云南水力发电2024，Vol.40Issue(z2)：93-98,6.DOI:10.3969/j.issn.1006-3951.2024.Z2.023
TB水电工程主厂房顶拱一孔到底开挖施工技术
Construction Technology for Excavating a Hole to the Bottom of Roof Arch of the Main Plant of TB Hydropower Project
张发斌 1吴帅 1曹富俊1
作者信息
- 1. 中国水利水电第十四工程局有限公司,云南 昆明 650041
- 折叠
摘要
Abstract
Through the analysis and summary of the excavation construction of the top arch of the underground powerhouse of TB hydropower station,a refined blasting technology of"one hole to the bottom"has been developed for the top arch of the underground powerhouse.By using explosives to fix bamboo strips tightly against the excavation contour,reserving 50mm of pesticide free bamboo strips at the bottom of the hole,staggered arrangement of charge structures,optimizing the density of line charges,and other measures,this article explores a set of construction methods for excavating large cross-section three center arc arch chambers from one hole to the bottom.It solves the problem of connecting blast holes between blasting rows,with good overall flatness and appearance quality.关键词
一孔到底/开挖施工/TB水电站/地下厂房Key words
one hole to the bottom/excavation construction/TB Hydropower Station/underground factory building分类
建筑与水利引用本文复制引用
张发斌,吴帅,曹富俊..TB水电工程主厂房顶拱一孔到底开挖施工技术[J].云南水力发电,2024,40(z2):93-98,6.
