构造裂隙大水矿床帷幕注浆工程试验及参数研究

构造裂隙大水矿床含水介质复杂多变,基建难度大,突水风险高,防治水技术难度大。借鉴岩溶大水矿床治水经验,设计采用矿山地面帷幕注浆技术,解决黄屯硫铁矿火山岩构造裂隙大水矿床地下水害。通过帷幕注浆生产性试验,从注浆前后帷幕体透水性、检查孔压水试验、注浆前后钻孔岩芯揭露情况分析,证明火山岩裂隙地层高压灌注水泥黏土浆后,大的构造导水通道及微细裂隙都能被浆液有效充填,注浆堵水效果显著,该方法可为同类矿床防治水工作借鉴。

Test and Parameters of Curtain Grouting for the Tectonic Fissured Water-rich Deposits

Due to the complex aquifer-medium among structural fissured water-rich deposits，there are great difficulties in construction and high risk of water gushing-out，so it is hard to realize the water prevention and control.As a reference from the water control experiences of water-rich deposit in karst，the curtain grouting technology for water control at the surface of mine is adopted to treat the groundwater disaster in fissured water-rich deposit at tectonic volcanic rocks in Huangtun pyrites.According to the full-scale test of curtain grouting，and through analyzing water permeability of curtain-grouting before and after grouting，the water pressure test，the drilling core exposure before and after grouting，it is proved that after the high-pressure grout injection for fractured formation in volcanic rocks，water-conducting channel with large structure and micro-fractures can be effectively filled，with remarkable grouting effect.So，this method can be as a reference for the same type of deposit.