泥沙研究2017，Vol.42Issue(4)：60-66,7.DOI:10.16239/j.cnki.0468-155x.2017.04.009
基于FLO-2D的溃决型泥石流模拟研究
Modeling of dam-breaking debris flow using FLO-2D model
摘要
Abstract
On July 10,2013,Huaxi debris flow was caused by a heavy rainfall with 100 years return period.The debris flow of Huaxi Gully was analyzed as a typical dam-breaking debris flow case,which transported a huge volume of sediment to lower stream and blocked the Minjiang River,resulting in huge economic losses and casualties.In order to analyze the hazard of this type debris flow and the runout of debris flow for different rainfall frequency,this paper simulates the dam-break and non-break debris flows of Huaxi Gulley for different return periods by FLO-2D model.Then we use the FLO-2D run-out modeling results for the 100 years frequency to contrast with the field investigation.The results show that the runout volume,area and average depth under dam-breaking are twice as much as that under non-breaking scenario.The accumulation volume under dam-break is 5.58 x 104m3 less than the actual survey.The accuracy of simulation results ia 88.61％,which indicate that a good result to simulate debris flow could be simulated by FLO-2D.关键词
华溪沟/溃决型泥石流/FLO-2D/数值模拟Key words
Huaxi Gully/dam break/debris flow/FLO-2D/numerical simulation分类
天文与地球科学引用本文复制引用
杨涛,唐川,方群生,王毅..基于FLO-2D的溃决型泥石流模拟研究[J].泥沙研究,2017,42(4):60-66,7.基金项目
国家自然科学基金项目(41672299) （41672299）
