[1]王帮团,徐则民,王帮圆,等.植被发育斜坡土体中根-土间隙的导流特性[J].山地学报,2015,(03):257.
　WANG Bangtuan,XU Zemin,WANG Bangyuan.The Diversion Characteristics of the Soilroot Interstice on a Vegetated Slope[J].Mountain Research,2015,(03):257.
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植被发育斜坡土体中根-土间隙的导流特性()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2015年03期
页码:
257
栏目:
山地研究
出版日期:
2015-06-01

文章信息/Info

Title:
The Diversion Characteristics of the Soilroot Interstice on a Vegetated Slope
作者:
王帮团;徐则民;王帮圆;
昆明理工大学地球科学系;昆明理工大学土木系;云南地质勘察设计研究院;
Author(s):
WANG Bangtuan; XU Zemin; WANG Bangyuan
1.Department of Earth Science，Kunming University of Science and Technology，Kunming 650093，China； 2.Department of Civil Engineering，Kunming University of Science and Technology，Kunming 650500，China； 3.Departent of Yunnan Geological Engineering Survey and Desig Institute, Kunming 650041，China
关键词:
植被发育斜坡; 滑坡; 降雨入渗; 根-土间隙
Keywords:
a vegetated slope; landslide; rainfall infiltration; soilroot interstice
分类号:
P642.11，S152.7,TU41
文献标志码:
A
摘要:
水分或溶液在土体中的迁移具有空间和时间上的异质性。以植被发育斜坡云南昭通头寨沟和昆明呈贡段家营为研究试验区,分别运用亚甲基蓝和罗丹明B溶液进行了多次染色示踪渗透试验,发现根-土间隙的导流现象十分明显,其导流作用很可能已经超过了传统的三类土体大孔隙。然而,国内外研究者对根-土间隙方面的研究还比较欠缺。为此,对根-土间隙宽度为0.5~3.0 mm,步长为0.5 mm流道内单相流体摩擦阻力系数和入渗速度进行了理论计算,并讨论了在同一流道和不同间隙流道内影响水分下渗速度的因素,结果表明:根-土间隙的大小对根-土间隙通道内流体的流动特性有着重要影响,随着间隙的减小摩擦阻力系数也相应减小;间隙对流动阻力系...
Abstract:
The moisture or solution migration in soil with heterogeneity in space and time.This paper based on the distribution and vegetation development test area of Touzhai Gully（in Zhaotong of Yunnan，China） and Duanjiaying （in Cheng’gong of Yunnan，China）as the research background，In the experimental area，respectively using methylene blue and rhodamine B solution dyed tracer penetrant test many times and found that the diversion phenomenon is very obvious，the diversion function is likely more important than the traditional three kinds of soil macropore，however，the research of soilroot interstice is relatively lacking at home and abroad. The theoretical calculation was performed to predict the speed of the fluid and the flow characteristics for the developed flow in soilroot interstice with the gap size of 0.5~3.0 mm，the step length is 0.5 mm.The calculation results are in good agreement with experimental data. In addition，the gap size of the soilroot interstice has great impact upon the flow characteristics. The decrease of the gap size reduces the friction factor，and discussed the influence factors of water infiltration in the same channel and different interstice width .The results show that the higher the Reynolds number，the larger the effect of the gap size upon the friction coefficient during singlephase flowing through the soilroot interstice；the effect of the gap size upon the friction coefficient depends on the Reynolds number，and will decrease with the decrease of the Reynolds number. The soilroot interstice width of vegetation development in soil slope are mainly concentrated in 0.5~1.0 mm in Touzhai，the speed of water infiltration is the range of 0.014~0.014 mm/s. On the same area，the infiltration rate of Touzhai Gully test area is 26.28 times to Duanjiaying test area.The existence of soilroot interstice，greatly promoted the rapid infiltration of the soil moisture，the results show that the contribution of soilroot interstice macropore to the landslide preparation is notable.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2014-06-09；改回日期(Accepted)：2014-08-02。
基金项目(Foundation item)：国家自然科学基金-云南联合基金重点项目（U1033601）；高等学校博士学科点专项科研基金（20135314110005）。[The National Natural Science Foundation of China-Yunnan Joint Fund and Research Fund for the Doctoral Program of Higher Education of China.]
作者简介（Biography）：王帮团(1985-)，男，云南昭通人，硕士研究生，主要从事水文地质与工程地质方面研究。[Wang Bangtuan(1985-),male,born in Zhaotong,Yunnan,Graduate student,major in hydrogeology and engineering geology research.]E-mail:wangbangtuan0910@163.com *
通信作者(Corresponding author)：徐则民(1963-)，男，教授，博士生导师，主要从事滑坡灾害孕育过程方面研究。[Xu Zemin(1963-)，male,professor,mainly engaged in the process of landslide disaster preparation.]E-mail:abc5100@188.com
更新日期/Last Update: 1900-01-01