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Author(s): |
Qing Ye, School of Energy and Safety Engineering, Hunan University of Science and Technology, XiangTan 411201;State Key Laboratory of Coal Resource and Safe Mining(cumt), XuZhou, 221008;State Key Laboratory of Coal Resource and Safe Mining(cumt), XuZhou, 221008;YI
Bai-quan Lin, State Key Laboratory of Coal Resource and Safe Mining(cumt), XuZhou, 221008;
Jian-xin Li, YI MA Coal Industry Group co,ltd, Yi Ma 472300
Guo-qi Li, YI MA Coal Industry Group co,ltd, Yi Ma 472300
Shou-Ren Xu, YI MA Coal Industry Group co,ltd, Yi Ma 472300 |
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Abstract: |
The 33207 working face is the coal-mining face with extraordinarily high gas emission. Accordingto the characteristics of coal seam occurrence and gas emission in 33207 working face, the gas emission quantityis measured by element method and the gas emission source is analyzed, finally the law of gas emissionand gas migration are obtained. According to the control experience and technology of previous workingfaces, the “five-in-one” comprehensive control technologies are adopted as follows: U type ventilation, shallowborehole drainage technology in pressure relief region of working face, fan borehole drainage technologyin coal- mining seam, roof borehole drainage technology, and gas drainage technology of top corner by innerinterlocked low tail laneway. Finally, the drainage technics and application condition on all drainage methodsare obtained. By these measures, the problem of gas emission and gas over limit of working face with extraordinarilyhigh gas emission is solved efficiently, and the outburst danger of gas and coal is eliminated, sosafety production is ensured. The “five-in-one” comprehensive control technologies can offer the instructionfor the similar working face with extraordinarily high gas emission.
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