水布垭枢纽地下厂房围岩稳定及锚固分析  

Numerical analysis on stability and grouted bolts of surrounding rock of Shuibuya underground power plant

作　　者：杨强[1] 杨晓君[1] 周维垣[1] 

机构地区：[1]清华大学水利水电工程系,北京100084

出　　处：《水力发电学报》2005年第4期11-15,20,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金(50279016);973项目(2002cb412708)

摘　　要：本文采用一种特殊的岩体灌浆锚杆有限元数值模拟方法,并结合水布垭枢纽工程,对其地下厂房2#机组剖面进行了二维非线性有限元分析,主要研究了主厂房洞室开挖过程中及开挖完成后围岩的应力状态、位移值以及塑性区分布范围,重点分析了喷锚支护措施的加固效果。The construction and excavation process of underground power plant of the Shuibuya project are analyzed by using nonlinear 2-D FEM. The numerical model of the grouted bolt used in the computation is described. The pattern of deformation caused by excavation and the stress state in surrounding rock of the underground plant chamber under complex geological conditions are studied. The distribution of plastic region, the stability of surrounding rock and the effect of reinforce methods of shotcrete bolt support are studied.

关 键 词：岩体力学 围岩稳定 BOLT单元 灌浆锚杆 地下厂房 

分 类 号：TV223.3[水利工程—水工结构工程]