毕业设计-平煤五矿保护层开采瓦斯治理技术研究.doc

平顶山五矿保护层开采瓦斯治理技术研究 摘 要：瓦斯问题是制约煤矿安全生产的瓶颈，煤与瓦斯突出。保护层开采是防止煤与瓦斯突出最有效、最经济的技术。论文阐述保护层开采防治瓦斯突出的原理，针对平顶山五矿在开采煤层的过程中可能遇到的煤与瓦斯突出问题，确定了保护层掘进防突、回采瓦斯抽放技术等研究内容。结合现场实践，综合考虑《防治煤与瓦斯突出细则》，制定了保护层掘进期间综合防治煤与瓦斯突出措施，保护层工作面的安全掘。 关键字：煤与瓦斯突出；保护层；防突；瓦斯抽放 Research of gas Controlling Technology of Protective seam in Pingdingshan Coal Group No.5 Mine Abstract: The problem caused by methane is a bottleneck, which limits safety-production in mines, so it is more important to control coal-gas outburst. Obviously, mining protective seam is one of most effective and economical technology against coal-gas outburst. According to the gas geological condition in Pingdingshan Coal Group No 5 Mining, this strategy was put in practice. Combined with the strategy, the paper studies the gas controlling technology in mining protective seam. It was explored the principle mining protective coal seam for coal-gas outburst, Aiming at the problem of coal-gas outburst during the process of mining coal seals in Pingdingshan No.5 Mine, The research contents were the technology to avoid the risk of coal-gas outburst as coal roadway being excavated, to study techniques of gas drainage as mining workface to be extracted. According to the present practice and Detailed Rules to Avoid Risk of Coal-Gas Outburst, integrated measures of gas control were worked out to avoid risk of coal and gas outburst and safety measures were prepared to ensure protective seam working face to been safely excavated. According to the produce practice, the first plan of gas drainage design is put forward. This thesis puts forward two schemes: one of the schemes is the high position bores and the goave gas drainage; the other is gas drainage by the long level bore along the coping rock and the bores through the soleplate .Not only the coal-gas outburst and the exceeding limit of gas concentration could be prevented during the process of protecting layer mined, but also the pressure of gas in the protected coal layer could be reduced. The pr