Research On The Application Of Combined Support In The Reinforcement Of Reservoir Bank Slopes

With the construction of highway engineering in our country,there will be a lot of reservoir bank highway.Some of the completed reservoir banks began to suffer from instability,collapse and other diseases.In this case,it is urgent to adopt reinforcement measures to deal with the road diseases so as to ensure the safe operation of the road.In this paper,the disease road of Madushan reservoir in the Lengqing highway are taken as the support object.Considering the influence of different reinforcement measures taken by the reservoir water in the process of lifting on the slope stability and highway,to study the mechanism and effect of different reinforcement methods such as retaining wall,anchor cable and anti-slide pile.Carrying out this research can not only directly serve the reinforcement engineering of the highway in madushan reservoir area,but also provide reference for the reinforcement design of the new highway and similar highway projects.The research conclusions and results of this paper are as follows:Based on the highway reinforcement project in Madushan reservoir area,a two-dimensional saturated-unsaturated seepage model of the highway slope in the reservoir area was established by GEO-Studio.Through simulation software,the influence of drainage holes or not on the highway engineering and slope stability in the process of reservoir water level rise and fall was compared to explore the evolution rules of seepage,displacement,stress and slope stability under the condition of retaining wall with or without drainage holes.It is concluded that the retaining wall with drain hole is more beneficial to the infiltration of groundwater,the highway engineering is more stable,and the stability of side slope is higher than that of the retaining wall without drain hole;Through simulation analysis of the effects of three joint reinforcement measures(first,the retaining wall and anchor cable joint reinforcement;the second is the joint reinforcement of retaining wall and anti-slide pile.third,retaining wall,anchor cable and anti-slide pile)on highway engineering and slope stability,the results show that the stability of slope can be improved by different combined reinforcement methods,such as retaining wall reinforcement,anchor cable reinforcement and anti-slide pile reinforcement;When the water level ofthe reservoir drops,the stability of the slope is in the most dangerous state,however,the combined reinforcement condition of retaining wall,anchor cable and anti-slide pile is higher than that of other combined reinforcement measures,and this provides a theoretical basis for practical engineering.