吉宁煤矿可控冲击波增透技术应用分析

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英文篇名：Application Analysis of Controlled Shock Wave Penetration Enhancement Technology in Jining Coal Mine 作者：王向东 ; 李文刚 英文作者：WANG Xiangdong;LI Wengang; 关键词：高瓦斯低透气性厚煤层 ; 可控冲击波 ; 单孔抽采量 ; 有效抽采半径 英文关键词：High gas low permeability thick coal seam;;Controllable shock wave;;Drainage quantity of single hole;;Effective extraction radius 中文刊名：XSKJ 英文刊名：Shanxi Coking Coal Science & Technology 机构：华晋焦煤有限责任公司;华晋吉宁煤业有限公司; 出版日期：2019-02-15 出版单位：山西焦煤科技 年：2019 期：v.43;No.281 语种：中文; 页：XSKJ201902002 页数：5 CN：02 ISSN：14-1311/TD 分类号：6-9+13

摘要

吉宁煤矿2~#煤层属于高瓦斯低透气性的厚煤层,现有的瓦斯治理方法无法快速有效地抽采瓦斯,为了增加煤层的透气性,提高钻孔的抽采效率,减少作业时间,提高抽采量,该矿采用了可控冲击波技术。通过专门的试验设计,利用考察钻孔和冲击钻孔的交互布置,实现各项参数的获取。经过一阶段的试验,发现可控冲击波技术可以将单孔抽采量增加11倍,钻孔有效抽采半径增加7.5倍,有效降低了60%以上的瓦斯治理时间,适于低透气性高瓦斯煤层瓦斯治理。
        No.2 coal seam of Jining coal mine belongs to the thick coal seam with high gas and low permeability. The existing gas control method can not drain gas quickly and effectively. In order to increase the permeability of the coal seam, improve the drainage efficiency of boreholes, reduce working time and improve the gas amount, the mine uses a controlled shock wave technology. Through the special experimental design, the interaction layout of the original boreholes and the testing boreholes is used to get parameters for comparison. The phase one experiment shows that the controllable shock wave technology can increase the extraction amount by 11 times, the effective impacted radius of single borehole by 7.5 times, and the gas treatment time can be effectively reduced by more than 60%, which is suitable for coal seam with low gas permeability and high gas content.

引文

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