封闭不良钻孔启封方法探讨  

Discussion on unsealed pore drilling and unsealing methods

作　　者：李建文 段俭君[2] Li Jianwen;Duan Jianjun(Yangquan Coal Industry Group,Yangquan 045000,China;The Third Hydrogeological Team of China Coal Geology Administration,Handan 056001,China)

机构地区：[1]阳泉煤业集团,山西阳泉045000 [2]中国煤炭地质总局第三水文地质队,河北邯郸056001

出　　处：《煤炭与化工》2020年第1期57-60,共4页Coal and Chemical Industry

摘　　要：封闭不良钻孔不同程度连通含水层,是矿井人为导水通道的一种特殊垂向构造,广泛分布于各煤矿区,对煤矿安全生产危害极大。由于钻孔封孔材料、工艺的局限和施工管理不严等原因形成封闭不良钻孔。封闭不良钻孔启封首先进行探孔,遇泥浆段采用冲孔、水泥浆固结体采用岩芯钻具套取方法,保障探孔不出老眼,对位置不清楚钻孔采用调查、物探、井下探测综合探孔。探孔完成进行注浆封闭,对注浆材料、工艺、压力、施工组织进行了专门设计,达到启封不良钻孔防治水要求,对解决封闭不良钻孔有重要作用。Closed poor boreholes connecting with aquifers to varying degrees,it was a special vertical structure of artificial water-conducting channels in mines.It was widely distributed in coal mines and was extremely harmful to the safety of coal mines.Poorly closed boreholes have been formed due to the limitations of drilling and sealing materials,processes,and lax construction management.Proper drilling was first performed when the poorly sealed boreholes were unsealed.In the case of mud sections,punching was used,and the cement slurry consolidation body was used with core drilling tools.Detecting comprehensive boreholes,grouting was completed and the grouting was closed.The grouting materials,process,pressure,and construction organization were specially designed to meet the requirements for prevention and treatment of poorly sealed boreholes and had an important role in solving the poorly sealed boreholes.

关 键 词：不良钻孔 探孔 注浆封闭 

分 类 号：TD74[矿业工程—矿井通风与安全]