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

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 dimensio...

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Published inEnvironmental fluid mechanics (Dordrecht, Netherlands : 2001) Vol. 21; no. 6; pp. 1253 - 1271
Main Authors Liu, Jinfeng, Yuan, Dong, Lu, Ming, You, Yong, Zhang, Guangze, Feng, Tao, Wang, Dong, Lin, Zhiheng
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.12.2021
Springer Nature B.V
Subjects
Bulk density
Classical Mechanics
Dams
Debris flow
Detritus
Dimensional analysis
Discharge
Earth and Environmental Science
Earth Sciences
Energy conservation
Environmental Physics
Flumes
Formulas (mathematics)
Gullies
Hydrogeology
Hydrology/Water Resources
Mathematical analysis
Oceanography
Original Article
Slopes
Tributaries
Theoretical analysis
Discharge characteristics
Viscous debris flow
Flume experiment
Grid-type dam
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Summary: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.
ISSN:1567-7419
1573-1510
DOI:10.1007/s10652-021-09819-0