Japan Geoscience Union Meeting 2019

Presentation information

[E] Poster

H (Human Geosciences ) » H-DS Disaster geosciences

[H-DS09] Landslides and related phenomena

Tue. May 28, 2019 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Masahiro Chigira(Disaster Prevention Research Institute, Kyoto University), Gonghui Wang(Disaster Prevention Research Institute, Kyoto University), Fumitoshi Imaizumi(Faculty of Agriculture, Shizuoka University)

[HDS09-P15] Deformation of slope models with different orientations of weak planes

*taeyuan tseng1, Kuang-Tsung Chang1 (1.National Chung Hsing University)

Keywords:cataclinal slope, analcinal slopes, rainfall, Particle Image Velocimetry (PIV), weak planes, deformation

Weak planes influence failure and deformation of slopes. We conducted experiments to simulate slopes of different orientations of weak planes, including cataclinal and analcinal slopes with 30° and 60° inclination angles of weak planes. We stacked artificial bricks to make small-sized slope models. The artificial bricks were made of gypsum, sand, cement and water with different weight proportion. In view of the scaling law, the artificial bricks were made less strength than natural rocks. The slope models were weakened under rainfall, resulting in deformation and final collapse. The slope deformation processes were photographed by a camera, and the displacement vector fields were analyzed using the Particle Image Velocimetry (PIV). The deformation and accumulated displacements were compared between slopes of different orientations of weak planes.