Pursuit of mechanism of slope failures and slope disaster countermeasures with reduced environmental load
| Reference No. | 20210016 |
|---|---|
| Type/Category | Grant for Project Research-Short-term Joint Research |
| Title of Research Project | Pursuit of mechanism of slope failures and slope disaster countermeasures with reduced environmental load |
| Principal Investigator | Hemanta Hazarika（Faculty of Engineering, Kyushu University・Professor） |
| Research Period |
September 11,2021. ～
September 11,2021. December 4,2021. ～ December 4,2021. January 21,2022. ～ January 21,2022. |
| Keyword(s) of Research Fields | Slope failure, Richards equation, Disaster prevention countermeasures, Early warning and evacuation information system |
| Abstract for Research Report |
Many lives and property are lost every year due to frequent and severe heavy rain disasters. Sediment-related disaster countermeasures are taken up as the most important issue in the National Resilience Annual Plan 2020 formulated by the Cabinet Office. The purpose of this study is to pursue sustainable prevention measures for slope disasters caused by heavy rain. (1) "Pursuit of slope failure mechanism" The increase in pore water pressure in the ground is a direct cause of slope failure. Using the Richards equation as a norm, the dynamics of rainwater infiltration into the ground are modeled by partial differential equations, and a numerical calculation scheme with high calculation efficiency is constructed. Develop numerical calculation software and use it as a means of forecasting. Furthermore, from among various precursory phenomena of slope failure, effective evaluation indexes for the occurrence of slope failure will be examined. (2)"Short-term slope disaster countermeasures" Develop sensors that capture changes in pore water pressure, displacement, and water content in the ground as the pore water pressure increases. In addition, an indoor model experiment will be conducted to evaluate its performance, and indicators will be devised together with statistical methods based on the results. By developing low-cost and sustainable sensor platforms and constructing these communication systems, we aim to catch the precursory phenomenon of slope failure at an early stage and provide a useful early warning and evacuation information system to the national and local governments. |
| Organizing Committee Members (Workshop) Participants (Short-term Joint Usage) |
Hemanta Hazarika（Faculty of Engineering, Kyushu University・Professor） |