不同出口山脚约束的泥石流淤埋实验研究

英文篇名：An Experimental Study on Debris Flow Silting and Burying Damage under Condition of Mountain Foot Constraint
中文刊名：灾害学
英文刊名：Journal of Catastrophology
作者：柳金峰 ; 欧国强 ; 游勇 ; 吕娟
英文作者：Liu Jinfeng1 ; 2 ; 3 ; Ou Guoqiang1 ; 2 ; You Yong1 ; 2 and Lǔ Juan1 ; 2(1.Key Laboratory of Mountain Surface Process and Hazards ; CAS ; Chengdu 610041 ; China ; 2.Institute of MountainHazards and Environment ; CAS ; Chengdu 610041 ; China ; 3.Graduate University ; CAS ; Beijing 100049 ; China)
中文关键词：出口山脚约束 ; 泥石流 ; 淤埋 ; 实验研究 ; 汶川8.0级地震
英文关键词：mountain bottom constraint ; debris flow ; silting and burying damage ; experimental study
出版日期：2009-09-20
机构：中国科学院山地灾害与地表过程重点实验室;中国科学院·水利部成都山地灾害与环境研究所;中国科学院研究生院;
年：2009
期：03
出版单位：灾害学

摘要

汶川8.0级地震后,在灾后重建的过程中,很多位于泥石流沟口堆积区的居民建筑、交通干线、临时设施等都不可避免会遭受到泥石流的威胁。不同泥石流沟堆积区两侧山脚的夹角都有所不同,其对泥石流在堆积区的淤埋情况也会有所影响。针对此种情况,开展了18组室内实验,探讨出山口山脚约束对泥石流淤埋的影响。实验结果表明,随着约束程度的加大,泥石流扇状地的淤埋宽度随之减小,淤埋长度和厚度随之而增大,泥石流淤埋危险有向下游推进的趋势。
During the period of the reconstruction after the M8.0 Wenchuan earthquake,many residential buildings,main roads,temporary facilities,etc.in the debris flow accumulation areas are inevitably threatened by debris flows.Different angles of the mountain bottom in different debris flow accumulation areas have different influences on silting and burying situations in the accumulation areas caused by debris flows.Eighteen laboratory experiments are carried out accordingly to study the influence of mountain pass constraints at the foot of the mountain on debris flow silting and burying situations.It is shown that,with intensification of the constraint,the silting and burying width decreases while the silting and burying length and thickness increase in the debris flow fan-shaped area.So it shows a tendency of downstream extending of debris flow silting and burying.

引文

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