[1]柳金峰,游勇.粘性泥石流沟口回淤实验研究[J].山地学报,2011,(02):226.
　LIU Jinfeng,YOU Yong,et al.Experimental Study on Back Siltation in the Outlet of Viscous Debris Flow Channel[J].Mountain Research,2011,(02):226.
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粘性泥石流沟口回淤实验研究()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2011年02期
页码:
226
栏目:
山地学报
出版日期:
2011-01-01

文章信息/Info

Title:
Experimental Study on Back Siltation in the Outlet of Viscous Debris Flow Channel
作者:
柳金峰;游勇;
1．中国科学院山地灾害与地表过程重点实验室，四川 成都 610041；
2.中国科学院水利部成都山地灾害与环境研究所，四川 成都 610041
Author(s):
LIU Jinfeng; YOU Yong
1. Key Laboratory of Mountain Surface Process and Hazards， Chinese Academy of Sciences， Chengdu 610041， China;
2. Institute of Mountain Hazards and Environment， Chinese Academy of Sciences & Ministry of Water Conservancy， Chengdu 610041， China
关键词:
粘性泥石流; 沟口回淤; 实验研究; 回淤长度; 相对回淤坡度
Keywords:
viscous debris flow;  back siltation;  experimental study;  back siltation length;  relative back siltation slope
分类号:
P642.23
文献标志码:
A
摘要:
泥石流在堆积区进行堆积时,常在沟口形成回淤并造成灾害。为了探讨泥石流在沟口回淤的发展过程、影响因素及其预测,开展了4组107次泥石流连续堆积和4组共21次单次堆积实验。实验结果表明,粘性泥石流在沟口回淤的发展过程中,累积回淤长度与泥石流累积总量呈线性正相关,相对累积回淤坡度与泥石流累积总量呈对数负相关,根据相对累积回淤坡度的变化将粘性泥石流沟口回淤的发展过程分为三个阶段;在泥石流总量相同的情况下,回淤长度随泥石流重度增大而呈线性增大,随堆积区坡度增大而呈线性减小,随流通区坡度增大而成对数减小。相对回淤坡度随泥石流重度的增大呈线性减小,随堆积区坡度增大而呈线性增大,随流通区坡度增大而呈线性增大;...
Abstract:
Back siltation is usually formed in the outlet of viscous debris flow channel and causes damages. To discuss the development process， the influence factors and prediction of the back siltation in viscous debris flow gullies， 107 continuous experiments in four groups and 21 single experiments in four groups are carried out in different debris flow volumes， densities， slopes of deposition area and channel conditions. The results indicate that the accumulative back siltation length has a linear positive relation with the debris flow volume， and the relative accumulative back silation slope has a logarithmic negative relation with the debris flow volume. Based on the change of the relative accumulative back siltation slope， the development of the back siltation in viscous debris flow gullies are divided into three stages. Under the same debris flow volume condition， the back siltation length increases linearly with the increase of debris flow density， decreases linearly with the increase of slope of deposition area and decreases logarithmically with the increase of channel slope; the relative back silation slope decreases linearly with the increase of debris flow density， increases linearly with the increase of slope of deposition area and increases linearly with the increase of channel slope. Under different debris flow volume condition， the back siltation length increases linearly and the relative back siltation slope decreases linearly with the increase of debris flow volume. Based on the analysis of back siltation development process and the influential factors， applied the multiple linear regression method， the empirical formulas in continuous and single deposition conditions are established to predict the back siltation in viscous debris flow gullies.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2010-10-30；改回日期(Accepted) : 2011-01-05。
基金项目（Foundation item）：国家自然科学
基金项目（编号: 40971014和40901008）。\[Supported by National Natural Science Foundation of China (No. 40971014 and 40901008).\]
作者简介（Biography）：柳金峰 (1979- )，男，安徽泾县人，助理研究员，主要从事山地灾害实验与防治工程研究。\[Liu Jinfeng(1979- )，male，research assistant，engaged in the experiment and mitigation research of ountain hazards.\]
更新日期/Last Update: 1900-01-01