考虑压脚措施下滑坡涌浪经验估算法对比研究

分别利用潘家铮方法和水科院经验公式法计算了雾江库岸滑坡体不同工况及压脚措施前后的滑坡涌浪高度,通过两种估算方法计算结果的对比,发现水科院经验公式法算出的涌浪高度远小于潘家铮法的计算结果,建议在进行滑坡涌浪估算时以潘家铮法作为主要的经验估计法,水科院经验公式法作为辅助方法。通过采取坡脚压脚措施前后计算结果的对比,发现坡脚压脚措施可有效降低涌浪高度,防治涌浪灾害。

The comparative study of the empirical estimation of landslide surge under the measure of pressing foot

Two common empirical estimate methods, PAN Jiazheng method and IWHR empirical formula method, were used to calculate the height of reservoir bank landslide surge of Wu River. By comparing the results from two estimate methods, it is found that the height of surge calculated by IWHR empirical formula method is far less than that of PAN Jiazheng method. It is suggested that Pan Jiazheng method should be used as the main empirical method in the estimation of landslide while the IWHR empirical formula method as an auxiliary method. By comparing the results of surge height before pressing foot at the toe of slope and after, it is indicated that height of surge decreased obviously after pressing foot at the toe of slope. The method of pressing foot at the toe of slope can prevent the disaster of reservoir bank landslide surge.