[1]陈舜,王道杰,梅永丽,等.泥石流源区崩滑土体粒度特征及其产沙特性[J].山地学报,2014,(01):66.
　CHEN Shun,WANG Daojie,MEI Yongli,et al.The Research of Grain Composition and Sediment Generation on Landslipcollapse Soil in Debris Flow Original Area[J].Mountain Research,2014,(01):66.
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泥石流源区崩滑土体粒度特征及其产沙特性()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2014年01期
页码:
66
栏目:
山地灾害
出版日期:
2014-01-01

文章信息/Info

Title:
The Research of Grain Composition and Sediment Generation on Landslipcollapse Soil in Debris Flow Original Area
作者:
陈舜；王道杰；梅永丽；陈晓艳；张淑娟
1.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，四川 成都 610041；
2.中国科学院大学，北京 100049； 3昆明市东川区林业局，云南 昆明 654100
Author(s):
CHEN Shun; WANG Daojie; MEI Yongli; CHEN Xiaoyan; ZHANG Shujuan
1. Key Laboratory of Mountain Hazards and Earth Surface Processes，Chinese Academy of Sciences / Institute of Mountain Hazards and Environment，Chinese Academy of Science & Ministry of Water Conservancy，Chengdu 610041，China；
2. University of Chinese Academy of Sciences，Beijing 100049，China;
3.Dongchuan Forestry Bureau,Kunming 654100,China
关键词:
泥石流源区; 崩滑土体; 粒度分布; 产沙特性
Keywords:
debris flow original area; landslipcollapse soil; grain size distribution; characteristics of sediment yield
分类号:
P642.1，S157.1
文献标志码:
A
摘要:
泥石流形成与崩滑土体的存在密切相关,大量崩滑土体堆积在泥石流源区,为泥石流形成提供了丰富的固体物质。通过对云南东川蒋家沟泥石流源区崩滑土体的粒度特征分析,探讨了源区崩滑土体粒度特征与泥石流颗粒组成的关系。结果表明,源区崩滑土体和泥石流机械组成相似,粒度分布主要为单峰分布,说明泥石流粒度组成继承了源区崩滑土体的性质。同时对源区崩滑土样进行室内小型水槽冲刷实验,研究其产沙特性,分析表明:一定流量的径流冲刷作用下,崩滑土体的产沙过程满足关系式y=a+bt-1+ct-2,土体的抗冲系数k与大于2 mm的砾石含量和小于0.005 mm的黏粒含量相关,呈现出分别随着二者含量的增加而先增大后减小的变化趋势。
Abstract:
Large numbers of landslides and collapses happened frequently in the debris flow original area，and supplied sufficient materials for debris flow. Based on landslipcollapse soil samples from debris flow original area in Jiangjia Gully，of Yunnan,China analysis of grain composition was performed to discuss the relationship of grain composition between landslipcollapse soils and debris flows. According to the experimental data，it was found that both of them can be characterized by a wideranged distribution of grain size，and characteristics of particle composition have similar distribution form，meanwhile the grain size distribution curves are single peak，by analyzing the gradation curve. Moreover，a series of small flume experiments were carried out，which was used to investigate the sediment yield mechanism of landslipcollapse soil in the source. Research results revealed the relationship between sediment yield and scouring time can be expressed as: y=a+bt-1+ct-2，which indicated that the sediment yield decrease by the second power function with the increment of scouring time. Antiscouring coefficient of landslipcollapse soils，which was proposed to describe soil antiscour ability，increases with increment of coarsegrained(>2 mm) contents and clay(<0.005 mm) contents，rising to the maximum at contents equal 63%，1.5%，respectively，decreasing exceeded 63%，1.5%，respectively.

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[2]季宪军,欧国强,杨顺,等.崩滑土体坡面运动过程研究现状与展望[J].山地学报,2012,(03):361.
　JI Xianjun,OU Guoqiang,YANG Shun,et al.Research Status and Prospect on Moving Process of Landslipcollapse Soil along Slope[J].Mountain Research,2012,(01):361.
[3]陈宁生,张军.泥石流源区弱固结砾石土的渗透规律[J].山地学报,2001,(02):169.

备注/Memo

备注/Memo:
收稿日期(Received date)：2013-06-09；改回日期(Accepted) : 2013-08-03。
基金项目（Foundation item）：国家科技支撑计划课题（2012BAC06B02），中国科学院山地灾害与地表过程重点实验室重点科研项目（Y3K2040040）。[This research is supported by National Technology R&D Program （0BAC06B02）and the Key Research Program of Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences（Y3K2040040）.]
作者简介（Biography）：陈舜（1986-），男，四川安岳人，硕士研究生，主要从事滑坡泥石流产沙机理研究。[Chen Shun, male, born in 1986, Anyue of Sichuan province, master, mainly engaged in sediment yield of landslide and debris flow.] *
通信作者（Corresponding author）：王道杰（1968-），男，四川成都人，研究员，主要从事水土保持及生态修复研究。[Wang Daojie, male, born in 1968, Chengdu of Sichuan province, doctor, mainly engaged in water and soil conservation, and ecological restoration.]
更新日期/Last Update: 1900-01-01