山区河道型水库滑坡涌浪对岸坡冲刷深度的研究

摘要

The landslides occur frequently,the landslide surge often cause damage to the reservoir shore.Through the bank slope in mountain reservoir landslide physical model test,the different occurrence of landslide surge cause the maximum scour depth to Three different diameter slope was studied.By analyzing the relationship between the first wave height and width,thickness,slip angle of the landslide;Surge along the damping law;The relationship between the surge height before slope and maximum scour depth;Using regression analysis to get the first wave height calculation formula,along the swell attenuation formula,the experience calculation formula of slope the maximum scour depth.Eventually get the calculation formula of the maximum scour depth of bank slope by the landslide occurrence and the distance from the Landslide entry point to bank slope.The results can provide references for the Three Gorges reservoir protection work.%三峡库区滑坡频发,滑坡产生的涌浪经常对库区岸坡造成破坏.通过山区河道型水库滑坡物理模型试验,研究不同产状滑坡产生的涌浪对三种不同组成粒径岸坡的最大冲刷深度.通过分析首浪高度与滑坡体宽度、厚度以及滑面倾角的关系;涌浪沿程衰减规律;岸坡最大冲刷深度和岸坡前涌浪高度的关系;运用回归分析得到首浪高度经验计算公式、沿程涌浪衰减公式、岸坡最大冲刷深度的经验计算公式.最终得到受滑坡体产状以及滑坡入水点到岸坡距离影响的岸坡最大冲刷深度经验计算公式.研究成果可为三峡库区岸坡的维护提供相应参考.