coal mines. Background technique [0002] Roadway excavation is an unavoidable production link in coal mine production. Whether it is rock roadway or coal roadway excavation, a large amount of dust and harmful gas pollution will be generated. Traditionally, the dust is removed by the compressor fan and the air tube, and a large amount of dust is often generated in the roadway after the roadway is excavated. Harmful gases such as dust and gas endanger the physical and mental health of workers, easily cause disasters and accidents, and reduce the efficiency of tunneling construction. [0003] In order to solve the above problems, a kind of negative pressure ventilation and dust suction construction method for coal mine underground roadway excavation was designed by i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/20E21F1/08E21F7/00E21B7/28E21B23/00
CPCE21B7/28E21B23/00E21F1/08E21F5/20E21F7/00
Inventor 王毅宋庆尧张杰王新琨石浩黄寒静洪建俊
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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