灾害学2016，Vol.31Issue(3)：119-124,137,7.DOI:10.3969/j.issn.1000-811X.2016.03.020
甘肃省南部泥石流运动规律的分析与研究--以甘肃舟曲三眼峪沟为例
Analysis and Research on the Law of Motion of Debris Flows in Southern Gansu Province---A Case Study of Sanyanyu Gully in Zhouqu of Gansu Province
摘要
Abstract
Based on the similarity principle,we chose the appropriate scale to construct a debris flow model in Wudu district of Longnan City in the southern Gansu Province,it can rebuilt the “8.8”catastrophic debris flow in Zhouqu.Through physical simulation experiment,we can know the average velocity was 0.7417 m /s,the im-pact force is 1.99N,the thickness of the accumulation is 6.1 cm and the accumulation area is 3.64 m2 .At the same time,we have also draw accumulation form.In addition,empirical formulas were selected to calculate debris flows dynamic values which are compared with the experimental data,and they can verify the accuracy of the mod-el.Meanwhile,the motion law of debris flows is further analyzed.According to the elements of debris flow forma-tion,hazard assessment factors are extracted.The result showed that Sanyanyu gully is a high hazard debris flow gully.This result can provide reliable scientific basis for debris flow disaster prevention project.关键词
三眼峪/泥石流/模型/危险度/冲击力/流速/甘肃舟曲Key words
Sanyanyu gully/debris flow/model/hazard/impact force/flow velocity/Zhouqu of Gansu Province分类
农业科技引用本文复制引用
舒和平,韩拓,齐识,马金珠..甘肃省南部泥石流运动规律的分析与研究--以甘肃舟曲三眼峪沟为例[J].灾害学,2016,31(3):119-124,137,7.基金项目
国家科技支撑计划项目 （）
