摘要
应用数值模拟技术对新疆东戈壁露天矿边坡不同排土场安全距离问题进行了真实有效地分析,直观地再现了边坡应力和位移变化,并得到边坡的稳定安全系数。结果表明:在没有排土场作用下,露天坑边坡处于相对稳定状态,当排土场安全距离为50m时,安全系数急剧减小到0.68,随着排土场安全距离的增大,安全系数随之增大。当排土场安全距离为300m时,边坡安全系数达到0.99,当安全距离大于400m时,排土场几乎不会对边坡的稳定性造成影响。数值模拟技术对边坡排土场安全距离的确定具有重要的指导意义,为东戈壁露天矿边坡开挖提供了有效的技术支撑。
The slope stress and displacement variation has been reflected and the stability of slope safety factor has been got through the application of numerical simulation technology of different dump safety distance of slope.The result in the absence of dumping effect that the open pit slope is in relatively stable state.And the slope safety factor is reduced sharply to 0.68 when the dump safety distance is 50m,And the slope safety factor is increased with increasing dump safety distance.The slope safety factor is 0.99 when the dump safety distance is 300m When the safety distance is greater than 400m,dump have hardly influence on slope stability.The numerical simulation to the determination of dump safety distance is of important guiding significance.It provides effective technical support of Donggebi open-pit mine excavation.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2012年第1期104-108,共5页
Journal of Wuhan University of Technology
基金
国家重点研究发展计划(973)(2010CB732004)
关键词
露天边坡
排土场
数值模拟
安全系数
边坡稳定
open-pit slope
dump
numerical simulation
safety factory
slope stability
