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[1]ZHANG Xiang,GAO Zhaoliang,LU Xi.Rill Morphological Characteristics and Distribution Characteristics on Lou Soil Mound[J].Research of Soil and Water Conservation,2019,26(05):53-59.

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Rill Morphological Characteristics and Distribution Characteristics on Lou Soil Mound

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 05 Page number: 53-59 Column: Public date: 2019-09-06

Title:: Rill Morphological Characteristics and Distribution Characteristics on Lou Soil Mound

Author(s):: ZHANG Xiang¹, GAO Zhaoliang², LU Xi¹; 1. Research Institute of Sponge City, Pingxiang University, Pingxiang, Jiangxi 337000, China;
2. Institute of Soil and Water Conservation, Yangling, Shaanxi 712100, China

Keywords:: lou soil; engineering mound; runoff scouring; rill morphology

CLC:: S157.1

DOI:: -

Abstract:: A field water-scouring experiment was conducted with different slope lengths and slope gradients in order to explore rill morphological characteristics and distribution characteristics on lou soil mound. The results show that the width of rill increases first and then tends to be stable with time. There is a quadratic function relationship between rill width and slope length. The depth of the rill continues to increase with time, and the relationship between the rill depth and time can be well described by a linear function. Both the rill depth and sectional area of the rill response to the change of slope length, no significant functional relationship between them is found. The rill width-depth ratio decreases rapidly first and then tends to be stable with time. The sectional area of the rill increases with time. The relationship between the sectional area of the rill and the time can be described by a linear function. The distribution of the rill width on the slope is not uniform, showing diversity. On the whole, the distribution characteristics of rill depth follow a rule of decreasing rapidly first and then maintaining stability. In view of the fact that the accumulation platform surface collects the runoff and flushes the slope surface, reasonable control measures should be laid on the top half slope of the mound.

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