地下采场失稳的能量突变判断准则及其应用  

Criterion for Judging Energy Mutation in Destabilized Stope and Its Application

作　　者：杨官涛[1] 李夕兵[1] 王其胜[1] 李山存[1] 

机构地区：[1]中南大学资源与安全工程学院

出　　处：《采矿与安全工程学报》2008年第3期268-271,276,共5页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(50490274)

摘　　要：文章在有限元计算模拟地下采场开挖的实际工程设计中,根据岩石破坏与岩体工程整体失稳破坏的含义不同,提出不能将岩石材料的破坏与岩石工程系统的破坏用同样的破坏准则加以判断的观点.运用能量的原理,借助突变理论的方法,推导出了采场开挖前后系统失稳破坏的能量突变准则,通过计算开挖前后能量变化值,以判断采场系统失稳的可能性.通过对国内某铅锌矿的有限元模拟分析,证明所提出观点和判断准则是正确的,具有一定的实用价值.Based on the difference between the definition of rock failure and that of destabilized failure of rock body as an engineering system, we proposed the idea that the rock failure and the failure of rock body as an engineering system cannot be judged with the same criterion in caleulating and simulating underground stope and in engineering design. Based on principle of energy and mutation theory, we deduced the energy mutation criterion of destabilized failure of stope before and after being excavated to calculate the changing values before and after the excavation so as to judge the possibility of unstability of the system. The finite simulation of a certain lead-zinc mine in China shows that the idea and criterion we proposed are correct with a certain practical application value.

关 键 词：岩体工程 能量原理 能量突变 突变特征值 

分 类 号：TD853[矿业工程—金属矿开采]