工作面坚硬顶板注水软化及水压致裂作用分析  

Analysis on water injection softening and hydraulic fracturing on hard roof of working face

作　　者：高飞 Gao Fei(Du’erping Mine,Xishan Coal and Power Group,Taiyuan 030022,China)

机构地区：[1]西山煤电杜儿坪矿,山西太原030022

出　　处：《煤炭与化工》2018年第6期40-42,46,共4页Coal and Chemical Industry

摘　　要：以杜儿坪2号煤为实例,分析对比了4种常见坚硬顶板管理方案,确定了压力注水方案的优越性。对坚硬顶板注水软化效果进行模拟分析,得出可使基本顶初次来压及周期来压步距分别降低30%和24%,水压致裂也有效缓解了巷道围岩应力,大大减小了巷道破坏。This paper analyzed and compared four common hard roof management schemes,and determined the advantages of the pressure water injection scheme,simulation analysis was carried out on the hard roof water softening effect,it was concluded that the technology can make the basic roof first weighting and periodic weighting interval decrease by 30%and 24%respectively,the hydraulic fracturing was effective in relieving the stress of surrounding rock of roadway,greatly reduced the damage of roadway.

关 键 词：坚硬基本顶 细砂岩 软化 水压裂缝 

分 类 号：TD327.2[矿业工程—矿井建设]