Geocell Revetment Scouring Test And Its Application In The Small Rivers

With the progress of world science and technology and economic development,global environmental problems will become more and more severe.In recent years,China’s highways,rivers,railways and mountainous high-grade highway projects have sprung up.This led to the emergence of a large number of artificial slopes.However,erosion,erosion and shallow landslides are common in these slopes.If these slopes are not dealt with,then the light will cause ecological imbalance,in serious cases,may even cause landslides and landslides,which will undoubtedly be the people’s property and even life great harm.Once the ecosystems of the slopes have been destroyed,they can not be restored within three to five years or even longer.Therefore,how to quickly restore the ecological environment of the slope and to achieve the purpose of slope vegetation protection,which is urgently needed to study and solve the problem.Traditional river revetment type,such as: dry stone masonry slope,masonry slope protection and slope protection,such as spraying concrete.Although these traditional types of slope revetment are good,it would damage the ecological environment,so that the loss of the ecological balance.The traditional slope protection type and even make the river and the two sides of self-regulation and purification capacity greatly weakened.As a result,a new type of slope protection came into being.The ecological slope protection is mainly composed of engineering measures and vegetation protection.It can effectively improve the bank slope landscape,creating a green ecological environment,in order to achieve the perfect combination of slope protection and greening together.Geocell room grass as a slope protection technology of ecological slope protection in recent years,the development is very rapid.Geocell mat grass slope can not only slow down the soil erosion,but also can improve the ecological environment,the solid soil performance,energy dissipation is obvious.The reason is because the geocell is a kind of slope protection and vegetation combination of the new type of slope protection.Geocell protection can not only reduce rain water splashing and slope runoff and river water erosion,plant roots also has a drainage function,reinforcement and anchor the role of soil;from other point of view,you can also green slope environment,Help to restore the ecological environment of the slope.Geotechnical cell protection slope in the railway,highway and other construction projects have been more and more widely used.Geo-grid ecological slope used in small rivers which not only beautify the environment,reduce pollution and reduce the project cost,but also can effectively play a role in strengthening the river bank.In this paper,the performance of geocell is analyzed by simulated rainfall experiment and on-site river bank erosion test.The results show that the critical slope ratio of the geocell revetment under the 50 mm / h rain intensity is obtained from three kinds of slope ratios commonly used in the project.Between 1: 1.5 and 1: 2.5.Geocell cell slope has good soil erosion resistance,in certain construction conditions,geocell lattice grid smaller the better the performance of soil conservation.Geocell embankment with its slope position decreased,the greater the possibility of its erosion by the river;the greater the frequency of erosion by the river,the longer the more vulnerable to loss of soil.After the formation of its geocell revetment vegetation,the better vegetation coverage,the better soil erosion resistance.The research results have been applied to the slope protection of small rivers in Lichuan demonstration area.Through the application in practical engineering,observe the actual situation of geocell revetment,combined with the theory and experiment concluded that: Geocell eco-bank can be used with small rivers.