Mutual Interference of Two Debris Flow Deposits Delivered in a Downstream River Reach

作     者：STANCANELLI Laura Maria LANZONI Stefano FOTI Enrico 

作者机构：Department of Civil Engineering and Architecture University of Catania Department of Civil Environmental and Architectural Engineering University of Padua 

出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)

年 卷 期：2014年第11卷第6期

页      面：1385-1395页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0303[法学-社会学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0705[理学-地理学] 0815[工学-水利工程] 0837[工学-安全科学与工程] 081502[工学-水力学及河流动力学] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0813[工学-建筑学] 0704[理学-天文学] 0833[工学-城乡规划学] 0713[理学-生态学] 0834[工学-风景园林学（可授工学、农学学位）] 

基　　金：supported by the project GAPDEMM – GIS-based integrated platform for Debris Flow Monitoring  Modeling and Hazard Mitigation – founded by Fondazione Cassa di Risparmio di Padova e Rovigo in framework of Progetti di Eccellenza 2011-2012 

主　　题：泥石流堆积 下游河段 相互干扰 碎屑沉积物 实验测试 交付 几何形状 触发条件 

摘      要：We investigate experimentally the depositions of two contiguous debris flows flowing into a main river *** aim of the present experimental research is to analyze the geometry and the mutual interactions of debris flow deposits conveyed by these tributaries in the main channel.A set of 19 experiments has been conducted considering three values of the confluence angle,two slopes of the tributary,and three different triggering conditions(debris flows occurring simultaneously in the tributaries,or occurring first either in the upstream or in the downstream tributary).The flow rate along the main channel was always kept *** each experiment the two tributaries had the same slope and confluence *** analysis of the data collected during the experimental tests indicates that the volume of the debris fan is mainly controlled by the slope angle,as expected,while the shape of the debris deposit is strongly influenced by the confluence ***,in the case of multiple debris flows,the deposit shape is sensitive to the triggering *** index for damming formation available in literature has been considered and applied to the present case,and,on the basis of the collected data,considerations about possible extension of such indexes to the case of multiple confluences are finally proposed.