Sensitivity Analysis of Nonequilibrium Adaptation Parameters for Modeling Mining-Pit Migration
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Volume 136, Issue 10
Abstract
The nonequilibrium adaptation parameters of a depth-averaged two-dimensional hydrodynamic and sediment transport model were examined in the study. Calculated results were compared to data measured in two sets of published laboratory experiments that investigated mining-pit migration under well-controlled boundary conditions including steady flow and uniform rectangular cross sections along the flume except in the vicinity of the experimental mining area. The two sets of experiments were chosen as representatives of bed-load-dominated and suspended-load-dominated cases, respectively. A sensitivity analysis was conducted to estimate the influence of the nonequilibrium adaptation parameters on mining-pit migration simulation. Calculated results indicate that appropriate selection of the adaptation parameters is critical in order to close the nonequilibrium sediment transport formulas when modeling mining-pit migration.
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Acknowledgments
This study was funded by the U.S. Corps of Army Engineers (USACE), Department of Defense under the Urban Flood Demonstration Program of Arid and Semi-Arid Regions. We would also like to acknowledge the National Center for Computational Hydroscience and Engineering at the University of Mississippi for assistance with the CCHE2D model.
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Published In
Journal of Hydraulic Engineering
Volume 136 • Issue 10 • October 2010
Pages: 806 - 811
Copyright
© 2010 ASCE.
History
Received: Oct 10, 2008
Accepted: Mar 27, 2010
Published online: Mar 30, 2010
Published in print: Oct 2010
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