宏岩煤矿综放工作面高抽巷合理层位布置研究
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摘要
针对高瓦斯综放工作面瓦斯超限问题,根据宏岩煤矿10101工作面的实际地质条件和开采工艺,基于工作面覆岩破坏高度和高抽巷层位理论,分析认为高抽巷层位理论高度应布置在23～50.5m之内。并通过数值模拟进行验证,得出9+10煤采动后L_4石灰岩以下的岩层全部垮落,垮落带发育高度为21m左右,结合该矿的实际情况确定高抽巷层位布置在6煤中。
To gas transfinite problem of high gas top coal caving working face,according geological situation and mining technical of 10101 working face of Hongyan coal mine,based on overburden broken height of working face and high level drainage roadway position theory,the theoretical height should be arranged within 23 ～ 50. 5 m,and then verified by numerical simulation,the following conclusion was reached that all strata below L_4 limestone would collapsed after 9+10 coal seam was mined,collapse zone development height was about 21 m,at last,high level position was layout in No. 6 coal seam.
To gas transfinite problem of high gas top coal caving working face,according geological situation and mining technical of 10101 working face of Hongyan coal mine,based on overburden broken height of working face and high level drainage roadway position theory,the theoretical height should be arranged within 23 ～ 50. 5 m,and then verified by numerical simulation,the following conclusion was reached that all strata below L_4 limestone would collapsed after 9+10 coal seam was mined,collapse zone development height was about 21 m,at last,high level position was layout in No. 6 coal seam.
引文
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[3]黄森林.覆岩垮落带高度对高位钻孔瓦斯抽放效果影响的研究[J].矿业安全与环保,2013,40(6):15-18.
[4]娄金福.顶板瓦斯高抽巷采动变形机理及优化布置研究[D].北京:中国矿业大学(北京),2008.
[5]李迎超,张英华,熊珊珊.东庞矿瓦斯抽放参数优化数值模拟[J].有色金属(矿山部分),2011,63(3):55-57,65.
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[7]李胜,毕慧杰,罗明坤,等.高瓦斯综采工作面顶板走向高抽巷布置研究[J].煤炭科学技术,2017,45(7):61-67.
[8]钱鸣高,许家林.覆岩采动裂隙分布的“O”形圈特征研究[J].煤炭学报,1998,23(5):466-469.
[9]俞启香,程远平,蒋承林,等.高瓦斯特厚煤层煤与卸压瓦斯共采原理及实践[J].中国矿业大学学报,2004,33(2):127-131.