Experimental study on rainfall-runoff process and sediment erosion on steep slopes in mountain regions

童晓霞; 崔远来; 邵东国; 李建明; 丁文峰; 张冠华; 陈锦阳

doi:10.11660/slfdxb.20241107

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Experimental study on rainfall-runoff process and sediment erosion on steep slopes in mountain regions

更新时间：2026-07-22

- Experimental study on rainfall-runoff process and sediment erosion on steep slopes in mountain regions
- Journal of Hydroelectric Engineering Vol. 43, Issue 11, (2024)
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- DOI：10.11660/slfdxb.20241107
  CLC：
- Online First：25 November 2024，
  
  Published：2024
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童晓霞, 崔远来, 邵东国, et al. Experimental study on rainfall-runoff process and sediment erosion on steep slopes in mountain regions[J]. Journal of Hydroelectric Engineering, 2024, 43(11).
DOI：

童晓霞, 崔远来, 邵东国, et al. Experimental study on rainfall-runoff process and sediment erosion on steep slopes in mountain regions[J]. Journal of Hydroelectric Engineering, 2024, 43(11). DOI： 10.11660/slfdxb.20241107.

摘要

为弄清雨强、土层厚度分布和土层底部透水性交互作用对山区陡坡坡面产流产沙过程影响规律，本文基于4种设计土槽进行室内模拟连续降雨试验。结果表明：地表径流率在连续降雨过程中呈明显波动上升趋势，侵蚀速率均值在连续降雨过程中呈现先增加后减小的趋势。地表径流率主要受到雨强的影响，方差贡献率达88.85%，侵蚀速率主要受到雨强以及土层厚度分布和雨强的交互影响，方差贡献率分别为46.13%和20.64%，土层厚度分布和土层底部透水性的交互作用对侵蚀速率也有一定影响，方差贡献率为9.21%。因此，除考虑雨强外，还应兼顾考虑土层厚度分布、土层底部透水性及其交互作用对产流产沙过程的影响。本研究可为山区坡面复杂下垫面条件下的坡面产流产沙机理提供理论支撑。

Abstract

In this work

we conduct a laboratory experiment to simulate continuous rainfall based on four designed soil tanks to clarify the interaction effects of different rainfall intensities

soil layer thickness distribution

and soil base permeability on runoff generation and sediment erosion on hillslopes. The results show that the surface runoff rate takes an increasing trend with significant fluctuations during continuous rainfall

and the average erosion rate shows a trend of increasing first and then decreasing. The surface runoff rate is influenced mainly by rainfall intensity

with a variance contribution rate of 88.85%; the erosion rate is affected primarily by rainfall intensity and its interaction with soil layer thickness distribution

with variance contribution rates of 46.13% and 20.64%

respectively. And the interaction between soil layer thickness distribution and soil base permeability also has a certain impact on the erosion rate

with a variance contribution rate of 9.21%. Therefore

besides rainfall intensity

we should consider the factors of soil layer thickness

soil base permeability

and their interactive effects on the runoff and sediment yield process. This study would lay a basis for understanding the mechanisms of runoff generation and sediment erosion on hillslopes under complex underlying conditions.

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