摘要
首先根据新意法的基本理论,对浏阳河隧道进行分类,确定其为短期稳定状态。然后依据超前核心土的平衡和隧道开挖的影响范围确定超前预支护的基本参数,并通过数值计算、模型试验和现场监测三个方面对其参数进行验证。分析结果表明:采取的超前支护措施有效地限制了地表沉降、隧道洞周收敛和掌子面挤出变形,有利于隧道的稳定。
LiuYang River tunnel was classified as in short-term stability condition according to the basic theory of NITM.. The basic parameters of advance support was determined based on the balance of advance core and the influenced area of excavation and also checked by numerical computation, model test and in-situ monitoring. Results indicated that the advance supports can restrict the ground settlement, cavity convergence and extrusion of tunnel face, which are helpful to the stability of tunnel.
出处
《现代隧道技术》
EI
北大核心
2009年第4期83-88,共6页
Modern Tunnelling Technology
关键词
浏阳河隧道
新意法
控制变形
超前支护
LiuYang River tunnel
NITM
Deformation control
Advance support
