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Geotechnical Engineering Lab
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A geotechnical engineering lab that studies the complex behavior of soil and rock.
AboutAbout the lab
Exploring the behavior of soil and rock through laboratory tests and numerical analysis
The Geotechnical Engineering Lab studies the properties of soil and rock, with research related to waste disposal, countermeasures for soil and groundwater contamination, and ground improvement.
To make effective use of by-products from steelmaking, power generation, and construction work as geomaterials, the lab studies their engineering properties and methods for evaluating the effects of hazardous substances on groundwater.
The lab also evaluates functions of clay, such as acting as a barrier to water flow and adsorbing hazardous substances, through laboratory tests and numerical analysis.
It also develops simulators to predict the changes that occur when high-level radioactive waste or carbon dioxide is stored in rock deep underground.
Key terms
- Coupled behavior
- Changes in which multiple phenomena, such as temperature, water flow, force, and chemical reactions, occur while interacting with one another
- High-level radioactive waste
- Radioactive waste that is a by-product of energy generation. Long-term storage in rock deep underground is envisioned.
- Ground improvement method
- A method used in construction to improve workability, increase ground strength, and reduce environmental impact
ResearchResearch themes
The lab studies how to handle the ground in situations such as waste disposal, countermeasures against soil and groundwater contamination, and construction work. Using laboratory tests and numerical analysis, it investigates the behavior of geomaterials and rock across mechanical, hydraulic, and chemical processes.
*Illustrative imageCoupled Behavior of Geomaterials and Test Methods for Evaluation
The pore structure and interface reactions of clay depend on the chemical conditions of the pore water. Through laboratory tests and numerical analysis, the lab studies the behavior and transport of trace elements in the ground, aiming to contribute to waste disposal and countermeasures for soil and groundwater contamination.
*Illustrative imageGeotechnical Engineering for Landfills and Waste Disposal
The lab considers how landfill sites can be put to use quickly as land resources. It also works on the long-term strength and deformation characteristics of landfill ground, its effects on disposal site structures, and the long-term hydraulic properties of engineered barrier layers.
*Illustrative imageSimulators for Predicting the Coupled Behavior of Rock
Storing high-level radioactive waste or carbon dioxide in rock deep underground over the long term requires predicting and evaluating changes in which temperature, water flow, stress and damage, and chemical reactions interact. The lab develops mathematical models and simulators for these coupled phenomena and applies them to real-world problems.
*Illustrative imageApplicability and Long-Term Stability of Ground Improvement Methods
In construction, various ground improvement methods are used to improve workability, increase ground strength, and reduce environmental impact. The lab develops new methods and examines ways to evaluate their long-term stability.
MembersFaculty
The Geotechnical Engineering Lab's members are faculty, project researchers, doctoral, master's, and undergraduate students, and administrative assistants.As of 2026
- ProfessorToru Inui
- Associate ProfessorSho Ogata
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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: “Ground works by the A63, Hull - geograph.org.uk - 6683590” Paul Harrop / CC BY-SA 2.0 (cropped)
- Coupled Behavior of Geomaterials and Test Methods for Evaluation: “Soil Texture Samples including loam, sand and clay” Gnomedude / CC BY 2.0 (cropped)
- Geotechnical Engineering for Landfills and Waste Disposal: “Netting at the waste disposal landfill site - geograph.org.uk - 3668037” Mat Fascione / CC BY-SA 2.0 (cropped)
- Simulators for Predicting the Coupled Behavior of Rock: “Rock Core Lab Shelves” U.S. Geological Survey / CC0 (cropped)
- Applicability and Long-Term Stability of Ground Improvement Methods: “20230107 Construction Site Nuremberg” Flocci Nivis / CC BY 4.0 (cropped)
- Related lab (Water Engineering Lab): “The Szczecin Lagoon at the mouth of the Oder River (P- )” Copernicus Sentinel-2 imagery, EK - GD DEFIS, EC - DG DEFIS, SPACETEC PARTNERS, CE - DG DEFIS / CC BY 4.0 (cropped)
- Related lab (Architectural Seismology and Geotechnics Lab): “Earthquake-resistant building (Tendjoresmi-PABA-PTPNVIII) - panoramio” de uguh / CC BY-SA 3.0 (cropped)
- Related lab (Steel Structures Lab): “UnicRotarex® steel house” Marius Rotar / CC BY-SA 4.0 (cropped)
- Related lab (Architectural and Urban Environmental Engineering Lab): “Air conditioning office building roof - public building air conditioning in Tokyo” Marek Ślusarczyk (Tupungato) Photo portfolio / CC BY 3.0 (cropped)
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