摘要
隧道在穿越含有地下水的富水破碎岩体层时,由于水压力的作用,容易造成隧道开挖后发生突水、突泥等事故,并且地下水对后期结构具有长期的压力作用以及对混凝土的侵蚀作用,对结构的使用极其不利,因此在穿越软弱破碎带和破碎饱水区时采用超前帷幕注浆法,对岩层进行改善,将土体中存在的孔隙水阻挡在开挖的范围以外,确保掌子面施工的安全。
Whe tunnel across the water-rich lamination broken rock layer, because of water pressure ,it is easy to cause water gushing-out after the tunnel is excavated. By the way, mud and other sudden accident would he happened. The lamina- tion structure of water has the long-term pressure to structure as well as the erosion of concrete which it has bad effect to the structure. Thus crossing the weak rock and broken water-saturated zone, we use curtain grouting method to improve rock, to he sure of pore water is outside of the scope of the excavation and to ensure the security of the tunnel face.
出处
《岩土工程技术》
2014年第2期73-75,82,共4页
Geotechnical Engineering Technique
关键词
隧道工程
富水破碎层土体改善
帷幕注浆技术
铜锣山隧道
tunnel engineering
improvement of broken water-rich layer
tunnel curtain grouting method
tongluoshan tunnel
