高瓦斯综放工作面顶板破坏规律及高位钻孔抽采技术

发布时间：2018-02-23 05:49

本文关键词： 高瓦斯综放工作面顶板破坏规律高位钻孔瓦斯抽采　出处：《煤炭科学技术》2016年08期 　论文类型：期刊论文

【摘要】：为了确定半孤岛综放工作面邻空侧巷道高位钻孔终孔位置,以石泉煤矿30103半孤岛综放工作面为研究对象,通过数值模拟方法研究了30103半孤岛综放工作面上部160~175 m范围上覆岩层破坏规律,结果表明:工作面上覆岩层塑性区发育顺序由工作面中部向工作面上部逐渐发育,工作面在回采60~80 m范围内,工作面垮落带高度为16~21 m,工作面断裂带高度为21~43 m;依据数值模拟结果设计高位钻孔终孔位置为工作面上部顶板25~35 m层位,钻孔分布范围为工作面上部160~180 m范围,通过现场实测分析得出了高位钻孔抽采效果明显,参数设计合理。
[Abstract]:In order to determine the position of the high hole end hole in the side roadway adjacent to the semi-isolated island fully mechanized caving face, the 30103 semi-isolated island fully mechanized caving face of Shi Quan Coal Mine is taken as the research object. The failure law of overlying strata in the upper part of 30103 semi-isolated island fully mechanized caving face is studied by numerical simulation method. The results show that the development sequence of plastic zone of overlying strata is gradually developed from the middle part of the face to the upper part of the face. The height of caving zone is 1621 m and the height of fault zone is 21 ~ 43 m. According to the result of numerical simulation, the end hole position of high hole is 2535m above the top of the face, and the height of collapse zone is 1621 m, and the height of fault zone is 21 ~ 43 m, according to the result of numerical simulation, the end hole position of high hole is 2535m. The range of borehole distribution is 160 ~ 180 m above the working face. Through the field measurement and analysis, it is concluded that the extraction effect of high level borehole is obvious and the design of parameters is reasonable.
【作者单位】：煤科集团沈阳研究院有限公司;煤矿安全技术国家重点实验室;山西石泉煤业有限责任公司;
【基金】：国家自然科学基金青年基金资助项目(51404192,51504187) 中国博士后科学基金特别资助项目(2015T81043) 陕西省自然科学基础研究资助项目(2015JQ5174) 陕西省教育厅专项计划资助项目(15JK1479)
【分类号】：TD712.6

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