流沙层置换注浆施工技术  

Replacement Grouting Technology in Drift Sand Layer

作　　者：陈金山[1] 张世轶[1] 

机构地区：[1]河南煤业(焦煤)集团中马村矿,河南焦作454003

出　　处：《山西煤炭》2012年第2期71-73,共3页Shanxi Coal

摘　　要：针对厚度11m、水压1.5MPa、最大单孔涌水量153.9m3/h流沙层,采用二次置换注浆,并用钢筋混凝土作为骨架加固井筒周边,使井筒周边形成结石体帷幕;探注孔涌水量超标即注脲醛树脂化学浆液,采用小段高掘砌施工方式,加强井筒支护强度,顺利通过了流沙层。A specific drift sand layer(11 meters deep,water pressure=1.5Mpa,and maximum single-hole water yield=153.99m3/h) used secondary replacement grouting;reinforced concrete strengthened around the shaft as skeleton;and aggregated masses shield formed.If water flow of detection hole exceeded standard,urea-formaldehyde resin chemical slurry would be grouted.Small section high driving was used to reinforce shaft support,which passed the drift sand layer successfully.

关 键 词：流沙层 置换注浆 小段高掘进 

分 类 号：TD2[矿业工程—矿井建设]