灾害学Issue(1)：66-71,6.DOI:10.3969/j.issn.1000-811X.2016.01.014
汶川8.0级地震震区溃决型和一般型泥石流冲出量研究
Study on Run-out Amount of Break and General Debris Flows in Wenchuan Earthquake Area
摘要
Abstract
A large number of general debris flows were triggered by rainstorm in the seismic area after Wen-chuan earthquake.Meanwhile,bam-break debris flows were triggered by rainstorm.Therefore,we select the inves-tigation data from the report of emergency exploration for debris flow in the seismic area and field investigation which conduct 34 common debris flow gullies and 9 break debris flow gullies.Firstly,we analyze and summarize the characteristics of break debris flow in Wenchuan earthquake area.Secondly,break debris flow is easier to block the river than general debris flow,because the run-out amount of break debris flow is several times larger than the common debris flow.Finally,applying the multivariate regression analysis,a multiple-factor and regression-statisti-cal model which has been improved the accuracy ofthe runout volume is established to estimate the run-out volume of the common debris flow.The validation shows that the new model is suitable for predicting the run-out volume of the common debris flow in Wenchuan earthquake areas.The results of the study not only provides more effective and scientific equations to design disaster prevent and mitigation engineering for the common debris flow,but pro-vides the basis theory of researching further depth for dam-break debris flow in the seismic area.关键词
汶川震区/溃决型/一般型/泥石流/冲出量Key words
Wenchuan earthquake area/bam-break/general/debris flow/run-out volume分类
资源环境引用本文复制引用
方群生,唐川..汶川8.0级地震震区溃决型和一般型泥石流冲出量研究[J].灾害学,2016,(1):66-71,6.基金项目
科技基础性工作专项（2011FY110100－3）；国家重点实验室团队项目 （）
