【作者】 李鑫；

【导师】 梁冰；

【作者基本信息】 辽宁工程技术大学 ， 矿业工程， 2013， 硕士

【摘要】 瓦斯是影响矿井安全生产重大灾害之一。亭南煤矿是高瓦斯矿井,论文针对该矿高瓦斯煤层进行瓦斯治理,通过理论分析、数值模拟以及现场试验,提出关于亭南煤矿204工作面瓦斯治理方案,实现矿井安全生产。亭南煤矿主采煤层4#煤是高瓦斯厚煤层,204工作面是亭南矿首个大采高工作面,采高6m为高瓦斯易自燃超长综采工作面。在首次回采开始的120天里,风巷出现高瓦斯浓度天数占总回采天数的46%,更为严重的是在开采初期瓦斯涌出量过大,有时瓦斯浓度日平均值在1%以上多次出现上隅角瓦斯超限现象,给工作面的安全生产构成了严重威胁。论文在国内外对瓦斯运移规律以及瓦斯抽采工程研究的基础上,依据煤矿开采学、煤矿瓦斯防治理论、矿山压力与岩层控制学,通过数值模拟仿真分析瓦斯在煤层开采时的运移规律以及现场4#煤基础参数测定试验、瓦斯涌出量预测及瓦斯抽采半径试验确定了适用于亭南煤矿204工作面瓦斯治理方案,使得204工作面在开采过程中没有发生瓦斯事故,保证了矿井的安全生产。更多还原

【Abstract】 Gas is one of the major disaster influences on mine production safety.Tingnan coal mine is a highly gassy mine, through theoretical analysis, numerical simulation and field test,this thesis aims to coal mine gas for gas disaster research and puts forward the gas control scheme on the204working face for realizing safety mining.4#coal of Tingnan coal mine is gas thick coal seam. The first working face204is large mining height, high gas and easy self-ignition face.46%of the120days at the beginning of first mining the gas concentration in return airway was too high for mining. Sometimes the average value of gas density was as high as1%which made gas in upper corner goes beyond the limit and made serious threat to safety production of working face..This paper research on gas migration rule and gas extraction from engineering based on the current study, the basis of the theory of coal mining, coal mine gas prevention and control theory and mining pressure and strata control, through the numerical simulation analysis of the migration law of gas in coal seam mining and the4#coal base parameters determination test, by the forecast of gas emission and gas drainage radius tests to determine a set of design and some gas governance plan suitable for gas extraction Tingnan coal mine204working, which makes204working face have no gas accident happens in the process of production, ensure the safety of mine production.更多还原