Mechanism of Siltation on Check Dam in West of Henan Province

Abstract:

To explore the deposition mechanism of check dam and provide the basis for layout of dam system, with tracing technology of caesium-137 and local rainfall data, the siltation time of each cyclic in the profile of south ditch check dam are confirmed based on the rule of heavy rain on large sand. Then regression analysis of sediment volume with the four indexes of erosive rainfall (R, I30, P and I) are made, the results show the first three indicators are main factors causing soil erosion. Furthermore, the model predicting sediment yield of the watershed is made by multiple regression analysis of sediment deposition with the three main factors. Finally, the neural network of RBF and BP are respectively applied regarding the three main indexes as input vectors to predict siltation and fit with actual value to testify what the model built is right.

• Periodical: Advanced Materials Research (Volumes 610-613)
• Pages: 1853-1858
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.610-613.1853
• Online since: December 2012
• Authors: Guo Zhong Wang, Jian Gang Qu, Rui Shuang, Ling Wang, Sui Ye Zhang
• Keywords: Caesium-137, Check Dam, Cyclic, Erosive Rainfall, Fitting, Neural Network (NN)

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DOI: 10.14711/thesis-b924499