摘要
研究目的:以隧道穿越滑坡段综合处置技术为工程背景,采用数值分析、施工实践和监控量测等综合手段,探讨库区公路滑坡段隧道穿越与滑坡的相互作用机制及其变形破坏模式,可提前对滑坡和隧道结构变化趋势进行分析,提出针对性的综合防治技术方案,进而有效地避免由此带来的重大损失。研究结论:(1)大坪滑坡群是在特殊的地质和水文条件共同作用下形成;(2)隧道开挖和边坡抗滑桩支护结构的相互作用机理可以表述为:抗滑桩属被动支护结构,抗滑桩变形是抗滑桩受力的体现,隧道开挖过程是对滑坡体扰动的过程,同时也是抗滑桩支护效应发挥的过程;(3)滑坡体加固方案和隧道支护及开挖方案能够达到既保证滑体稳定性,又保证隧道穿越施工安全的效果。
Research purposes： Taking the comprehensive treatment technologies for tunnel passing through the landslide area as the engineering background, the interaction mechanisms and deformation failure modes between the tunnel and landslide are explored and the comprehensive prevention measures for control of landslide is also presented by means of the numerical analysis, construction practice and site monitoring in order to analyze the change trend of landslide and tunnel structure in advance and avoid the heavy losses caused by the landslide.
Research conclusions： （ 1 ） The Daping landslides are caused by the joint effects of the geological and hydrological conditions. （2） The interaction mechanisms between the tunnel excavation and anti - slide pile of slope can be expressed as follows ： The anti - slide pile belongs to the passive support structure and the deformation of anti - slide pile is the embodiment of load bearing. The tunnel excavation process is a process of disturbing the landslide mass and also a process of bringing the anti - slide pile into play. （3） With the schemes of reinforcing landslide, tunnel excavation and tunnel supporting not only can the stability of landslide mass be guaranteed, but also can the security of tunnel construction be guaranteed.
出处
《铁道工程学报》
EI
北大核心
2013年第3期71-76,共6页
Journal of Railway Engineering Society
关键词
高速公路
隧道工程
滑坡
抗滑桩
综合防治技术
expressway
tunnel engineering
landslide
anti - slide pile
comprehensive prevention measures
