米亚罗水电站有压引水隧洞衬砌设计探讨

Design of Pressure Headrace Tunnel Lining at Miyaluo Hydropower Station

结合阿坝州理县米亚罗水电站有压引水隧洞的衬砌设计、优化及各种观测分析结果,阐述了对隧洞围岩进行科学分类、分别采用适合的衬砌方法,在保证洞室安全稳定的情况下,不仅能缩短施工工期,而且能有效降低工程造价,取得安全、经济的综合效益。

According to pressure headrace tunnel lining design,optimization and various observation analysis results at Miyaluo hydropower station in Li county of Aba Prefecture,scientific classification of tunnel surrounding rocks and proper lining methods are described.Under tunnel safe and stable conditions,not only construction period is shorten,but also project cost can be reduced effectively,achieving comprehensive benefits of safety and economy.