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[1]CHEN Lei,XIE Yong-sheng,TIAN Fei,et al.Study on Runoff and Sediment Yield of Spoil-banks with Different Ratios of Soil to Rock under Simulated Rainfall Condition[J].Research of Soil and Water Conservation,2014,21(03):6-10.

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Study on Runoff and Sediment Yield of Spoil-banks with Different Ratios of Soil to Rock under Simulated Rainfall Condition

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 03 Page number: 6-10 Column: Public date: 2014-06-28

Title:: Study on Runoff and Sediment Yield of Spoil-banks with Different Ratios of Soil to Rock under Simulated Rainfall Condition

Author(s):: CHEN Lei¹, XIE Yong-sheng^1,2, TIAN Fei², JING Min-xiao²; 1. Institute of Soil and Water Conservation, Chinese Academy of Sciences and the Ministry of Water Resources, Yangling, Shaanxi 712100, China;
2. College of Natural Resources and Environment. Northwest A & F University, Yangling, Shaanxi 712100, China

Keywords:: simulated rainfall; spoil-bank; runoff; erosion

CLC:: S157.1

DOI:: -

Abstract:: In order to examine the differences of soil erosion characteristic of spoil-banks under different ratios of soil to rock, one of the four different types of spoilbanks was selected as research object based on previous research generalization, rolling compaction by construction machinery at the top of slope. The runoff and sediment characteristics of different ratios of soil to rock under four different rainfall intensities were studied by indoor artificial rainfall simulation experiments. The results showed that the initiative time of runoff of all spoilbanks decreased with the gravel content increasing; in the same ratio of soil to rock, runoff rate and erosion rate increased with the increase of rainfall intensities; in the same rainfall intensity, the runoff rate and erosion rate decreased with the decrease of ratio of soil to rock. The variation of runoff rate in a fluctuating tendency with the rainfall duration, while the erosion rate appeared in two types with the rainfall duration, which were stability and fluctuation. The mean runoff rate, mean erosion rate of different ratios of soil to rock of spoilbanks increased with the increase of gravel content; the total sediment increased with the increase of total runoff.

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