层间剪切带对某水电站导流洞围岩稳定性的影响

Influence on the Stability of Hydropower Station Diversion Tunnel Surrounding Rock by Interlayer Shear Zone

基于现场调查,分析了某水电站层间剪切带特性,总结了其对导流洞稳定性的影响规律。通过数值计算,分析了层间剪切带对左岸中导洞及导流洞的影响,以及对右岸块体稳定性的影响,为确定该水电站导流洞的合适支护方案提供了依据。

Based on field investigation,the characteristics of a hydropower station interlayer shear zone is analyzed and its influence on the stability of the diversion tunnel is summarized.By numerical calculation,the influence of interlayer shear zone on the left bank pilot tunnel and the diversion tunnel are analyzed,as well as the stability of the right bank block.This study provides the basis for determining the appropriate supporting scheme of the diversion tunnel of hydropower stations.