Comparative Study on Runoff and Sediment Yielding in Different Morphological Engineering Accumulations

ZHANG Wenbo; Lü Jiaorong; XIE Yongsheng; LUO Han

doi:10.13870/j.cnki.stbcxb.2020.03.008

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Comparative Study on Runoff and Sediment Yielding in Different Morphological Engineering Accumulations

更新时间：2025-03-12

- Comparative Study on Runoff and Sediment Yielding in Different Morphological Engineering Accumulations
- Vol. 34, Issue 3, Pages: 49-54(2020)
- 作者机构：
  
  1. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
  2. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2020.03.008
  CLC： S157.1
- Published：2020
- 稿件说明：
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ZHANG Wenbo, Lü Jiaorong, XIE Yongsheng, et al. Comparative Study on Runoff and Sediment Yielding in Different Morphological Engineering Accumulations[J]. 2020, 34(3): 49-54.
DOI：

ZHANG Wenbo, Lü Jiaorong, XIE Yongsheng, et al. Comparative Study on Runoff and Sediment Yielding in Different Morphological Engineering Accumulations[J]. 2020, 34(3): 49-54. DOI： 10.13870/j.cnki.stbcxb.2020.03.008.

摘要

通过室内模拟降雨试验，研究了二维平面和三维锥状两种堆积体坡面在不同砾石含量条件下的产流产沙特征。结果表明：（1）坡面流速和单位面积径流率随产流时间呈"快速增大—缓慢增大—稳定波动"的变化过程；（2）平均流速和单位面积平均径流率随砾石含量的增加而减小；砾石含量相同时，二维平面坡面的流速和径流率大于三维锥状坡面；（3）二维平面坡面剥蚀率随产流时间呈"稳定—减小—稳定波动"的变化过程；三维锥状坡面剥蚀率呈"增大—稳定波动"的变化过程；（4）单位面积侵蚀量随砾石含量的增加先增大后减小；砾石含量相同时，二维平面坡面的侵蚀量大于三维锥状坡面。

Abstract

In this paper

the characteristics of runoff and sediment yield of two-dimensional plane and three-dimensional cone-shaped slopes under different gravel contents were studied through the indoor simulated rainfall test.The results showed that: (1) The slope velocity and runoff rate per unit area showed a trend of "rapid increase

slow increase and stable fluctuation" with the runoff time. (2) The average flow velocity and average runoff rate per unit area decreased with the increase of gravel contents.When the gravel content was the same

the velocity and runoff rate of two-dimensional plane slope were larger than those of three-dimensional cone slope. (3) The denudation rate of two-dimensional plane slope presented a change process of "stable

decreasing and stable fluctuation" with the runoff time. The denudation rate of three-dimensional cone-shaped slope presented a process of "augmented

stable fluctuation". (4)The amount of erosion per unit area increased first and then decreased with the increase of gravel contents. With the same gravel content

the erosion amount of two-dimensional plane slope was larger than that of three-dimensional cone slope.

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