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Proceedings Papers

Fundamental Study on Estimation of Permeability at In-Situ EDZ from Pore Air Pressure Response

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Masahiko Osada, Koji Osawa, Christina Putri Widyaningtyas, Yota Togashi
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-431
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View Paper titled, Fundamental Study on Estimation of Permeability at In-Situ EDZ from Pore Air Pressure Response
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Proceedings Papers

A New Simple Shear Test of Rock Prism Specimen by Torsional Shearing

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Yota Togashi, Riho Hirasawa, Masahiko Osada
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-413
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View Paper titled, A New Simple Shear Test of Rock Prism Specimen by Torsional Shearing
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Proceedings Papers

Numerical Method of Tunnel Face Pressure Estimation Considering Progressive Failure Due to Excavation

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Yota Togashi, Shota Iguchi, Masahiko Osada, Ryo Kawanoue
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-159
https://doi.org/10.1088/1755-1315/833/1/012157
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View Paper titled, Numerical Method of Tunnel Face Pressure Estimation Considering Progressive Failure Due to Excavation
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Proceedings Papers

Exact solution of Richards’ equation using heat transfer boundary and application to dry-induced deformation behavior of Tage tuff

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Kazuki Mizuo, Yota Togashi, Masahiko Osada
Paper presented at the ISRM International Workshop on Rock Mechanics and Engineering Geology in Volcanic Fields, September 9–11, 2021
Paper Number: ISRM-IWRMEGV-2021-16
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View Paper titled, Exact solution of Richards’ equation using heat transfer boundary and application to dry-induced deformation behavior of Tage tuff
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Proceedings Papers

Seasonal Change of a Fracture Aperture in Porous Tuffaceous Rock with 0.01mm-order Real-time Monitoring

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Masahiko Osada, Kohei Funabiki
Paper presented at the ISRM International Workshop on Rock Mechanics and Engineering Geology in Volcanic Fields, September 9–11, 2021
Paper Number: ISRM-IWRMEGV-2021-60
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View Paper titled, Seasonal Change of a Fracture Aperture in Porous Tuffaceous Rock with 0.01mm-order Real-time Monitoring
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Proceedings Papers

Drying-induced Deformation Characteristics of Rocks

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Masahiko Osada
Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-001
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View Paper titled, Drying-induced Deformation Characteristics of Rocks
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Proceedings Papers

Study on Dynamic Properties of Rock Discontinuity using Dynamic Direct Shear Test Machine

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Jun Yoshida, Ryunoshin Yoshinaka, Takeshi Sasaki, Masahiko Osada
Paper presented at the ISRM International Symposium - 8th Asian Rock Mechanics Symposium, October 14–16, 2014
Paper Number: ISRM-ARMS8-2014-089
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View Paper titled, Study on Dynamic Properties of Rock Discontinuity using Dynamic Direct Shear Test Machine
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Proceedings Papers

Effect of Desiccation on the Strain and Elastic Wave Velocities of Tage Tuff

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Thilini N. Illankoon, Masahiko Osada, Nayana M. Adikaram
Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-014
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View Paper titled, Effect of Desiccation on the Strain and Elastic Wave Velocities of Tage Tuff
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Proceedings Papers

Experimental Study on Fluid Flow Containing Microbubbles Through Porous Sandstone and Sand Grains

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Rangga A. Sudisman, Masahiko Osada, Takato Takato Takemura, Manabu Takahashi
Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-106
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View Paper titled, Experimental Study on Fluid Flow Containing Microbubbles Through Porous Sandstone and Sand Grains
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Proceedings Papers

Age Variations of Layered Fillings within a Single Fracture in Sedimentary Rock at Coastal Outcrops of Yakushima Island, Japan

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Tomoaki Matsushita, Masahiko Osada, Manabu Takahashi
Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, October 15–19, 2012
Paper Number: ISRM-ARMS7-2012-111
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View Paper titled, Age Variations of Layered Fillings within a Single Fracture in Sedimentary Rock at Coastal Outcrops of Yakushima Island, Japan
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Proceedings Papers

Characteristics And Ages of Rock Fractures Filled With Carbonates In the Vicinity of Uplifted Corals

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Tomoaki Matsushita, Masahiko Osada, Manabu Takahashi
Paper presented at the 45th U.S. Rock Mechanics / Geomechanics Symposium, June 26–29, 2011
Paper Number: ARMA-11-338
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View Paper titled, Characteristics And Ages of Rock Fractures Filled With Carbonates In the Vicinity of Uplifted Corals
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