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