Research On The Low Embankment Highway Channel Drainage Program And Infiltration Cell Construction Technology

Low embankment design scheme is a longitudinal profile control factor in the road alignment design which is to satisfy the minimum height of the subgrade.The purpose is to reduce the average filling height to uttermost and the number of channels.Low embankment can reduce the possession of the subgrade and the use of the earth-gathering,saving the investment,reduce the cost,more safety and comfortable,make the construction more convenient and the engineering quality easy to control,make the settlement smaller and the damages lesser when the project finished,make the slope protection much simple,make the highway natural and the landscape coordination etc, the use of the low embankment in the road alignment design in our plain area is an important embodiment of the new idea in the highway construction.The use of low embankment design scheme in the plain region certainly will bring pavement drainage problems during the rainy season, from the domestic and overseas scholars's research of the highway pavement runoff pollutants we can see,the infiltration and repour of the rain inevitably will bring great influence to the groundwater, and there also exist environmental risk.Take the low embankment design scheme to reduce subgrade filling height,should guarantee that the collect-rainwater can drain away promptly and should not affect the normal traffic in general intensity rainfall,and make sure that the infiltration and repour of the rain not bring influence to the groundwater,which achieve the purpose of the environmently highway construction:sustainable development,resource conservation and environment friendly.In this condition,we put forward the passage collecting pool purifying filtration system.This paper based on the passage collecting pool purifying filtration system which presented in the drainage technology study of the north China plain area,it unifies the entity project of Heng Da section belongings to Da Guang highway in Hebei Province and from the domestic and overseas scholars's research of the highway pavement runoff pollutants, considering the influence and measures of the rain's penetration and supplementary to the groundwater through the passage collecting pool purifying filtration system,it demonstrates the feasibility of the infiltration and repour of the rain on the highway pavement,and according to the site construction of the infiltration cell,the paper briefly introduced the method of the construction.From the feasibility demonstration to the passage collecting pool purifying filtration system we can see,this system is also suitable for those areas which have the similar hydrogeology conditions like the the north China plain,and hoping to gain widely popularizted.