摘要
采矿引起的岩体变形或移动是广大科研和工程技术人员所关心的重要课题。本文基于经典概率统计原理,讨论岩土边坡岩体的变形破坏及失稳概率问题,导出了岩体变形破坏的理论公式,并给出了数值计算方法。文中根据Fuzzy数学理论,采用Fuzzy聚类分析、Fuzzy综合评判及Fuzzy贴近度方法,对岩土力学参数进行综合评价和选择。
Because of complex nature of rock mass in open-pit mines,it is difficult to accurate measure various factors which have great effect on the slope stability in open-pit mines. In this paper.failure problems of rock slopes are presented and discussed according to the practical situation of the mining engineering in open-pit mines. To calculate the rock mass deformation failure probability of rock slopes,we regarded the rock mass as the macroscopical homogeneous amd the isotropic medium,amd the mechanical and mathematical models in which the stability degree of rock slopes were established, and thus a new numerical method for analysing the failure probability of rock slopes is derived. The numerical method can be used to the quanta calculation of the failure probability of rock slopes and can provide a scientific basis for evaluating the stability of rock slopes. According to theory of Fuzzy mathematics,presented in this paper is a oimplified practical.nethod to determine the mechanical parameters (such as C,Φ, ets. ). In this paper,the following four Fuzzy mathematical methods have been used to determine engineering parameters; 1) The membership function of the Fuzzy subset; 2) the Fuzzy Cluster Analysis; 3) the Fuzzy Comprehensive Evaluation; 4) the close degree between Fuzzy sets.
基金
中国科学院青年奖励研究基金
