西铭矿坚硬顶板水力压裂弱化技术应用  

Application of Hydro-fracturing Weakening Technology for Hard Roof in Ximing Colliery

作　　者：梁铁光 Liang Tieguang(Ximing Colliery,Xishan Coal and Electricity Co.,Ltd.,Shanxi Coking Coal Group Co.,Ltd.,Taiyuan,Shanxi 030052)

机构地区：[1]山西焦煤西山煤电西铭矿,山西太原030052

出　　处：《江西煤炭科技》2023年第2期10-12,16,共4页Jiangxi Coal Science & Technology

摘　　要：针对西铭矿坚硬顶板48712工作面矿压显现剧烈问题,采用高、低位水力压裂钻孔交错布置技术对48712工作面顶板进行弱化,本文设计了水力压裂弱化顶板技术参数,并进行现场应用。结果表明:采用水力压裂后,相邻两压裂孔内出现导通裂隙,压裂钻孔影响半径大于4 m,压裂效果较为理想;48712工作面初采期间矿压监测结果表明,采取水力压裂弱化顶板后,工作面来压强度明显降低。In view of the severe ground pressure behavior of the hard roof at 48712 working face in Ximing mine,the author presents the high and low hydro-fracturing drilling staggered arrangement technology to weaken the roof,whose field results show that after hydro-fracturing,there are conduction fractures in the two adjacent fracturing holes with ideal fracturing effect with more than 4-meter influence radius of the fracturing borehole;the pressure intensity of the working face is significantly reduced according to the ground pressure monitoring results during the initial mining at 48712 working face.

关 键 词：坚硬顶板 强度弱化 顶板钻孔 水力压裂 

分 类 号：TD823.85[矿业工程—煤矿开采]