锚筋桩施工技术在锦屏二级水电站引水隧洞溶洞段的应用

Anchorage Pile in Jinping hydropower section of the application of tunnel cave

雅砻江锦屏二级水电站西端4#引水隧洞引(4)0+330m～0+252m洞段开挖后揭露的围岩为溶洞堆积体,存在较多空腔,局部空腔充填黄色泥状胶结物,整体稳定性较差。本文主要介绍锚筋桩技术在溶洞段施工中的应用。

Jinping Ⅱ hydropower station cited the western end of Tunnel # 4（4）0＋330m～0＋252m tunnel section to expose the rock excavation for the cave accumulation, there are more cavity, the cavity filled with yellow mud Local Like cement, the overall stability of the poor. In this paper, Anchorage piles in the cave section of Construction.