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Experimental study on the discharge characteristics of viscous debris flow with grid-type dam

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Abstract

Experimental tests were conducted on a rectangular flume with different grid-type dam grid sizes, channel slopes and debris flow bulk density. We use the Bernoulli equation of energy conservation to deduce a formula to calculate debris-flow discharge. By combining the flume experiments with dimensional analysis methods, we mainly consider the bulk density of the debris flow, grid size of the grid-type dam, and flume slope to establish the discharge-coefficient correction formula and propose a method of calculating debris-flow discharge through a grid-type dam. The practical value of the formulas was illustrated using the Niwan gully, a tributary of Bailong River in Gansu province, China, as an example, which can be used as a reference in further practical engineering applications.

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Acknowledgements

This study was funded by the National Key Research and Development Program of China (Grant No. 2020YFD1100701), the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA23090403) and the Application Basic Research Program of Sichuan Province (Grant No. 2019YJ0005). We thank Liwen Bianji, Edanz Editing China (www.liwenbianji.cn/ac), for editing the English text of a draft of this manuscript.

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Authors and Affiliations

  1. Key Laboratory of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, #.9, Block 4, Renminnanlu Road, Chengdu, 610041, China

    Jinfeng Liu, Dong Yuan, Ming Lu & Yong You

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Ming Lu

  3. China Railway Eryuan Engineering Group Co. LTD, Chengdu, 610031, China

    Dong Yuan, Guangze Zhang, Tao Feng, Dong Wang & Zhiheng Lin

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  1. Jinfeng Liu
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Correspondence to Jinfeng Liu.

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Liu, J., Yuan, D., Lu, M. et al. Experimental study on the discharge characteristics of viscous debris flow with grid-type dam. Environ Fluid Mech 21, 1253–1271 (2021). https://doi.org/10.1007/s10652-021-09819-0

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