建井技术
建井技術
건정기술
2014年
6期
8-10
,共3页
大直径立井%全深冻结%西部地区%软弱岩层
大直徑立井%全深凍結%西部地區%軟弱巖層
대직경립정%전심동결%서부지구%연약암층
large diameter mine shaft%full depth freezing%western area%soft rock strata
门克庆煤矿副井净直径10 m ，井深755.45 m ，采用全深冻结法施工，冻结深度768m。井筒所穿地层，大部分为白垩系和侏罗系软弱岩层，其中有3层含水层。冻结孔采用主孔＋辅助孔布置方式。井筒于2010-10-17正式开机冻结；至同年11月27日，冻结壁交圈；12月6日（开机冻结后49d）试挖；2012-01-02停止冻结。至2012-01-15，井筒安全顺利落底，取得预期效果。
門剋慶煤礦副井淨直徑10 m ，井深755.45 m ，採用全深凍結法施工，凍結深度768m。井筒所穿地層，大部分為白堊繫和侏囉繫軟弱巖層，其中有3層含水層。凍結孔採用主孔＋輔助孔佈置方式。井筒于2010-10-17正式開機凍結；至同年11月27日，凍結壁交圈；12月6日（開機凍結後49d）試挖；2012-01-02停止凍結。至2012-01-15，井筒安全順利落底，取得預期效果。
문극경매광부정정직경10 m ，정심755.45 m ，채용전심동결법시공，동결심도768m。정통소천지층，대부분위백성계화주라계연약암층，기중유3층함수층。동결공채용주공＋보조공포치방식。정통우2010-10-17정식개궤동결；지동년11월27일，동결벽교권；12월6일（개궤동결후49d）시알；2012-01-02정지동결。지2012-01-15，정통안전순리락저，취득예기효과。
A net diameter of a mine auxiliary shaft in Menkeqing Mine was 10m ,the depth of the shaft was 755.45m and the shaft was constructed with full depth freezing method. The freezing depth of the shaft was 768m. The strata passed through by the shaft mainly were Cretaceous and Jurassic soft rock strata. Among the strata ,there were three aquifers. A main borehole+auxiliary borehole pattern meth‐od was applied to the freezing boreholes. A freezing of the mine shaft was officially started on Oct.17 , 2010 based on the refrigeration machine set turned on. On November 27 of the same year ,a freezing ring of the freezing wall was formed. On December 6 ,2010 ,a trial excavation was conducted in the shaft (after 49 days of the refrigeration machine set was turned on).On January 2 ,2012 ,the freezing operation of the shaft was stopped and on January 15 ,2012 ,the mine shaft was safely and successfully reach on the bottom of the mine shaft with the expected effect.
