Analysis of factors and countermeasures of mining subsidence in Kaiyang Phosphorus Mine  

作　　者：邓建 边利 李夕兵 赵国彦 王新民 

机构地区：[1]School of Resources and Safety Engineering, Central South University [2]School of Business, Central South University

出　　处：《Journal of Central South University of Technology》2006年第6期733-737,共5页中南工业大学学报（英文版）

基　　金：Projects(50574098, 50404010) supported by the National Natural Science Foundation of China; project(05jj10010) supported by the Hunan Provincial Natural Science Foundation of Distinguished Young Scholars

摘　　要：Ground crack and subsidence were investigated in Kaiyang Phosphorus Mine as an example. Contribution factors to cause ground crack and mining subsidence were studied, including mining method, mining depth and ore thickness and stope size, dip angle of orebody, geological structure, nature of overburden and water contents, and roof supports, etc. Countermeasures against cracks and subsidence were put forward. The uniaxial compressive strength of compounded phosphorus gypsum after 28 d of curing period was tested to be more than 1 MPa. Phosphorus gypsum can be used as materials for the backfill of stope. By comparison and numerical simulation, cut and fill mining method with middle-deep drilling holes and ore transportation by blasting force was selected as the optimum mining method in Kaiyang Phosphorus Mine.Ground crack and subsidence were investigated in Kaiyang Phosphorus Mine as an example. Contribution factors to cause ground crack and mining subsidence were studied, including mining method, mining depth and ore thickness and stope size, dip angle of orebody, geological structure, nature of overburden and water contents, and roof supports, etc. Countermeasures against cracks and subsidence were put forward. The uniaxial compressive strength of compounded phosphorus gypsum after 28 d of curing period was tested to be more than 1 MPa. Phosphorus gypsum can be used as materials for the backfill of stope. By comparison and numerical simulation, cut and fill mining method with middle-deep drilling holes and ore transportation by blasting force was selected as the optimum mining method in Kaiyang Phosphorus Mine.

关 键 词：mining subsidence ground crack cut and fill mining method Kaiyang Phosphorus Mine 

分 类 号：TD325.3[矿业工程—矿井建设]