松软、低透气及底板易变形煤层瓦斯治理实践

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英文篇名：Gas Control Practice in Soft, Low Permeability and Prone to Deformation Coal Seam 作者：梁谦 英文作者：Liang Qian;No.2 Well of Sihe Coal Mine,Shanxi Jincheng Anthracite Mining Group Co.,LTD.; 关键词：软煤层 ; 瓦斯抽采 ; 钻孔施工 ; 技术实践 英文关键词：soft coal seam;;gas extraction;;drilling construction;;technical practice 中文刊名：MTSD 英文刊名：Shandong Coal Science and Technology 机构：山西晋城无烟煤矿业集团有限责任公司寺河煤矿二号井; 出版日期：2018-12-28 出版单位：山东煤炭科技 年：2018 期：No.220 语种：中文; 页：MTSD201812051 页数：4 CN：12 ISSN：37-1236/TD 分类号：130-132+135

摘要

晋城矿区15~#煤层煤质松软,低透气,底板易变形,巷道掘进时软煤易片帮引发瓦斯超限事故,施工抽采钻孔遇软煤出现压钻及塌孔造成抽放效果差,煤层底板遇水变形后密闭墙出现裂隙存在漏风及外涌瓦斯隐患。针对上述问题,寺河煤矿研究提出二号井15~#煤层瓦斯治理综合措施,取得良好效果。
        Coal seam No. 15 in Jincheng Mining Area is soft, low permeability, and floor is easily deformed. Gas overload accident is easily caused by soft coal sheet during roadway excavation. Pressure drilling and collapse of soft coal in construction drainage boreholes result in poor drainage effect. There are hidden dangers of air leakage and gas gushing in the crack of sealing wall after water deformation of coal seam floor. In view of the above problems, Sihe Coal Mine put forward comprehensive measures for gas control in No. 15 coal seam of No. 2 Well, and achieved good results.

引文

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