辽宁工程技术大学学报（自然科学版）2017，Vol.36Issue(3)：249-254,6.DOI:10.11956/j.issn.1008-0562.2017.03.005
准东露天煤矿首采区提前转向边坡稳定性
The first mining area of Zhun Dong open-pit coal mine research on changing the direction of slope stability in advance
摘要
Abstract
In order to solve the problems of open-pit coal mine of the first mining area about the reasonable slope engineering location,advancing drawdown level and the reasonable slope shape,this paper used the rigid limit equilibrium method and numerical simulation,combined with the first mining area problems in Zhun Dong open-pit coal mining,discussed the relationship with slope deep level and reasonable slope angle,provided the drawdown level positon in advance,analyzed the breakage types and the plasticity area,supplied the strong evidence of transformation realm and finishing the production.The results show that the reasonable slope angles are not changing after drawdown to 286 level position.The dropping depth to extract at the north of western slope is at 350 level position.The failure mode of slope rock mass is tension-shear composite damage.The local rock mass damage caused by the stress concentration from slope toe after slope excavation has become the inducing element when the slides starting.关键词
极限平衡/采区转向/安全系数/数值模拟/应力集中Key words
limit equilibrium/mining area transition/safety factor/numerical simulation/stress concentration分类
矿业与冶金引用本文复制引用
曹兰柱,倪世豪,王东,王琰舜,刘忠红,高金龙..准东露天煤矿首采区提前转向边坡稳定性[J].辽宁工程技术大学学报（自然科学版）,2017,36(3):249-254,6.基金项目
国家自然科学基金(51104084,51474119) （51104084,51474119）
国家自然科学基金重点项目(U1361211) （U1361211）
高等学校博士学科点专项基金(20122121110003) （20122121110003）
