综放工作面布孔方式及层位选择考察研究  

Investigation and Study on Hole Layout and Horizon Selection in Fully Mechanized Top-coal Caving Face

作　　者：苏龙 范宁 贾优鹏 Su Long;Fan Ning;Jia Youpeng(China Coal Huajin Group Co.,Ltd.,Shanxi Hejin 043300)

机构地区：[1]中煤华晋集团有限公司,山西河津043300

出　　处：《山东煤炭科技》2022年第3期38-40,44,48,共5页Shandong Coal Science and Technology

摘　　要：为进一步降低王家岭煤矿采煤工作面回风隅角瓦斯浓度,实现井下瓦斯“零”超限目标,针对煤层瓦斯含量小、煤层透气性系数低的综放工作面钻孔布置方式及层位选择进行考察研究。结果表明,采用高位水平定向钻孔抽采采煤工作面本煤层卸压瓦斯效果最好;经统计分析,钻孔应布置在距巷道顶板45~60 m,距巷道20~36 m范围内。In order to further reduce the gas concentration in the return air corner of the coal face in Wangjialing Coal Mine and realize the goal of underground gas "zero" exceeding the limit,this paper investigates and studies the borehole layout and horizon selection of fully mechanized top coal caving face with low gas content and low permeability coefficient of coal seam.The results show that the effect of gas relief in this coal seam by using high horizontal directional drilling is the best,and through statistical analysis,the boreholes should be arranged in the range of 45-60 m from the roof of the roadway and 20-36 m from the roadway.

关 键 词：综放 难抽采 定向钻孔 效果 

分 类 号：TD712.6[矿业工程—矿井通风与安全]