数値移動床による格子型砂防ダム閉塞過程のシミュレーション NUMERICAL SIMULATION OF BLOCKING PROCESS OF GRID-TYPE DAM BY DEBRIS FLOW
Access this Article
A maximum diameter of sediment passing a grid is one of the most important condition of a design of grid-type dam. The model which can handle a collision and a contact between sediment particles is effective for a estimation of the blocking limit. Because a contact process of a grid and sediment shows remarkable three dimension characteristics, an introduction of 3D model is required. In this paper, a 3D distinct element method code is introduced to reproduce a blocking limit in previous experiments. A mechanism of a blocking is discussed from the viewpoint of a computational dynamics by estimating a spatial distribution of contact force between sediment particles.
- PROCEEDINGS OF HYDRAULIC ENGINEERING
PROCEEDINGS OF HYDRAULIC ENGINEERING (50), 739-744, 2006
Japan Society of Civil Engineers