大山口二级水电站引水隧洞围岩加固稳定计算分析  

The Calculation and Analysis of the Reinforcement and Stability for the Dashankou Hydropower Station

作　　者：赵松琴[1] 

机构地区：[1]三峡大学土木与建筑学院,443002

出　　处：《灾害与防治工程》2012年第1期61-68,共8页Disaster and Control Engineering

摘　　要：结合大山口二级水电站工程地下洞室围岩265～365m洞段，在场区地勘资料分析的基础上，建立了能够反映研究区地貌、岩体结构和地应力条件的三维计算模型，模拟了地下洞室初始、开挖、卸荷、衬砌加固、锚杆加固、衬砌锚杆加固等六种不同工况的围岩应力、位移、塑性区的分布情况，并着重对比了几种不同的加固方式的效果。Taking underground surrounding rock mass 265m--365m hole section of the Dashankou hydropower station as an example, this paper, based on the analysis of field ge- ological survey and exploration data, establishes a 3D computation model reflecting the landscape, the rock mass structure and geostress in the area. It simulates the distribution of the surrounding rock stress, displacement and plastic zone in six different modes of the underground cavern： initiation, excavation, unloading, lining reinforcement, anchor reinforcement, lining anchor reinforcement. Emphatically, the effects of the different rein- forcement modes are compared.

关 键 词：地下洞室 围岩稳定 衬砌加固: 锚杆加固 衬砌锚杆加固 

分 类 号：P[天文地球]