Comparative Analysis on Riverbed Erosion and Deposition Amount Calculated by Different Methods

DUAN Guang-lei; PENG Yan-bo; GUO Man-jiao

doi:10.3969/j.issn.1001-5485.2014.02.021

PDF(1533 KB)

Journal of Changjiang River Scientific Research Institute ›› 2014, Vol. 31 ›› Issue (2) : 108-113,118. DOI: 10.3969/j.issn.1001-5485.2014.02.021

Comparative Analysis on Riverbed Erosion and Deposition Amount Calculated by Different Methods

DUAN Guang-lei, PENG Yan-bo, GUO Man-jiao

Author information +

History +

Abstract

In practice, the amount of riverbed erosion and deposition in the same reach or in the same period calculated by different methods differs significantly from each other. At present, the calculation methods by using cross-section morphological variation, DEM grid morphological variation, and sediment balance are widely used. The amount of riverbed erosion and deposition in the reach from Yichang to Jianli of Yangtze River downstream of Three Gorges Project after impoundment was calculated using the above mentioned three methods based on topographic map, cutting cross-section on topographic map and sediment data of hydrologic stations. Furthermore, the calculation results and the factors affecting the calculation accuracy were analyzed, and the nonlinear fractal theory wasused to study the relation between riverbed fluctuation degree and section’s representativeness. Research results suggest that to improve the sediment balance method, suspended load near riverbed needs to be modified, and the alignment error of sediment measurement, water imbalance, sand mining and sediment diversion should be taken into consideration; as for the method of cross-section’s morphological variation, relatively close sections must be laid in river bends, bifurcated reaches or contractive and expansive reaches; while appropriate interpolation method must be employed for the method of grid morphological variation, and the grid space should be no larger than the distance between measuring points.

Key words

riverbed / erosion-deposition amount / calculation method / fractal dimension

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

DUAN Guang-lei, PENG Yan-bo, GUO Man-jiao. Comparative Analysis on Riverbed Erosion and Deposition Amount Calculated by Different Methods[J]. Journal of Changjiang River Scientific Research Institute. 2014, 31(2): 108-113,118 https://doi.org/10.3969/j.issn.1001-5485.2014.02.021

References

[1] 申冠卿,姜乃迁,张原锋,等. 黄河下游断面法与沙量法冲淤计算成果比较及输沙率资料修正[J]. 泥沙研究,2006,(1):32-37. (SHEN Guan-qin,JIANG Nai-qian,ZHANG Yuan-feng, et al. Comparison of the Calculated Sedimentation Amount by Different Methods in the Lower Yellow River[J]. Journal of Sediment Research,2006,(1):32-37.(in Chinese))

[2] 程龙渊,刘拴明,肖俊法,等. 黄河下游河道冲淤量计算问题研究[J],人民黄河,1998,20(2):4-7.(CHENG Long-yuan,LIU Shuan-ming,XIAO Jun-fa,et al. Research on the Problem for Calculating the Sedimentation Amount in the Lower Yellow River[J]. Yellow River,1998,20(2):4-7.(in Chinese))

[3] 李义天,邓金运,孙昭华,等. 输沙量法和地形法计算螺山汉口河段淤积量比较[J]. 泥沙研究,2002,(4): 20-24. (LI Yi-tian,DENG Jin-yun,SUN Zhao-hua,et al. Comparison of Sedimentation Amount in the Reach from Luoshan to Hankou by Sediment Method and Topographical Method[J]. Journal of Sediment Research, 2002,(4): 20-24.(in Chinese))

[4] 董耀华. 输沙量法与地形法估算河道冲淤量的对比研究[J]. 长江科学院院报,2009,26(8):1-5.(DONG Yao-hua. Contrast Study on Estimation of River Deposition-Erosion Amount by Sediment Budget Method and Morphological Change Method[J]. Journal of Yangtze River Scientific Research Institute, 2009,26(8):1-5.(in Chinese))

[5] 何必. 基于克里金法的数字高程模型插值研究[J]. 科技信息,2011,(9):22-31.(HE Bi. Research on the Interpolation of DEM Based on Kriging[J]. Science and Technology Information, 2011,(9):22-31.(in Chinese))

[6] 靳国栋,刘衍聪,牛文杰. 距离加权反比插值法和克里金插值法的比较[J]. 长春工业大学学报,2003,24(3):53-57. (JIN Guo-dong, LIU Yan-cong, NIU Wen-jie. Comparison between Inverse Distance Weighting Method and Kriging[J]. Journal of Changchun University of Technology, 2003,24(3):53-57.(in Chinese))

[7] 罗亦泳,张立亭,陈竹安,等. 基于Surfer的数据网格化与体积计算精度分析[J]. 测绘科学,2009,34(5): 97-99. (LUO Yi-yong, ZHANG Li-ting, CHEN Zhu’an, et al. Precision Analysis of Data Gridding and Calculation Volume Based on Surfer[J]. Science of Surveying and Mapping, 2009,34(5): 97-99. (in Chinese))

[8] 韩其为. 粗颗粒悬移质测验误差分析[J]. 水文,2008,28(1):1-6. (HAN Qi-wei. Error Analysis of Coarse Suspended Load Measuring[J]. Journal of Hydrology, 2008,28(1):1-6. (in Chinese))

[9] 长江水利委员会水文局. 2006—2007年度临底悬移质输沙观测试验成果分析[R]. 武汉:长江水利委员会水文局,2007. (Bureau of Hydrology of Changjiang Water Resources Commission. Analysis on the Test Result of Suspended Load near Riverbed from 2006 to 2007[R]. Wuhan:Bureau of Hydrology of Changjiang Water Resources Commission,2007.(in Chinese))

[10]长江水利委员会水文局荆江水文水资源勘测局. 2011年度沙市站临底悬移质泥沙观测试验成果分析报告[R]. 荆州:长江水利委员会水文局荆江水文水资源勘测局,2012. (Jingjiang Bureau of Hydrology and Water Resources Survey under Bureau of Hydrology of Changjiang Water Resources Commission. Analysis on the Test Result of Suspended Load near Riverbed in Shashi Station in 2011[R]. Jingzhou: Jingjiang Bureau of Hydrology and Water Resources Survey under Bureau of Hydrology of Changjiang Water Resources Commission,2012.(in Chinese))