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International Resource and Environment Systems Lab
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The lab studies resources and the environment, investigating mines and underground rock mass through numerical analysis and field measurements.
AboutAbout the lab
Taking on a wide range of resource and environmental problems
The International Resource and Environment Systems Lab studies a variety of problems related to resources and the environment.
Targeting coal mines in Kushiro and mines in Zambia, it investigates the stability of mine tunnels and the design of pillars that support the roof, using numerical analysis and field measurements.
The lab also works on coal seam CCS, which confines carbon dioxide in coal seams, and on methods of preventing large earthquakes through water injection.
Key terms
- Pillar
- A part left unmined as a column to support the roof when mining ore or coal underground
- Coal seam CCS
- A technology that injects carbon dioxide into underground coal seams and keeps it confined there
- Permeability
- A value expressing how easily gas or water can pass through rock or coal
NewsLab news
View More ↗ResearchResearch themes
Among the various problems related to resources and the environment, the lab takes on a wide range of those it can address. It studies the stability of rock mass in mines, underground storage of carbon dioxide, and earthquake prevention.
*Illustrative imageStability of Coal Mine Tunnels
In room mining at the Kushiro Coal Mine, the lab uses numerical analysis and field measurements to investigate how excavation affects the pillars, main tunnels, and ground surface, and how the stiffness of the backfill placed in the mined-out areas affects them.
*Illustrative imagePillar Design in Mines
Targeting platinum mines in Zambia, the lab proposes a method for rationally designing the pillars that support the roof, based on numerical analysis.
*Illustrative imageChallenges of Coal Seam CCS
In coal seam CCS, coal adsorbs carbon dioxide and swells, which lowers permeability and quickly reduces the injection rate. The lab develops a numerical simulation method that reproduces this phenomenon and looks for solutions.
*Illustrative imageEarthquake Prevention
A method has been proposed that prevents large earthquakes by causing many small ones through periodic water injection. The lab examines how this could be applied to cases such as the 2023 Turkey–Syria earthquake and the 2024 Noto Peninsula earthquake.
MembersFaculty
- Project ProfessorYoshiaki Fujii
VoicesStudent voices
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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: “Kushiro Coal Mine 2011” Ozizo / CC0 (cropped)
- Stability of Coal Mine Tunnels: “Roof & Pillar ( )” Dennis G. Jarvis / CC BY-SA 2.0 (cropped)
- Pillar Design in Mines: “Widow Jane Mine by Forsaken Fotos” Forsaken Fotos / CC BY 2.0 (cropped)
- Challenges of Coal Seam CCS: “Coal seam” Arnoldius / CC BY-SA 3.0 (cropped)
- Earthquake Prevention: “Chelongpu Fault rupture as it crosses Dakeng” MiNe / CC BY 2.0 (cropped)
- Related lab (Resource Management Lab): “Open Pit Mine, Near Iron Mountain Area, Utah (73262911)” Ken Lund from Reno, Nevada, USA / CC BY-SA 2.0 (cropped)
- Related lab (Rock Mechanics Lab): “Beachrock aerial view” Alessio Rovere / CC BY-SA 4.0 (cropped)
- Related lab (Resource Chemistry Lab): “Rio tinto river CarolStoker NASA Ames Research Center” Carol Stoker, NASA / Public domain (cropped)
- Related lab (River and Watershed Engineering Lab): “Takikawa view from glider” Soica2001 (talk) / Public domain (cropped)
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