岩石槽孔断裂机理及参数估计  

FRACTURE MECHANISM AND PARAMETER ESTEMATION ABOUT GROOVED HOLE IN ROCK

作　　者：谭卓英[1] 王思敬[2] 吴恒[1] 张永双[2] 

机构地区：[1]广西大学,南宁530004 [2]中国科学院地质研究所,北京100029

出　　处：《岩石力学与工程学报》1999年第5期573-577,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：中国科学院资源与生态环境研究重点项目;广西大学科学基金

摘　　要：运用弹塑性和断裂力学理论对圆孔和槽孔断裂机理作了全面分析， 对槽孔间及边孔与自由边界断裂面上主应力场的分布特征进行了分析、描述和计算， 建立了断裂判据， 得出了槽孔断裂的临界参数。Fracture mechanism of circle hole and grooved hole (r d =20 mm ) in rock are analysed through elastic, plastic and fracture mechanics theories. The principal stress field between the grooved holes and in fringe hole and its free boundary are analysed, calculated and described. Fracture criterion is established and its critical value is detemined.

关 键 词：岩石 槽孔断裂 参数估计 爆破 

分 类 号：TD235.11[矿业工程—矿井建设] TU452[建筑科学—岩土工程]