Estimation of debris flows triggered by surface landslides

2014 Fiscal Year Final Research Report

• Project/Area Number: 22248018
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Forest science
• Research Institution: Kyoto University
• Principal Investigator: KOSUGI Ken'ichirou 京都大学, (連合)農学研究科(研究院), 准教授 (30263130)
• Co-Investigator(Kenkyū-buntansha): MIZUYAMA Takahisa 京都大学, 農学研究科, 教授 (00229717) ; SATOFUKA Yoshifumi 立命館大学, 理工学部, 教授 (20215875) ; TSUTSUMI Daizo 京都大学, 防災研究所, 准教授 (40372552) ; MIYATA Shusuke 京都大学, 防災研究所, 助教 (80573378) ; KATSUYAMA Masanori 京都大学, 学際融合教育研究推進センター, 特定准教授 (40425426) ; SAYAMA Takahiro 独立行政法人土木研究所, 水災害リスクマネジメント国際センター, 研究員 (70402930) ; FUJIMOTO Masamitsu 立命館大学, 理工学部, 助教 (60511508)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 土砂災害 / 斜面崩壊 / 土石流

Outline of Final Research Achievements

For contributing to effective hard- and soft-counter measures against debris flows, this study clarified mechanisms of surface landslide occurrences and movements of collapsed materials, and developed estimating methods. It was found that, in addition to surface topography information, bedrock groundwater should be considered for accurate estimations of surface landslides. We combined ground-based electric resistivity measurements and airborne electromagnetic measurements for developing groundwater survey technique. Moreover, we confirmed that bedrock groundwater plays dominant rolls for the growth of debris flows.

Free Research Field

砂防学，山地保全学，森林水文学