程潮铁矿崩落法开采对上覆岩体变形的影响研究  

Study on influence of caving mining on overlying rock mass deformation in Chengchao Iron Mine

作　　者：李吉民[1,2] 吴文博 张聪瑞 陈诚 韩亚民 LI Jimin;WU Wenbo;ZHANG Congrui;CHEN Cheng;HAN Yamin(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan Hubei 430070,China;不详)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]武钢资源集团程潮矿业有限公司,湖北鄂州436051 [3]关键非金属矿产资源绿色利用教育部重点实验室,湖北武汉430074

出　　处：《工业安全与环保》2024年第3期50-55,共6页Industrial Safety and Environmental Protection

摘　　要：针对程潮铁矿开展工程地质调查,采用离散元分析软件UDEC建立其二维地质剖面模型,在假设其上部水平矿房未开采的条件下,模拟了程潮铁矿无底柱分段崩落法开采-480m、-500m相邻分段的过程,研究单一分段及相邻分段开采导致的围岩“冒落带、导水裂隙带”的分布规律及范围,探索程潮铁矿单分段矿房开采时其上覆岩体形成的导水裂隙带高度范围y随采长x的变化函数,分析无底柱分段崩落法不同分段矿房开采对于上覆岩体变形及影响机理,为类似开采技术条件矿山安全生产提供参考。Engineering geological survey is carried out for Chengchao Iron Mine,and a two-dimensional geological profile model is established by using discrete element analysis software UDEC.Under the assumption that the upper horizontal chamber is not mined,the sub-level caving without bottom pillar mining process of adjacent sub-sections of Chengchao Iron mine-480 m and-500 m is simulated.This paper studies the distribution law and scope of"caving zone and water-conducting fracture zone"in surrounding rock caused by mining of single sublevel and adjacent sub-level,explores the variation function of height range y of water-conducting fracture zone formed by overlying rock mass with mining length x during mining of single sublevel chamber in Chengchao Iron Mine,and analyzes the de-formation and influence mechanism of different sublevel chamber mining without bottom pillar on overlying rock mass.It provides reference for the safety production of mines with similar mining technical conditions.

关 键 词：离散元分析 UDEC 无底柱分段崩落法 岩体变形 应力演化 三带高度 

分 类 号：TD853.36[矿业工程—金属矿开采] TD325[矿业工程—矿山开采]