程潮铁矿残矿回收引起的地表变形规律及安全性分析  

Surface Deformation and Security Analysis in Chengchao Iron Mine due to the Residual Ore Recycling

作　　者：商欢迪 王平[1] 陈顺满[2] 杜宇翔[1] 刘昶[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]北京科技大学土木与环境工程学院,北京100083

出　　处：《矿业研究与开发》2017年第1期93-97,共5页Mining Research and Development

摘　　要：程潮铁矿残矿的回收条件复杂,在井下形成较多采空区,影响地表建筑物设施的安全性,因此,采用FLAC3D软件模拟分析残矿回收对地表沉降、水平位移、地表水平变形、倾斜变化和曲率变化的影响。结果表明,地表最大沉降值、最大水平变形值、最大倾斜及最大曲率分别为15.894cm,0.045mm/m,0.12756mm/m和0.00212mm/m^2,均远小于建筑物保护等级的要求,同时工程现场监测的数据与数值模拟分析的结果基本吻合,表明残矿回收对地表的安全性影响很小。Chengchao Iron Mine, with the complex geology conditions of residual ore, existed a lot of goals in the underground, which had threatened the safety of buildings facilities. Therefore, the influences of residual ore recycling on the surface subsid- ence, horizontal displacement, surface horizontal deformation, tilt change and curvature change were simulated and analyzed. The results showed that the maximum values of surface subsidence, horizontal deformation value, tilt and curvature were re- spectively 15.894 cm, 0.045 ram/m, 0.12756 mm/m and 0.00212 mm/m2 , which were all far lower than the requirements of buildings protection level. Meanwhile, the monitoring data in engineering field was generally consistent with the results of nu- merical simulation, and it proved that the residual ore recycling had little influence on the surface safety.

关 键 词：残矿回收 地表沉降 数值模拟 安全性分析 

分 类 号：TD853.391[矿业工程—金属矿开采]