摘要
海沟金矿采用空场法进行采矿生产 ,十几年开采后留下约 10 0 0× 2 70m的采空区 ,对生产安全构成相当大的危险。本文通过现场工程地质调查研究 ,根据地质力学理论将围岩区的节理裂隙发育规律与地质构造关系进行了系统分析 ,初步判定该矿区围岩受多期多方向和多序次构造影响 ,主要张扭性断裂和节理走向与矿脉走向一致 ,对采场稳定性、矿山后期开采和采空区的处理将产生不利影响 。
In the past ten years or more,Haigou Gold Mine conducted open stope mining,leaving 1000×270m 2 of mined out area which threatened safe production greatly.After in situ engineering geologic investigation,the systematic analysis of the relation between the regularity of joint fissure development in country rock area and the geologic structure was made with the help of the theory of geologic mechanics.It was estimated initially that the country rock was influenced by multi staged,multi directional and multi orderly structure.The tensional fracture and the identity of joint trend and ore vein run were unfavorable to the stope stability.mining operation and treatment of mined out area,so the country rock must be supported if necessary.
出处
《黄金》
CAS
2001年第5期6-10,共5页
Gold
