摘要
分析了抚顺西露天矿的地质背景,对西露天矿北帮边坡进行稳定性数值分析,并对西露天矿地质灾害进行评价和变形区划分。分析结果表明,矿区的地质灾害主要受断层,软弱岩体,强降雨以及矿震等的影响;边坡存在相当大塑性区,边坡表坡局部存在较大变形,随着井采开采的推进边坡塑性区将增大,地表沉降位移增量呈增加的趋势;对地质灾害影响的区域应根据变形情况逐渐实施搬迁。最后指出应对北帮边坡岩体变形的时效性问题及趋势进行预测,并做好地质灾害防治工作。
Analyse the geological background of Fushun west open-pit mine; use the method of numerical analysis to analyse the stability of the north side slope and geological disasters are evaluated and classified based on the deforming zone. The analysis results show： （1） the geological disasters of mining area mainly affected by faults, weak rock mass, heavy rainfall and mine earthquakes, etc. ; （2） there are considerable plastic zone in the slope and large deformation on the surface of the slope ; （3） the plastic zone and the displacement increment of ground surface will be increased as the propulsion of underground mining. The area which affected by the geological hazard should be gradually moved based on the deformation condition. At last, it points out the time-based questions and deformation trends should be forecasted about rock mass of north slope and the geological disaster prevention and control work shoud be done perfectly.
出处
《中国地质灾害与防治学报》
CSCD
2012年第4期86-93,共8页
The Chinese Journal of Geological Hazard and Control
基金
国家重点基础研究发展规划(973)项目(2010CB731501 2009CB724605)
国家自然科学基金资助项目(41027001)
中国科学院知识创新工程重要方向项目(KZCX2-YW-JS102
YZ200912)
中国地质调查局工作项目(1212011220136)
关键词
露天矿
地质灾害
边坡稳定
数值模拟
地灾评估
open-pit mine
geological disaster
slope stability
numerical simulation
geological disaster assessment
