加锚节理岩体裂纹扩展失稳的突变模型研究  

CATASTROPHE MODEL OF CRACK PROPAGATING IN BOLT-SUPPORTED JOINTED ROCKMASS

作　　者：李术才[1] 陈卫忠[1] 朱维申[1] 王书法[1] 

机构地区：[1]中国科学院武汉岩土力学研究所

出　　处：《岩石力学与工程学报》2003年第10期1661-1666,共6页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金面上项目(50004007);国家自然科学基金重点项目(59939190);国家重点基础研究发展规划(973)项目(2002CB412705);国家自然科学基金杰出青年基金资助项目(B类)(50028403)。

摘　　要：为弄清裂纹扩展性态与岩体稳定性的关系及锚杆的增韧止裂作用,建立了压剪应力状态下加锚节理面抗剪强度与锚固参数之间的关系,并用突变理论建立了加锚节理面压剪应力状态下分支裂纹扩展的突变模型,对于全面了解裂纹扩展过程及评价岩体稳定和提前合理采取加固措施具有重要意义。In order to see into stability of rock mass during crack propagation, and the fracture toughness increment of crack by bolt which will prevent propagation of crack, the relationship of shear strength of bolted joint plane and bolting parameters in compressive-shear stress state is set up. Furthermore, sub-crack propagation mechanics model is developed on the basis of catastrophe theory, which is significant for understanding crack propagation process, assessing stability of rockmass, and taking reasonable bolting measures in advance.

关 键 词：岩石力学 加锚节理面 抗剪强度 锚固 突变理论 

分 类 号：TU452[建筑科学—岩土工程] TU458.4[建筑科学—土工工程]