竖井围岩-支护系统稳定性分析的最小安全系数法  

Minimum safety factor method for stability analysis of vertical shaft surrounding rockmass and supporting system

作　　者：杨官涛[1] 李夕兵[1] 刘希灵[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《煤炭学报》2009年第2期175-179,共5页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50490274);国家重点基础研究发展计划(973)基金资助项目(2007CB209402)

摘　　要：根据弹塑性力学及围岩-支护相互作用原理,分析了竖井稳定性,推导了竖井围岩与支护的应力、位移以及支护厚度的计算公式.根据泊松比的大小,判断围岩周边最大主应力的方向.结合Drucker-Prager强度准则和安全系数,建立了安全系数评价法,通过FISH语言实现了求解,为围岩稳定安全范围、支护方位以及支护厚度提供了合理的参数.Based on plastoelasticity mechanics and surrounding rock-supporting principle, the stability of shaft was analyzed, and calculation formula of stress, displacement and support thickness were derived. Judged the biggest main stress direction of rockmass according to Poisson＇ s ratio, and developed a new safety factor evaluating method based on engineering safety factor and Drucker-Prager rule. It＇ s worked out by FISH and provided reasonable pa- rameters of rockmass stability range, supporting section and thickness.

关 键 词：竖井 支护厚度 围岩稳定 最小安全系数法 

分 类 号：TD322.4[矿业工程—矿井建设]