摘要
采用有限元方法,研究位于安家岭露天矿北帮下部井工采动,对露天边坡的影响和稳定性变化规律。结果表明,井工采动过程中,露天边坡出现渐变型蠕动变形,变形区域在1330水平以上,表现为向边坡临空面的位移;模拟过程中极限平衡方法稳定性为1.280,有限元方法中稳定性从1.333降低至1.119,所以极限平衡方法分析由应力引起边坡变形时存在不足。
The article adopts the finite element method to research the effect of underground＇ mining under the north slope on the open-pit slope and the changing law of stability in Anjialing Open-pit Mine. The results show that during underground mining process, the open-pit slope emerges gradient creep deformation, whose deformation area is above the 1330 level and its phonomenon is displacement to the slope free face. In the process of simulation, the stability of limit equilibrium method is 1.280. In the finite element method, the stability reduced from 1.333 to 1.119. The limit equilibrium method analyzing slope deformation caused by stress has shortcomings.
出处
《露天采矿技术》
CAS
2015年第8期27-30,共4页
Opencast Mining Technology
基金
国家自然科学基金面上资助项目(51274122)
国家自然科学基金煤炭联合基金资助项目(U1361211)
关键词
边坡稳定性
露天矿边坡
井工采动
有限元方法
slope stability
open-pit mine slope
underground mining
finite element method
