基于折线滑动的岩质边坡非概率可靠性分析  

Non-probabilistic Reliability Analysis of Rock Slope Based on Polygonal Line Sliding

作　　者：王雨波[1,2] 杨永生[1,2] 

机构地区：[1]中钢集团马鞍山矿山研究院有限公司,安徽马鞍山243000 [2]金属矿山安全与健康国家重点实验室,安徽马鞍山243000

出　　处：《金属矿山》2014年第12期185-187,共3页Metal Mine

摘　　要：矿山高陡边坡稳定性研究是露天开采中的一个重要研究课题,由于边坡岩土体构成复杂,用传统的定值求解安全系数的方法已经不能很好地描述岩土体参数的不确定性。通过对折线滑动破坏模式的分区进行相关岩石室内试验,并根据实际工程岩体的情况对室内岩石参数进行强度折减,同时对边坡体不确定性参数进行区间描述。根据折线滑动的破坏模式,结合传递系数法,推导折线滑动非概率可靠度指标求解的功能函数,结合不同的区间解法对功能函数进行求解,得出最终的非概率可靠度指标,从非概率的角度对边坡可靠性进行研究分析。Stability study of high-steep slope is an important research topic in surface mining. Because of the complex compose of the rock and soil mass,the uncertainty of the parameter of the rock and soil mass can not be precisely described by the traditional safety factor method. Through the rock laboratory test on the polygonal line sliding failure mode partition,strength reduction on the rock laboratory test parameter was made according to the actual situation of the rock mass in this slope engineering. At the same time,the uncertainty parameter of the rock and soil mass of the slope was described. According to the failure mode of polygonal line sliding,combing with the transfer coefficient method,the performance function for solving the nonprobabilistic reliability index of the polygonal line sliding has been deduced. Combining with the different interval value,the solution of the function will be obtained,and the final non-probabilistic reliability index is got as well. From the perspective of the non-probability,the slope reliability analysis has been studied.

关 键 词：边坡可靠性 非概率可靠性 折线滑动 区间理论 

分 类 号：TD854.6[矿业工程—金属矿开采]