提出了一种在河岸后退过程中追踪不规则动边界的方法,其中心思想是当河岸单元临水边侧壁在水力冲刷、崩塌作用下后退时,记录其侵蚀状态 当后退至一定程度后,在该河岸单元的临水边侧生成一个能反映真实边界的亚单元-Proposed a riverside retreat in the process of tracking moving boundary irregular way, the central idea is that when the river bank near the water side wall unit in the hydraulic erosion, the role of the next collapse back, recording its eroded state　When back to a certain extent In the waterfront side of the river bank unit can generate a sub-unit boundaries reflect the true