TY - JOUR AU - Yuuki Arimitsu, AU - Masamitsu Fujimoto, AU - Nobutaka Hiraoka, AU - Toru Danjo, AU - Yuko Ishida, AU - Ryoichi Fukagawa, PY - 2017/02/11 Y2 - 2024/03/28 TI - CHARACTERISTICS OF RAIN INFILTRATION IN SOIL LAYERS ON THE HILLSLOPE BEHIND IMPORTANT CULTURAL ASSET JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 10 IS - 22 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/2018 SP - 2109-2115 AB - <p>Recently, slope failures have occurred due an increase of heavy rainfall and typhoon events.<br>As typical examples, sediment disasters have occurred frequently at Kiyomizu-dera Temple, including debris<br>flows in 1972 and shallow slope failures in 1999 and 2013. Kiyomizu-dera temple is a UNESCO World<br>Heritage Site, and one of the Historic Monuments of Ancient Kyoto, Japan. An increase in shear stress and<br>decrease in shear strength due to infiltration of rainwater led to slope failures. In this study, subsurface water<br>movements were investigated by measuring pore water pressure changes and hydraulic gradients during<br>rainfall events to prevent damage to important cultural assets by natural disasters. Saturation was found to<br>occur after very small rainfall events, regardless of soil moisture conditions. Although subsurface water<br>normally flows from upper to lower areas of the slope, water movements from the bedrock to the soil layer<br>were observed during rainfall events, suggesting the existence of potentially hazardous slope failure<br>conditions.<br>Keywords: Slope Failure, Pore Water Pressure, Hydraulic Gradient, Infiltration of Rain Water</p> ER -