TY - EJOU
AU - Gan, Jianjun
AU - Zhang, Y. X.
TI - Numerical Simulation of Debris Flow Runout Using Ramms: A Case Study of Luzhuang Gully in China
T2 - Computer Modeling in Engineering \& Sciences
PY - 2019
VL - 121
IS - 3
SN - 1526-1506
AB - This study proposes a comprehensive method, which consists of field
investigation, flume test and numerical simulation, to predict the velocity and sediment
thickness of debris flow. The velocity and sediment thickness of the debris flow in
mountainous areas can provide critical data to evaluate the geohazard, which will in turn
help to understand the debris runout. The flume test of this debris prototype can provide
friction coefficient and viscosity coefficient which are important for numerical simulation
of debris flow. The relation between the key parameters in the numerical modelling using
the Voellmy model and debris-flow rheology is discussed. Through simulation of a debris
flow that occurred in Luzhuang gully, it is observed that the debris flow runout
determined by the Voellmy model was well consistent with that obtained from field
investigation and flume test, demonstrating the effectiveness of this study. The
relationship between the Voellmy model and debris flow runout is also proposed.
KW - Simulation approach
KW - debris flow
KW - flume test
KW - Voellmy model
KW - Luzhaung gully
DO - 10.32604/cmes.2019.07337