涌浪作用下库岸边坡的影响因素分析

Analysis of Influencing Factors of Reservoir Bank Slope under Surge Action

针对涌浪冲击下库岸边坡可能失稳的问题,文中以某地水电站研究对象,采用COMCOT程序构建分析模型,对涌浪作用下的边坡稳定性进行计算分析。通过对库岸边坡的安全性进行评估,构建库岸边坡的稳定性分析方法及提出滑坡产生后的涌浪计算方法。经研究发现,在正常蓄水水位下,坝区边坡能够有效抵御由滑塌涌浪产生的冲击荷载,但在涌浪传递过程中可能出现波浪爬高的情况,从而对边坡的稳定性造成一定的影响。在蓄水水位爬升的过程中,坡体的顶部和底部可能会出现较大的不平衡力,使边坡存在局部滑塌的可能性。

Aiming at the problem that the bank slope of the reservoir may be unstable under the surge impact,the analysis model of the COMCOT program was used to calculate and analyze the stability of the slope under the action of the surge by taking the research object of a hydropower station in a certain place,and by evaluating the safety risk of the bank slope of the reservoir,the stability analysis method of the bank slope of the reservoir and the calculation method of landslide surge were summarized and proposed.However,during the wave transmission process,waves may climb higher,which will have a certain impact on the stability of the slope;During the climb of the water storage level,there may be a large unbalanced force at the top and bottom of the slope,so that there is a possibility of local collapse of the slope.