摘要
隧洞断面形式的合理选择对于引水隧洞的安全有效运行具有重要意义,合理的断面设计对于工程安全、施工方法、施工工期等影响极大。针对引汉济渭二期工程黄午隧洞,拟定圆拱直墙形断面、马蹄形断面和平底马蹄形断面,采用理论分析、数值模拟和工程类比等分析方法,从过流能力、结构受力以及工程施工等方面进行综合比选,结果表明,3种断面形式均满足过流与结构受力要求,但圆拱直墙形断面在施工条件以及施工工期方面具有独特的优势。因此,确定黄午隧洞断面形式采用圆拱直墙形。
Reasonable selection of tunnel section type is of great significance for safe and effective operation of diversion tunnel.Reasonable section design has great influence to the project safety,construction method and construction period.In view of the Huangwu tunnel at the northern foot of Qinling Mountains in PhaseⅡof Hanjiang-to-Weihe River Water Diversion Project,the types of circular arch straight wall section,horseshoe section and bottom horseshoe section were developed.Theoretical calculation,numerical simulation and engineering analogy were used to conduct comprehensive comparison and selection from the aspects of flow capacity,structural stress and engineering construction.The results show that the three section types all meet the requirements of overflowing and structural stress,but the circular arch straight wall section has unique advantages in terms of construction conditions and construction period.Therefore,the circular arch straight wall shape is adopted to determine the section type of Huangwu tunnel.
作者
雒少江
雷升云
LUO Shaojiang;LEI Shengyun(Hanjiang-to-Weihe River Water Diversion Project Construction Co.,Ltd.,Xi’an 710100,China)
出处
《人民黄河》
CAS
北大核心
2021年第6期118-121,共4页
Yellow River
基金
2017年陕西省水利科技计划项目(2017slkj-27)。
关键词
引水隧洞
断面形式
安全系数
引汉济渭工程
diversion tunnel
sectional form
safety factor
Hanjiang-to-Weihe River Water Diversion Project
