百色水利枢纽地下厂房主变洞开挖和支护

文章结合具体工程施工案例,对如何在＂新奥法＂理论指导下高质量地开挖弱风化、两头软、中间硬、存在大量断面裂隙隐患且开挖后自稳能力差、易塌滑的围岩,如何高质量地开挖大跨度、高边墙特大洞室,如何在多洞室、多交叉、多层次作业的施工环境下进行组织施工等问题进行研究探讨。

Excavation and Timbering of Main-transformed Cavern of Underground Powerhouse of Baise Water Conservation Junction

Based on the specific construction cases,the article expounds how to excavate the hidden danger featured by weak weathering,both soft ends,tough middle part and with a lot of fracture cracks,and the rock featured by weak stability and easy to slide and collapse with highly quality,by the guidance of New Austrian Tunneling method.In addition,it also expounds how to excavate super large hole with large span and high wall,and how to proceed and organize the construction under the environment of multi-holes,multi-crosses and multi-layers.