四川锦屏山隧道岩爆综合防治施工技术

Construction Technology of Comprehensive Prevention for Rock Burst in the Jinpingshan Tunnel in Sichuan

摘要:

锦屏山隧道工程是锦屏水电枢纽工程的关键性控制施工项目，隧道地处我国西南高地应力区，全长约17.5 km，隧道最大埋深约为2375 m，埋深大于1500 m的地段长度约12875 m。通过对锦屏山隧道现场岩爆特征的分析总结和研究，介绍了锦屏山隧道岩爆独特的工程特点和综合防治施工技术。

Abstract:

The Jinpingshan tunnel project is the key of Jinping hydropower complex, which is located in the high geo-stress area of south-west China with a whole length of about 17.5km and the maximum depth of the tunnel is about 2375m. The length of the section with buried depth over 1500m is about 12875m. The paper introduces the unique characteristics of the project and the comprehensive prevention construction technology by the analysis and study on the rock burst characteristics in Jinpingshan tunnel.