摘要
针对四川省宁南县银厂沟矿和骑骡沟矿开采,采用三维有限差分程序FLAC3D法,建立了两种不同水平回采厚度的上向分层充填法开采的数值模拟模型,研究了采场上覆岩层的稳定性.研究表明:矿体厚度对采场的稳定性起着决定性作用;适当地选择采空区的暴露面积是控制采场围岩灾变的有效途径;三维有限差分法能较好地模拟上向分层充填法的开采动态,模拟结果也为类似条件下矿山的开发提供了重要的参考.
The 3D finite difference program, FLAC^3D, was used to establish two mining models of upward slicing and backfill method of different horizontal mining thickness for Yinchanggou and Qiluogou in Ningnan County, Sichuan Province, and the stability of the surrounding rock mass was analyzed. The results show that the mining thickness plays a decisive role in the stope stability, and that the appropriate goaf＇ s exposing area is an efficient approach to control the risk evaluation of the surrounding rock masses for stope,and that the 3 D finite difference program, FLAC^3D, is effective in modeling the mining process of upward slicing and backfill method and the modeling results can be used as the important reference for the development of metal mines under the similar conditions.
出处
《南华大学学报（自然科学版）》
2008年第4期46-50,共5页
Journal of University of South China：Science and Technology
基金
高等学校博士学科点专项科研基金资助项目(20060540001)
湖南省2007年度安全生产科技发展计划资助项目(07-18)
作者简介
章求才（1982－），男，江西黎川人，南华大学核资源与安全工程学院助教．硕士研究生．主要研究方向：岩土工程技术．
