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Fukui-Hashiba Lab (Development Machinery Lab)
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The lab studies rock mechanics and development machinery to support development in underground spaces and on the deep seafloor.
AboutAbout the lab
Studying geosphere development to support human life
The Fukui-Hashiba Lab studies the development of the geosphere, including the ground surface and underground spaces.
Many activities essential to human life, such as environmental conservation, waste disposal, and the development of resources and energy, are connected to geosphere development.
Through in-situ tests, laboratory tests, and numerical analysis, the lab investigates the mechanical properties of crustal materials such as rock mass, as well as the interaction between development machinery and the ground.
The lab also works on the development of seafloor hydrothermal deposits and the prediction of rock mass failure.
Key terms
- Geosphere
- The part of the Earth made up of rock and ground, including the ground surface and underground spaces
- Rock mass
- A body of rock extending beneath the ground that contains fractures and similar discontinuities
- Ground support
- Supporting the surrounding ground after excavating a tunnel or similar structure so that it does not collapse
ResearchResearch themes
The lab aims to build safe, secure, and highly efficient development systems for the geosphere. It investigates the mechanical properties of rock mass, development machinery, and mining systems through in-situ tests, laboratory tests, and numerical analysis.
*Illustrative imageDevelopment on the Deep Seafloor and in the Ultra-Deep Subsurface
Developing seafloor hydrothermal deposits and the geological disposal of high-level radioactive waste both involve harsh conditions that make development difficult with existing systems. To secure rare metals, the lab studies mining systems for seafloor hydrothermal deposits.
*Illustrative imageMaking Geosphere Development More Efficient
Large-scale geosphere development can be divided into three processes: excavation, ground support, and haulage. To make the whole operation efficient and economical, the lab develops element technologies while balancing these three processes, and integrates them into a single system.
*Illustrative imagePredicting Rock Mass Failure
Because nature is complex and mechanically heterogeneous, unexpected failure can occur in earthquakes, rock slopes, and underground spaces. The lab is developing a system that detects precursory phenomena of failure, predicts large-scale failure, and warns people in the surrounding area.
*Illustrative imageAdvancing Mining Systems
As mine development grows in scale and needs to become less costly, better performance is required of mining machinery and mining systems. Taking the mechanical properties of ore deposits and rock mass into account, the lab develops simulators and performance evaluation methods.
MembersFaculty
- ProfessorKatsunori FukuiPublications ↗
- Associate ProfessorKimihiro HashibaPublications ↗
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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: “FG Reiche Zeche” Norbert Kaiser / CC BY-SA 2.5 (cropped)
- Development on the Deep Seafloor and in the Ultra-Deep Subsurface: “Inactive hydrothermal vents, Galapagos Rift (Expl )” NOAA Photo Library / CC BY 2.0 (cropped)
- Making Geosphere Development More Efficient: “Detail Gurtbandförderer” Ulrichulrich / CC BY-SA 3.0 (cropped)
- Predicting Rock Mass Failure: “Rockslide at Oddicombe” Herbythyme / CC BY-SA 4.0 (cropped)
- Advancing Mining Systems: “Ramię urabiające kombajnu chodnikowego” Lkasp2 / CC BY 3.0 (cropped)
- Related lab (Suzuki Lab): “DH-60 Gipsy Moth Wing Structure” Peripitus / CC BY-SA 3.0 (cropped)
- Related lab (Energy and Environment Lab): “Mud tank and shakers during groundwater well drilling” Nicole Fenton, USGS / Public domain (cropped)
- Related lab (SCS Lab): “A starling murmuration - geograph.org.uk - 6389346” Walter Baxter / CC BY-SA 2.0 (cropped)
- Related lab (Shibanuma Lab): “Crankshaft fatigue” Peterlewis / CC BY-SA 3.0 (cropped)
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