岩爆及采矿诱发岩体失稳破坏过程数值模拟新方法  

NEW NUMERICAL SIMULATION METHOD OF ROCK FAILURE PROCESS UNDER ROCKBURST AND EXCAVATING

作　　者：乔河[1,2] 唐春安[1,2] 李晓 陈荣德[1,2] 

机构地区：[1]中科院地质所工程地质力学开放试验室 [2]抚顺老虎台煤矿

出　　处：《地质力学学报》1999年第1期60-64,共5页Journal of Geomechanics

基　　金：国家杰出人才基金;中科院地质所工程地质力学开放试验室开放课题

摘　　要：岩石介质的宏观非线性主要是由非均质性和各向异性造成的，应用新的数值计算软件ＲＦＰＡ（２Ｄ）——基于岩石宏观非线性行为可能是由具弹脆性特征的细观微元体不断破裂造成的，造成微元体不断破裂（并非某一时刻同时破裂）的原因是微元体材料性质（微元体强度、弹性模量和泊松比等参数）的非均匀性，是一个数学上相对简单但能充分考虑岩石介质复杂性的方法，对采动引起岩体失稳破坏的全过程进行了数值模拟研究，表明应用ＲＦＰＡ（２Ｄ）是切实可行的。The nonlinear deformation of rock is caused by heterogeneity and anisotropy.A newly developed numerical code,RFPA(2D)(Rock Failure Process Analysis),is applied to study of failure process of rock under excavating,and macroscopic non linear behavior of rock may be caused by continually fracturing of micro element with elastic brittle character.The reason which causes micro element continually fracturing(fracturing not at the same time)is the non homogenous character of micro element material,such as microelement's strength,elastic modulus and Poisson's ratio,etc.RFPA(2D) is a relative simple compater method on math,but the complication of rock material is considered enough.

关 键 词：岩体失稳 非均质性 数值模拟 岩爆 采矿 

分 类 号：TD325.1[矿业工程—矿井建设]