Author(s): YUE Shubo, DIAO Mingjun, WANG Lei
Pages: 816-825
Year: 2016 Issue:  6
Journal: Journal of Hydraulic Engineering
Keyword:  landslide-generated waves; initial form of landslide-generated waves; conventional landslide-generated waves; translation landslide-generated waves; jump landslide-generated waves; attenuation;
Abstract: 通过滑坡涌浪模型试验,运用高速摄像机记录滑坡入水形成涌浪的过程,并采用多功能监测系统测量滑坡涌浪形成后沿程传播的水位变化过程线,揭示了滑坡涌浪的初始运动形态特征和衰减变化规律.由于滑坡体的高速入水,水体的形态从冲溅形态发展到前涌形态再到后溃形态,伴随着冲溅形态水体的大片落下、前涌形态水体的前涌和后溃形态水体的向后溃倒,最终形成初始形态的涌浪.创新性地引入涌浪初始形态Froude数,并据其数值范围将涌浪的初始形态分为三种形态:常规涌浪、推移涌浪、跃冲涌浪.在运动的过程中,常规涌浪衰减为波形较稳定的波;推移涌浪将慢慢地衰减为常规涌浪;跃冲涌浪先衰减为推移涌浪再衰减为常规涌浪.