摘要
为了安全、经济地回收矿柱并实施深部开采,在数值分析的基础上,提出了一种急倾斜矿体的采空区处理与卸压开采方法 ,并用ANSYS数值模拟确定了采空区处理及卸压开采的施工参数。结果表明,在下盘脉外巷道离采空区边缘的水平距离为10 m时,上盘脉外巷道离采空区边缘的水平距离取20 m;在巷道底板隔断开采的深度不超过20 m;必须从上、下盘脉外巷道同时向采空区围岩实施V型松动爆破;可只在上盘巷道底板进行隔断开采。本文对青海省都兰县拉克贡玛铅锌矿采空区的处理与卸压开采方法进行了研究分析。
In order to safely and economically recover the pillars and carry out deep mining,based on the numerical analysis,a method of goaf treatment and pressure relief mining for a steeply inclined ore body is put forward,and the construction parameters of the mined out area treatment and the pressure relief mining are determined by ANSYS numerical simulation.The results show that in the footwall rock tunnel from the goaf edge of the horizontal distance is10m,the horizontal distance between the hanging wall rock tunnel from the goaf edge of20m;in the depth of mining roadway floor partition does not exceed20m;must be from upper and lower roadway veins to goaf surrounding rock.Application of V type loose blasting;only the partition in the hanging wall mining roadway floor.The Iraq Dulan County of Qinghai province from lead-zinc mine goaf treatment and pressure relief mining methods are analyzed.
作者
王德金
宁雨鹏
倪曦
WANG De-jin;Ning Yu-peng;NI Xi(Shandong Third Geological and Mineral Exploration Institute,Yantai 264000,China)
出处
《世界有色金属》
2018年第1期152-153,共2页
World Nonferrous Metals
关键词
铅锌矿采空区处理
卸压
开采方案
the treatment of lead-zinc mine goaf
pressure unloading
mining scheme
