穿越滑坡段高速公路隧道综合防治技术研究

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Abstract 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．

Key words： expressway tunnel engineering landslide anti － slide pile comprehensive prevention measures

Received: 28 February 2013

PACS:

U456． 3

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http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2013/V30/I3/71

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