摘要
庙沟铁矿地质条件复杂,主井井筒穿过的地层含多层富水含水层。井筒施工至-150m水平时,爆破施工后,出现突水,涌水量约120m3/h。由于排水能力不足,井筒水位迅速升至-15m标高,井内水深135m。为此,增大了井筒排水能力,降盘排水,并进行清淤作业;然后在工作面浇筑止浆垫,进行工作面预注浆,成功地治理了井筒突水。注浆后,井筒涌水量小于5m3/h,确保了井筒剩余工程、后续马头门和各硐室工程的安全顺利施工,保证了工程质量。
The geological conditions of the Miaogou Iron Ore are complex,and the strata through which the main shaft passes contains multiple water-rich aquifers.When the shaft was constructed to the level of-150 m,the water inrush occured after blast working,and the water inflow was about 120 m3/h.Due to insufficient drainage capacity,the shaft water level quickly rose to the elevation of-15 mand the depth of the water was about 135 m.For this matter,the shaft drainage capacity was increased,the hanging scaffold was dropped to drain water,and the silt-removing operation was carried out;then the grouting pad was poured on the shaft sinking face,the pre-grouting was done,and the shaft water inrush was successfully controlled.After grouting,the shaft water inflow was less than 5 m3/h,which ensured the remaining work of the shaft,the subsequent horsehead project and other chamber projects to be constructed safely and smoothly,the project quality was guaranteed.
作者
王绍群
张文锋
牛俊升
刘彬
WANG Shaoqun;ZHANG Wenfeng;NIU Junsheng;LIU Bin(Luan County Changyu Iron Ore Co.,Ltd.,HBIS Group,Tangshan 063700,China)
出处
《建井技术》
2019年第1期23-26,共4页
Mine Construction Technology
关键词
立井
突水
工作面预注浆
止浆垫
滤水层
vertical shaft
water inrush
pre grouting at shaft sinking face
grouting pad
water filter layer
