摘要
尾矿库下压覆矿体的开采,要根据矿床的赋存条件,采取相应的回采工艺,使地下回采工作对地面建构筑物的变形控制在允许范围内,同时应防止尾矿涌入对井下开采安全造成影响。通过对某矿区现场勘探调查以及已有相关地质资料的整理分析,采用理论分析及Midas GTS NX计算机数值模拟计算方法,研究了该矿尾矿库下压覆矿体在地下开采过程中产生的岩层移动和变形对尾矿库及坝体的影响,确定了安全保护岩柱范围和合理的岩层移动角,并为下一步进行地下开采提出了相应的安全对策措施,为矿山在解决同类问题时提供了参考。
In the mining of overburden ore body,the occurrence conditions of deposit should be considered so as to adopt the corresponding mining techniques to ensure that the deformation of ground structures in the underground caused by mining operation is controlled within the allowable range,at the same time,the influx of tailings should be prevented from af⁃fecting safe underground mining.Through the field investigation and analysis of the existing geological data in a mining area,the theoretical analysis and Midas GTS NX computer numerical simulation calculation method were used to study the influ⁃ence of strata movement and deformation on tailings pond and dam body caused by underground mining of overburden ore body under tailings pond.The scope of safety protection rock pillar and reasonable movement angle of rock stratum were deter⁃mined.Besides that,corresponding safety countermeasures were proposed for underground mining in the next step,which pro⁃vides reference for solving similar problems in mines.
作者
蒋京名
郭家能
王志
JIANG Jingming;GUO Jianeng;WANG Zhi(Hunan Labour Protection Institute of Nonferrous Metals,Chagnsha 410014,China)
出处
《金属矿山》
CAS
北大核心
2021年第4期191-196,共6页
Metal Mine
关键词
尾矿库
压覆矿体
隔离层
充填采矿
岩层移动边界角
tailings pond
overlying ore body
isolation layer
filling mining
boundary angle of strata movement
