全长注浆岩石锚杆与围岩体相互作用下的锚固机理研究  

Study on the Reinforcement Mechanism of Fully Grouted Rock Bolt Considering the Interaction between Bolt and Wallrock Mass

作　　者：朱训国[1,2] 

机构地区：[1]辽宁省大连市大学材料破坏数值计算中心,116622 [2]大连理工大学

出　　处：《金属矿山》2009年第9期24-28,共5页Metal Mine

基　　金：国家自然科学基金项目(编号:50679015)

摘　　要：首先根据锚固体与围岩体界面遵循莫尔-库仑屈服准则建立了注浆岩石锚杆的剪应力的分布函数。在此基础上,根据围岩体与注浆岩石锚杆相互作用机理,建立了围岩体中注浆岩石锚杆的实际受力下的剪应力的分布函数和轴向载荷的分布函数。同时,根据中性点的概念,建立了中性点的计算公式。最后,详细分析了影响锚杆实际受力的各种因素对其受力的影响,为分析其锚固机理提供了一定的理论基础。The shear stress distribution function of grouted rock bolt is set up based on the interface between bolt and wallrock mass and following the Coulomb-Mohr yield criterion. On this basis, the distribution functions of the shear stress and axial load of the grouted rock bolt in wallrock under the actual stress are set up based on the mechanism of interaction between wallrock mass and grouted rock bolt. Meanwhile, a computing formula of neutral point is set up according to the concept of neutral point. The effects of various factors on the actual stress of bolt are analyzed in detail, providing a certain theoretical basis for analyzing its reinforcement mechanism.

关 键 词：岩石力学 注浆岩石锚杆 锚固机理 

分 类 号：TU452[建筑科学—岩土工程] TS193.2[建筑科学—土工工程]