某水库库岸滑坡体滑速及涌浪估算

Estimation of Landslide Velocity and Surge in a Reservoir Area

在长期自然营力后,大部分边坡都渐渐趋于稳定。但如果水文地质环境发生变化,稳定状态下的边坡也可能失稳。以水库为例,在正常蓄水运行后,库岸边坡浸水岩土体饱水软化;当水库水位骤降时,来不及排出坡体内部岩土体的一些孔隙水,会产生渗透作用。这两种情况都增加了库岸失稳破坏的可能性。失稳破坏后形成的滑坡体冲入库区,将严重影响水库大坝安全。计算滑坡体冲入库区的滑速和造成的涌浪高度,评估其对大坝的影响。

After long-term natural forces,most slopes gradually tend to stabilize.But when the hydrogeological environment changes,stable slopes may also become unstable.Taking a reservoir as an example,after normal water storage and operation,the saturated rock and soil on the reservoir bank slope soften;When the water level of the reservoir drops suddenly,some pore water in the rock and soil inside the slope cannot be discharged in time,resulting in infiltration.Both situations increase the possibility of instability and damage to the reservoir bank.If the landslide formed after instability and damage rushes into the reservoir area,it will have a serious impact on the safety of the reservoir dam.Calculate the sliding speed and surge height caused by the landslide body rushing into the reservoir area,and evaluate its impact on the dam.