| Analysis of factors and countermeasures of mining subsidence in Kaiyang Phosphorus Mine |
| |
| 作者姓名： | 邓建 边利 李夕兵 赵国彦 王新民 |
| |
| 作者单位： | School of Resources and Safety Engineering Central South University，School of Business Central South University，School of Resources and Safety Engineering Central South University，School of Resources and Safety Engineering Central South University，School of Resources and Safety Engineering Central South University，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China，Changsha 410083 China |
| |
| 基金项目： | 国家自然科学基金;湖南省自然科学基金青年基金 |
| |
| 摘 要： | 1 INTRODUCTION After useful mineral body has been mined and dragged out, mining goaf is formed and country rocks would probably lose original equivalence. When span of the goaf is long enough, even if the roof is hard and intact, the rock around the goaf would move towards the mining openings, and this movement would pass on to the adjoining rock mass until it reaches the surface and ground displacement can be observed. In other words, underground mining may cause ground cracks and surface…
|
| 收稿时间： | 18 March 2006 |
| 修稿时间： | 5 May 2006 |
Analysis of factors and countermeasures of mining subsidence in Kaiyang Phosphorus Mine |
| |
| Deng Jian , Bian Li , Li Xi-bing , Zhao Guo-yan and Wang Xin-min.Analysis of factors and countermeasures of mining subsidence in Kaiyang Phosphorus Mine[J].Journal of Central South University of Technology,2006,13(6):733-737. |
| |
| Authors: | Deng Jian Bian Li Li Xi-bing Zhao Guo-yan and Wang Xin-min |
| |
| Affiliation: | (1) School of Resources and Safety Engineering, Central South University, Changsha, 410083, China;(2) School of Business, Central South University, Changsha, 410083, China |
| |
| 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, 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. |
| |
| Keywords: | mining subsidence ground crack cut and fill mining method Kaiyang Phosphorus Mine |
| 本文献已被 CNKI 万方数据 SpringerLink 等数据库收录！ |
