基于线性冲蚀公式的二维非黏性土石坝溃决模型

刘梦凡,吴钢锋,张科锋,董平

2D non-cohesive earthen embankment breach model based on linear erosion formula

Meng-fan LIU,Gang-feng WU,Ke-feng ZHANG,Ping DONG

表 1 一维漫顶溃坝算例参数敏感性分析

Tab.1 Sensitivity analysis of parameters for 1D overtopping breach

算例 Qmax/(m³·s−1) δm/% δr/% zbf/m δm/% δr/% 测量值 0.110 — — 0.540 — — 参照组 0.113 3.50 — 0.575 6.44 — τc = 10−1 Pa 0.113 3.50 0 0.575 6.44 0 τc = 10−3 Pa 0.113 3.50 0 0.575 6.44 0 φc,wet = 25° 0.129 17.54 13.56 0.482 −10.83 −16.23 φc,wet = 35° 0.100 −9.03 −12.11 0.635 10.54 10.54 φc,dry = 40° 0.113 3.50 0 0.575 6.44 0 φc,dry = 60° 0.113 3.50 0 0.575 6.44 0 φc,dry = 70° 0.113 3.50 0 0.575 6.44 0 φc,dry = 80° 0.113 3.50 0 0.575 6.44 0 nf= 0.015 m−1/3·s 0.083 −24.24 −27.00 0.672 24.44 17.00 nf= 0.020 m−1/3·s 0.138 25.45 22.12 0.493 −8.70 −14.26