Experimental Investigation Of The Landslide Surge's Effect On The Vertical Wharf In Hill Bend Channel Type Reservior

Since the Three Gorges reservoir has been built,the bank slops are facing the problem of the landslide surge because of the long-time high water level and the operation of the reservoir.The bank is soaked by the reservoir water for a long time,by the influence of water erosion,wave shock,water level fluctuation and earthquake and so on,soil or rock on the bank slope under the action of gravity along with a weak surface or weak decline,called “landslide”.A large amount of soil or rock mass slide into the water,causing channel blocked and capacity reduced.Also provoked a huge swell will produce very big effect near the pier structure.The interaction between waves and wharf structure changes the stress of the structure and may causes the destruction of the wharf.Mountain river form is very complex,the domestic related research is very few.Therefore,carrying out the related research is very necessary.The research of the force characteristics of the overhead upright wharf structure under the landslide surge has been done in this paper.The main research results are as follow:(1)Combination with the Three Gorges reservoir area landslide data,established the physical model test.Through gathering data,we know the wave pressure on wharf piles and its change law under landslide surge,and determine the main influence factors of the wave pressure.On the basis of the factor analysis and regression analysis,the experience formula of the wave pressure on piles under the landslide has been given out.(2)By setting measuring points,we get the wave pressure data acted at the bottom of the panel.Analysis obtains the lift force on the bottom of the panel and its change law and its main influence factors.The experience formula of the lift force on the bottom of panel under landslide surge has been given out.(3)Decorate mooring ships on the shore and across sides of the landslide,by analyzing the date on the ships,we find the mooring force on the ships,its changing law and its main influence factors.Besides,we also find the place where the biggest mooring force may happen with comparing different data.The experience formula of the mooring force under the landslide is been given out.(4)We find the ship impact force changing law and its main influence factors.