Study On Characteristics Of Landslide Surge In The Three Gorges Reservoir Area

The relative specification research of mountainous river reservoir landslide surge,in order to establish the perfect landslide surge effected on channel conditi evaluationsystem，provide the solid foundation in this paper. on the basis of landslide datainvestigated and classificated In the reservoir area of the three gorges, systematicallyand completely simulate the reservoir soil landslide surge laboratory, the reservoir rocklandslide surge laboratory and reservoir area steep rock landslide surge laboratory,research on the initial surge, the along surge, attenuation of surge, climb higher Etc., fitout the corresponding empirical formula, and simply verify related engineeringexamples. The main research results are as follows:(1)On the basis of investigation and data analysis along coastal segments amonglandslides occurred in the Three Gorges Reservoir, briefly summarize the characteristicsof landslides having occurred, overll situate Mountain river landslides with the rocklandslides, the soil landslides in large and medium-sized and steep rock landslides,respectively research on the physical model test and related surge characteristicsaccording to their characteristic.(2)Respectively Analysis the three types of landslide of basic characteristic aboutinitial and along surge.The primary and secondary relationships of influence factors areobtained by mathematically inducting and analyzing influence factors of surge. By themethod of mathematical regression, the empirical formula of the first wave height ofrock landslide is established.(3) It is respectively concluded wave height attenuation characteristics and thecorresponding formula of wave height attenuation coefficient of the rock landslide surge,steep rock landslide surge and soil landslide surge using multiple linear regressionanalysis method.(4)The main characteristics and influence of various factors of reservoir banksrun-up under the effect of the rock landslide surge is analyzed and the empirical formulaof the maximum run-up under the effect of surge is given.Give run-up formula of Soiland rock landslides.(5)The engineering examples which represent the three types of landslideengineering is Dayantang landslide,Jipazi of Yangtze river landslide and Lianziyalandslide.it is basically anastomosis through Computing validation the initial surge calculation and run-up,so the formula can be promoted to be used in relatedengineering.