摘要
隧洞工程设计中,断面形式合理与否对工程的顺利修建至关重要,尤其对于软岩隧洞而言,由于围岩条件恶劣,使隧洞衬砌结构受力处于不利状态,其隧洞断面形式的选择应更加谨慎。隧洞断面不仅要满足基本的使用功能,还应当符合结构可靠,经济合理,施工便捷的原则。本文以引汉济渭调水工程秦岭隧洞出口钻爆段为研究对象,从工程地质条件、隧洞结构受力、施工条件、工程投资等方面对标准马蹄形断面与平底马蹄形断面进行综合比选,得出在软岩段宜采用底部为弧形的标准马蹄形断面。
During the process of tunnel engineering design, reasonable section type takes an important role in the successful project construction, the stress of tunnel lining structure is under disadvantageous condition and the choice of tunnel section type should be more careful due to the abominable surrounding rock condition in soft rock tunnel, which means tunnel section should not only satisfy the basic use function, but also comply with the principle of reliable structure, reasonable economy and convenient construction. Based on the drilling and blasting section of Qinling tunnel exit in Hanjiang to Weihe river water diversion projectriver engineering, the comprehensive comparison and selection was made between standard horseshoe-shaped section and flat bottom horseshoe-shaped section considering the factors as engineering geological conditions, the tunnel structure stress, the construction conditions and the project investment,which concludes that the standard horseshoe-shaped section with arc bottom should be adopted in soft rock section.
作者
王江
WANG Jiang(China Railway First Survey and Design Institute Group Co., Ltd.,Xi＇ an Shaanxi 710043 ,China)
出处
《铁道建筑》
北大核心
2017年第4期76-79,共4页
Railway Engineering
基金
陕西省引汉济渭工程建设有限公司科研项目(引汉建函[2014]93号)
关键词
输水隧洞
软岩
马蹄形断面
理论分析
Diversion tunnel
Soft rock
Horseshoe- shaped section
Theoretical analysis
