摘要
九龙江隧道为西气东输三线东段控制性隧道工程,隧道实长1096.5m。隧道在出口岸滩穿越全风化花岗岩,地质条件极其复杂,各风化层界面变化频繁,含水量大,裂隙发育,原岩结构完全被破坏,围岩自稳能力极差。施工过程中发生数次塌方、突水、涌砂情况。通过对隧道K1+294处突水、涌砂情况研究,介绍了西三线东段九龙江水域穿越隧道穿越该段饱和全风化花岗岩的施工关键技术,为同类地质条件下的地下工程施工提供借鉴。
Jiulongjiang ttmnel is the controlled project of the third-line of the west-east gas pipeline project,The length is 1096.5m. In the beach of the tunnel port, through saturated completely decomposed granite. The geological condition is extremely complicated, each decomposed layer interface changes frequently, and has large water, fracture develops, original rock structure is completely destroyed, and poor self-stability of surrounding rock, Several landslides, water gushings and sand boilings occurred during construction, Through the study of water gushing and sand boiling at Kl＋294,the article introduced the key construction technologies on the saturated completely decomposed granite in Jiulongjiang tunnel of the third line of the west-east gas pipeline project.
出处
《建筑技术开发》
2015年第12期61-64,共4页
Building Technology Development
关键词
水域穿越
隧道工程
饱和全风化花岗岩
water area traversing
tunnel project
saturated completely decomposed granite
