金寨抽水蓄能电站地下厂房顶拱开挖支护施工

Excavation and support construction of underground powerhouse crown arch in Jinzhai pumped storage power station

基于金寨抽水蓄能电站地下厂房的围岩情况,介绍了地下厂房顶拱的开挖支护施工要点,论述了顶拱的开挖方式和锚杆注浆工艺,并对其检测结果进行了总结,对类似工程有一定的参考价值。

The surrounding rock condition of underground powerhouse based on Jinzhai pumped storage power station,introduces the excavation and support construction of underground powerhouse crown arch,discusses the excavation method of crown arch and anchor grouting technique,and summarized its detection results,which has certain reference value for similar projects.