四川水力发电2024，Vol.43Issue(3)：124-128,5.
不同地质条件下特大断面洞室上层开挖方式的探讨
Discussion on Excavation Methods of the Upper Layer of Extra-large Cross-section Caverns Under Different Geological Conditions
杨红富 1包秀花1
作者信息
- 1. 四川二滩国际工程咨询有限责任公司,四川 成都 611130
- 折叠
摘要
Abstract
The excavation of extra-large section underground caverns is an important part of modern large-scale hydraulic buildings,wherein the upper excavation is the key to the excavation of extra-large section under-ground cavern.The upper excavation mainly includes the full section excavation method,the middle pilot tun-nel excavation method,the symmetrical semi-pilot tunnel excavation method,the asymmetrical semi-pilot tun-nel excavation method,etc.The selection of appropriate excavation mode in construction stage can make the construction safety,progress be effectively guaranteed.This paper mainly discusses the application of the full-section excavation method and the middle pilot tunnel excavation method in the flood discharge and spillway tunnel construction in Lawa hydropower construction,respectively,and intends to demonstrate the influence of different excavation methods on the construction quality,construction safety and stability of the caverns,which is for reference only.关键词
特大断面/开挖方式/施工措施/围岩地质Key words
Extra-large section/Excavation method/Construction measures/Surrounding rock geology分类
土木建筑引用本文复制引用
杨红富,包秀花..不同地质条件下特大断面洞室上层开挖方式的探讨[J].四川水力发电,2024,43(3):124-128,5.
