三峡库区陡岩滑坡涌浪爬高试验分析

Experimental research on dangerous rock-type landslide run-up of the river—channel type reservoir in mountainous area

通过水槽概化模型试验,研究了初始涌浪高度在河道传播中的衰减规律,根据波高衰减变化程度把衰减系数计算分为从初始涌浪传播到3m和从3m传播到河对岸两个阶段来考虑。分析了坡前波陡、斜坡坡度和坡前相对波高等影响初始涌浪爬高的主要因素,采用多元线性回归对试验结果进行对比分析,得出了初始涌浪传播的波高衰减系数计算公式和陡岩滑坡涌浪爬高的计算公式,为库区护岸整治工程和港口码头的坝顶高程设计及陡岩滑坡灾害预报提供了科学的参考价值。

Based on the sink conceptual model,this paper studies the initial surge height in the attenuation rule of channel transmission,according to the wave height attenuation change by attenuation coefficient calculation is divided into spread from initial surge to 3 meter and spread from 3 meter to the cross river,analyzes the influence of main factors such as wave steepness,gradient of slope and slope before the relative wave height on the initial wave run-up,by multiple linear regression analysis based on experimental results is compared,and obtains the formula of the spread of initial surge wave height attenuation coefficient and the formula of dangerous rock-type landslide surge run-up,this studies provides scientific reference value for the reservoir bank protection regulation engineering and the dam crest height design of port terminals and dangerous rock-type landslide forecast.