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

来源期刊：中南大学学报(英文版)2006年第6期

论文作者：邓建 李夕兵 赵国彦 王新民

文章页码：733 - 737

Key words：mining subsidence;ground crack;cut and fill mining method; Kaiyang Phosphorus Mine

Abstract: 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,dipangle 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.