近坝库区狭窄河道滑坡涌浪高度及其传播规律

摘要

为研究近坝库区狭窄河道滑坡涌浪高度及其传播规律,基于水槽概化实验,针对近坝库区滑坡体,设计了3种形状和6个滑块,进行了物理模型实验研究.通过实验,得到了涌浪高度随形状、水深、下滑高度和体积因素的变化规律及涌浪横向传播规律.分析沿程涌浪高度与相对距离之间的关系得知,相对距离在约2以内时衰减较大,而后衰减相对较小.该研究成果对预防、预测和减少滑坡涌浪造成的灾害损失具有一定的现实意义.%In order to study landslide surge wave height and propagation rule,based on the flume conceptual experiment model,the physical model of the experimental study was carried out,aiming at the design of three types and six slide blocks in the near-dam reservoir area.The variation law of surge height with different factors(such as the type, water depth,glide height and the volume)was obtained.The propagation of transverse surge was studied.By analyzing the relationship between the surge height and relative distance,the results show that the dattenuation was lager when the relative distance was about less than 2,and while was over 2,the attenuation was relatively smaller.The re-search has some practical significance for the prevention,prediction and decrease of dis-aster losses caused by the landslide surge.