Debris flows often cause substantial losses to human life and the economy. Damage can be effectively reduced using numerical simulation models, which can describe the debris flow process and determine possible effects of sabo dams, or erosion and sediment control dams. However, non-experts find it very difficult to run simulations independently, because the systems do not currently have an efficient user interface. We developed a system that produces one-and two-dimensional debris flow simulations and is equipped with a graphical user interface (GUI). The system is based on an integration model and employs onedimensional simulations for gully areas and two-dimensional simulations for alluvial fan areas, and then considers their mutual influence in boundary areas between gullies and alluvial fans. The system was developed with "MS Visual Basic.NET." Data can be input using a mouse and be checked on the monitor, users can see real-time visualized images of the debris flow during the simulation. The interface enables non-expert users to run the debris-flow simulation independently, enabling better solutions for sabo engineering.
This paper presents a summary of the element test simulations (calibration simulations) submitted by 11 numerical simulation (prediction) teams that participated in the LEAP-2017 prediction exercise. A significant number of monotonic and cyclic triaxial (Vasko, An investigation into the behavior of Ottawa sand through monotonic and cyclic shear tests.
This paper presents comparisons of 11 sets of Type-B numerical simulations with the results of a selected set of centrifuge tests conducted in the LEAP-2017 project. Time histories of accelerations, excess pore water pressures, and lateral displacement of the ground surface are compared to the results of nine centrifuge tests. A number of numerical simulations showed trends similar to those observed in the experiments. While achieving a close match to all measured responses (accelerations, pore pressures, and displacements) is quite challenging, the numerical simulations show promising capabilities that can be further improved with the availability of additional high-quality experimental results.
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