建井技术
建井技術
건정기술
2014年
5期
16-18
,共3页
立井%含水层%工作面预注浆%止浆垫
立井%含水層%工作麵預註漿%止漿墊
립정%함수층%공작면예주장%지장점
mine shaft%aquifer%pre-grouting at sinking face%concrete plug
宝山铅锌矿主井深832m ，净直径4?5m。井深606?1～636?1m段细砂岩含水层，涌水量达100m3／h ，采用工作面预注浆技术堵水加固，注浆段高35m ，在工作面构筑止浆垫，分段下行压入式注浆，注浆终压8M Pa。浆液以单液水泥浆为主；双液浆在注浆结束时，用于封孔。注浆后，该含水层涌水量降到了1?8m3／h ，堵水率达98?2％，取得了良好的效果。
寶山鉛鋅礦主井深832m ，淨直徑4?5m。井深606?1～636?1m段細砂巖含水層，湧水量達100m3／h ，採用工作麵預註漿技術堵水加固，註漿段高35m ，在工作麵構築止漿墊，分段下行壓入式註漿，註漿終壓8M Pa。漿液以單液水泥漿為主；雙液漿在註漿結束時，用于封孔。註漿後，該含水層湧水量降到瞭1?8m3／h ，堵水率達98?2％，取得瞭良好的效果。
보산연자광주정심832m ，정직경4?5m。정심606?1～636?1m단세사암함수층，용수량체100m3／h ，채용공작면예주장기술도수가고，주장단고35m ，재공작면구축지장점，분단하행압입식주장，주장종압8M Pa。장액이단액수니장위주；쌍액장재주장결속시，용우봉공。주장후，해함수층용수량강도료1?8m3／h ，도수솔체98?2％，취득료량호적효과。
A mine main shaft of Baoshan Lead and Zinc Mine had a depth of 832m and a net diameter of 4.5m. At a section of 606. 1 ~ 636.1m of the mine shaft,there was a fine sandstone aquifer and a water flow was 100m3 /h. A pre—grouting technology at the mine shaft sinking face was applied to the water sealing and reinforcement. A grouting section was 35m in height. A concrete plug was built at the mine shaft sinking face. A sectional downward pressurized grouting was applied and the final pressure of the grouting was 8MPa. The grout was a single cement grout mainly and a double grout would be applied to seal the borehole when the grouting operation was terminated. After the grouting conducted,the water flow of the aquifer was reduced to 1.8m3 /h,the water sealing rate was at 98.2% and a excellent effect was obtained.
