注浆技术在预防井下突水事故中的应用

峰峰集团公司梧桐庄煤矿2102工作面固采动压力作用导致奥灰水沿断层涌水：为切断涌水通道采用注浆技术，沿断层及裂隙高压注入泥浆，使其泥浆充塞裂隙凝结加固岩层，以降低岩层的渗透性达到堵漏效果。该矿2102工作面根据地质情况，设计了一套完整的施工程序，共注入水泥2万t，涌水量由10m^3／min降至1m^3／min，堵水率达到90％，达到了预期目的。

Application of Grouting Technique in Underground Mine Water Bursting Prevention

No.2102 working face of Wutongzhuang eoalmine, Fengfeng Group Company, because of induced fracture caused Ordovieian limestone water inflow along the fault. Grouting technique is used to cut down the inflow channel, injecting slurry along the fault and fracture filling in fractures and cemented, reduced strata permeability. Based on geological condition, a complete order of operation has designed, totally 20,000t cement injected, water inflow from 10m^3/min dropped down to 1m^3/min, leak stopping rate 90%, anticipated target achieved.