Effects of Gravel Content on Rill Cross Section Morphological in Colluvial Deposit Slope

ZHANG Haidong; CHEN Peisong; LIN Jiahui; JIANG Fangshi; SI Xiaojing; LIN Jinshi; GUO Yucheng; TANG Yadi; HUANG Yanhe

doi:10.13870/j.cnki.stbcxb.2019.04.012

您当前的位置：

首页 >

文章列表页 >

Effects of Gravel Content on Rill Cross Section Morphological in Colluvial Deposit Slope

更新时间：2025-03-12

- Effects of Gravel Content on Rill Cross Section Morphological in Colluvial Deposit Slope
- Vol. 33, Issue 4, Pages: 81-86(2019)
- 作者机构：
  
  福建农林大学资源与环境学院, 福建省土壤环境健康与调控重点实验室,福州,350002
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2019.04.012
  CLC： S157.1
- Published：2019
- 稿件说明：
移动端阅览
ZHANG Haidong, CHEN Peisong, LIN Jiahui, et al. Effects of Gravel Content on Rill Cross Section Morphological in Colluvial Deposit Slope[J]. 2019, 33(4): 81-86.
DOI：

ZHANG Haidong, CHEN Peisong, LIN Jiahui, et al. Effects of Gravel Content on Rill Cross Section Morphological in Colluvial Deposit Slope[J]. 2019, 33(4): 81-86. DOI： 10.13870/j.cnki.stbcxb.2019.04.012.

摘要

为研究砾石含量对崩积体坡面细沟侵蚀的影响，采用室内放水冲刷试验，研究了30°坡面下不同冲刷流量（2，4，8，12 L/min）对4种土石混合崩积物（0，10%，30%，50%砾石质量比例）冲刷过程中细沟横断面形态特征。结果表明：（1）随冲刷时间的增加，深度增加速度大于宽度增加速度，横断面向窄而深发展。（2）坡顶细沟横断面深度较大，接近"V"形，侵蚀严重；坡底细沟横断面深度较小，侵蚀较弱；细沟横断面形态指标η随坡长增加出现波动变化。（3）横断面深度随砾石含量增加总体呈先减小后增大趋势，10%砾石含量坡面细沟深度最小；10%砾石含量坡面细沟横断面形态指标η变化范围最大；临空面在10~15 cm深度开始发育，低砾石含量土壤更有利于临空面发育。

Abstract

In order to explore the influence of gravel content on rill erosion of colluvial deposit slope

the combination souring tests were conducted. This paper studied the morphological characteristics of rill cross section during scouring of four kinds of soil-rock mixed colluvial (gravel mass ratios of 0

10%

30% and 50%

respectively) with different scouring flow rates (2

8 and 12 L/min

respectively) under slope gradient of 30°. The results showed that:(1) With the increase of scouring time

the increasing speed of depth was greater than that of width

which made the shape of rill cross section develop toward narrow and deep. (2) The depth of rill cross section was large on the top of slope

which was similar to the "V" shape

and the erosion was severe. The depth of rill cross section was small on the bottom of slope and the erosion was relatively mild. The morphological index η of rill cross section fluctuated as the increase of slope length. (3) With the increase of gravel contents

the depth of cross section decreased first and then increased. The depth of rill was shallowest on the slope with 10% gravel content. The morphological variability of cross section was maximum on the slope with 10% gravel content. The free surface began to develop at the depth of 10~15 cm

and the soil with low gravel content was more conducive to the development of the free surface.

关键词

Keywords

references

王礼先.中国水利百科全书.水土保持分册[M].北京:中国水利水电出版社,2004.

Lin J S, Huang Y H, Wang M K, et al. Assessing the sources of sediment transported in gully systems using a fingerprinting approach:An example from South-east China[J].Catena,2015,129:9-17.

Jiang F S, Huang Y H, Wang M K, et al. Effects of rainfall intensity and slope gradient on steep colluvialdepositerosion in southeast China[J].Soil Science Society of America Journal,2014,78(5):1741-1752.

蒋芳市,黄炎和,林金石,等.坡面水流分离崩岗崩积体土壤的动力学特征[J].水土保持学报,2013,27(1):86-89.

Liu X L, Tang C, Zhang D L. Simulated runoff processes on colluvial deposits of Liantanggang Benggang and their water distributions[J].Transactions of the Chinese Society of Agricultural Engineering,2015,31(11):179-185.

Jiang F S, Zhan Z Z, Chen J L, et al. Rill erosion processes on a steep colluvial deposit slope under heavy rainfall in flume experiments with artificial rain[J].Catena,2018,169:46-58.

沈海鸥,郑粉莉,温磊磊.细沟发育与形态特征研究进展[J].生态学报,2018,38(19):35-42.

王健,李鹤,孟秦倩,等.黄土坡面细沟横断面形态及其水流动力学与挟沙特性[J].水土保持学报,2015,29(3):32-37.

马小玲,张宽地,杨帆,等.坡面细沟侵蚀断面形态发育影响因素分析及动力特性试验[J].农业工程学报,2017,33(4):217-224.

李响,邓青春,张斌,等.元谋干热河谷微流域细沟形态特征及控制因素[J].中国水土保持科学,2015,13(5):24-30.

郝好鑫,郭忠录,李朝霞,等.红壤坡面细沟横断面形态及水动力学特性研究[J].长江流域资源与环境,2018,27(2):363-370.

沈海鸥,郑粉莉,温磊磊,等.降雨强度和坡度对细沟形态特征的综合影响[J].农业机械学报,2015,46(7):162-170.

蒋芳市,陈培济,黄炎和,等.集中水流下土石混合崩积体坡面侵蚀水动力特征试验研究[J].水土保持学报,2017,31(6):8-14.

陈俊杰,孙莉英,刘俊体,等.坡度对坡面细沟侵蚀的影响:基于三维激光扫描技术[J].中国水土保持科学,2013,11(3):1-5.

吴永红,王愿昌,刘斌,等.黄土坡面的土壤侵蚀波动性[J].中国水土保持科学,2005,3(2):28-31.

李君兰,蔡强国,孙莉英,等.坡面水流速度与坡面含砂量的关系[J].农业工程学报,2011,27(3):73-78.

王小燕,王天巍,蔡崇法,等.含碎石紫色土坡面降雨入渗和产流产沙过程[J].水科学进展,2014,25(2):189-195.

王雪松,谢永生,陈曦,等.模拟降雨条件下工程堆积体产流产沙特征研究[J].泥沙研究,2015(4):74-80.

蒋芳市,黄炎和,林金石,等.多场次降雨对崩岗崩积体细沟侵蚀的影响[J].中国水土保持科学,2014,12(6):1-7.

Views

1190

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effects of Content and Size of Gravel on Soil Permeability of the Colluvial Deposit in Benggang

Experimental Study on the Drop Pit Development of Rill Erosion on Soil-rock Mixed Colluvial Deposit Slopes

Experimental Study on Erosion Hydrodynamic Characteristics of Concentrated Flow on Earth-rock Mixed Colluvial Deposit Slopes

Effects of Slop and Flow on Sediment Transport Capacity of the Colluvial Deposit for Rill Flow in Benggang

Empirical Model of Rill Erosion Processes and Sediment Transport Capacity in Alpine Soil under Freeze-Thaw Action

Related Author

詹振芝

黄炎和

蒋芳市

林金石

李歆博

王晓妍

蔡佳翔

JIANG Fangshi

Related Institution

Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resource and Environment, Fujian Agriculture and Forestry University

College of Resources and Environment, Fujian Agriculture and Forestry University

Office of Anxi County Water and Soil Conservation Committee, Anxi

Institute of Urban Environment, Chinese Academy of Sciences

Fujian Key Laboratory of Soil Environment Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University

⁰