Experiment And Analysis Of Ecological Bank Slope Of Silty Embankment In Cold Area

In the three rivers management project of Heilongjiang Province,thousands of kilometers of dykes contain a large amount of sand embankment protection.Heilongjiang province is located in cold temperate zone,the ecological environment in some areas is fragile.The construction caused damage to the environment,especially the sand embankment protection,and soil erosion even affect the safety and stability of the embankment.Through on-the-spot investigation and study on the theory,a typical section of embankment was chosen to carry out a test to verify the prevention effect of three dimensional geonet on sand embankment in cold area.And,the ecological slope protection technology combining three dimensional geonet and plant planting technology has been applied to test.The combination of three dimensional geonet and plant can improve the sand embankment soil erosion in the large extent,and the protection system has good landscape effect,contribute to the recovery of ecological system in the project area.The main research route and research methods of the paper are: consulting data to study ecological slope protection technology;Selecting three plants that can grow in sandy soil in cold temperate zone;Selecting appropriate ecological slope protection materials——three dimensional geonet;Carrying out the slope engineering test and analyzing the effect of three dimensional geonet to protect the sand embankment.The ecological slope protection technology combining three dimensional geonet and plant planting technology not only can guarantee the safety and stability of slope,but also can reduce the influence of freeze-thaw on the slope soil,ease the erosion of sandy soil,promote the self restoration of the ecosystem and creat a healthy ecosystem of the slope.The application of ecological slope protection technology can greatly reduce the use of reinforced concrete and other hard materials,but also reduce the excavation and backfill of side slope earthwork,narrow the scope of construction,save the project investment.There is only the repairing effect on the ecological environment,without damage,It can not only control the soil erosion of sandy embankment slope,but also create a good natural landscape,play an important role in protecting the ecological environment.