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Slope Conservation Lab
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The lab works to build a safer society by uncovering the mechanisms of slope failures and landslides.
AboutAbout the lab
Putting Slope Environmental Science to Work for a Disaster-Reduction Society
The Slope Conservation Lab aims to clarify the mechanisms by which slope failures, landslides, and debris flows occur, and to contribute to a safer society.
Based on the results of disaster-site surveys and field observations, the lab conducts model experiments, numerical experiments, and terrain data analysis. It seeks to clarify the mechanisms of sediment movement caused by the interaction between hydrological processes and topographic change.
The lab also conducts research on forecasting and predicting disasters in advance and reducing the damage they cause.
Key terms
- Fiber-optic sensing
- Technology that uses optical fiber cables as sensors to measure temperature and deformation.
- Factor of safety
- The ratio of the force trying to move a slope to the force resisting it. A value below 1 is judged to mean the slope will fail.
- Shallow landslide
- A phenomenon in which the soil layer near the slope surface collapses due to heavy rain or other causes.
ResearchResearch themes
The lab clarifies the mechanisms by which slope failures, landslides, and debris flows occur, and conducts research on forecasting, prediction, and damage reduction.
*Illustrative imageMeasuring Slope Deformation with Optical Fibers
Using fiber-optic sensing, the lab measured strain inside a landslide borehole at 10 cm depth intervals and captured the slip surface and deformation during rainfall. It also aims to apply the method to other slope disasters such as debris flows.
*Illustrative imageAssessing Slope Stability
To determine the ratio of driving force to resisting force acting on a slope (the factor of safety), the lab measures the physical and mechanical properties of rock and soil through tests. It clarifies the mechanisms of various failure phenomena and applies the results to disaster prevention.
*Illustrative imageMechanisms and Prediction of Shallow Landslides
Through indoor rainfall-induced failure experiments and field observations, the lab investigates the conditions under which shallow landslides occur on forested slopes. It aims to establish technology for predicting failures from the relationship between failures and changes in soil moisture content and pore water pressure.
*Illustrative imageSlope Failure and Flow Seen Through Numerical Analysis
The lab has developed a numerical analysis method combining Discontinuous Deformation Analysis (DDA) and Smoothed Particle Hydrodynamics (SPH). It uses the method to study the stability of artificial slopes such as cut and embankment slopes, and the flow of debris flows.
MembersFaculty
- ProfessorTetsuya Kogure
- Assistant ProfessorLI Changze
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Landslide mitigation at side of Shrine in Kinryu, Saga” Pekachu / CC BY-SA 4.0 (cropped)
- Measuring Slope Deformation with Optical Fibers: “MoST Fiber Optic Cable Display” Winver351 / CC BY-SA 4.0 (cropped)
- Assessing Slope Stability: “Collapsed slope of R371” 0nedream / CC BY-SA 3.0 (cropped)
- Mechanisms and Prediction of Shallow Landslides: “Landslide Nigulsari, Kinnaur” Dfromhimalayas / CC BY 4.0 (cropped)
- Slope Failure and Flow Seen Through Numerical Analysis: “StandardSPH” Salvatore Marrone / CC BY-SA 4.0 (cropped)
- Related lab (強
震動研究分野): “2004 Chuetsu earthquake Damaged building, Nagaoka 02” Naoki Sato / CC BY-SA 2.0 (cropped) - Related lab (災害気候研究分野): “Northwest Pacific cyclone Z” AHI image captured by the Japan Meteorological Agency’s Himawari-8 satellite / Public domain (cropped)
- Related lab (暴風雨・
極端気象研究領域): “Sunrise on Typhoon Hinnamnor’s Eye (CIRA )” Himawari imagery: CSU/CIRA & JMA/JAXA / Public domain (cropped) - Related lab (地震発生機構研究分野): “Optical fiber cable-07ASD” Asurnipal / CC BY-SA 4.0 (cropped)
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