Slope toe vertex selection method in BSTEM iterative algorithm

The invention relates to a slope toe vertex selection method in a BSTEM iterative algorithm, and the method comprises the steps: before carrying out the iterative calculation of each hydrological event, determining a slope toe vertex again according to the following steps: S1, obtaining the contour data of a bank slope, and determining an initial slope toe vertex; s2, a slope toe erosion model TEM is called, the erosion amount of the bank slope under the action of water flow erosion is calculated, the profile of the eroded bank slope is obtained and imported into a bank slope stability model BSM, and a node closest to the initial elevation is selected as a slope toe vertex; and S3, calling the BSM, calculating a bank slope stability coefficient Fs, and further determining a slope toe vertex. 本发明涉及一种BSTEM迭代算法中的坡脚顶点选择方法，在对每个水文事件进行迭代计算之前，按照如下的方法重新确定坡脚顶点：S1：获取岸坡轮廓数据，并确定初始坡脚顶点；S2：调用坡脚侵蚀模型TEM，计算岸坡在水流侵蚀作用下的侵蚀量，得到侵蚀后岸坡轮廓并导入岸坡稳定性模型BSM，选取与初始高程距离最近的节点作为坡脚顶点；S3：调用BSM，计算岸坡稳定性系数Fs，进而确定坡脚顶点。