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Journal Articles

Geological investigations using cosmic ray muons; A Trial to detect fault at the Mizunami Underground Research Laboratory

Sasao, Eiji; Suzuki, Keiichi*; Yamada, Nobuto*; Kuboshima, Koji*

Proceedings of 12th SEGJ International Symposium (USB Flash Drive), 4 Pages, 2015/11

We performed investigation of a fault with thick and clay-altered damaged zone in granitic rock using cosmic ray muons at the Mizunami Underground Research Laboratory. Geology of the Laboratory consists of sedimentary rock and underlying granite with unconformable contact at the 170 meters below ground level (G.L.). A vertical fault with a thick, clay-altered damaged zone is present in the granite. The muon telescopes were settled at the G.L.-200 and -300 meters to estimate densities of granite and fault. Densities of granite, fault and sedimentary rock are calculated as 3.38, 2.88 and 1.99 g/cm$$^{3}$$, respectively. The obtained density is obviously higher than absolute value, though the reason of such difference is not clear at the moment. If the density of granite is assumed to be 2.6 g/cm$$^{3}$$, then the densities of fault and sedimentary rock are re-calculated as 2.2 and 1.5 g/cm$$^{3}$$. This result indicates that cosmic ray muons have good potential to detect geological structure.

JAEA Reports

A conceptual design for improving the experimental CW-GPR

Suzuki, Keiichi*; Nishiyama, Eiichiro*

JNC TJ7410 2005-002, 79 Pages, 2003/03

JNC-TJ7410-2005-002.PDF:19.85MB

no abstracts in English

JAEA Reports

None

*

JNC TJ7420 2000-007, 28 Pages, 2000/03

JNC-TJ7420-2000-007.pdf:11.92MB

no abstracts in English

JAEA Reports

None

*

JNC TJ7410 99-001, 156 Pages, 1999/03

JNC-TJ7410-99-001.pdf:6.02MB

no abstracts in English

JAEA Reports

None

*; *; Nishiyama, Eiichiro*

JNC TJ7420 98-005, 99 Pages, 1998/09

JNC-TJ7420-98-005.pdf:3.02MB

no abstracts in English

JAEA Reports

None

*; *

PNC TJ7374 98-001, 101 Pages, 1998/03

PNC-TJ7374-98-001.pdf:3.66MB

None

JAEA Reports

A Logging with a Schmidt hammer impulse in the EL.250m drift in the Kamaishi Mine

Noguchi, Shizuo*; Mo, Bai Wen*

PNC TJ7374 96-001, 27 Pages, 1996/02

PNC-TJ7374-96-001.pdf:1.91MB

no abstracts in English

JAEA Reports

None

Kawamura*; Nakada, Fumio*; Morishima*; Yuki*; Amemiya, Matsuo*; Miyagawa*

JNC TJ7400 2005-069, 15 Pages, 1992/03

JNC-TJ7400-2005-069.PDF:0.52MB

no abstracts in English

JAEA Reports

None

*; *

PNC TJ7374 91-002, 154 Pages, 1991/12

PNC-TJ7374-91-002.pdf:7.89MB

no abstracts in English

JAEA Reports

None

Tsubota, Koji

PNC TJ7374 90-001, 81 Pages, 1990/01

PNC-TJ7374-90-001.pdf:10.14MB

no abstracts in English

JAEA Reports

None

Tsubota, Koji

PNC TJ7374 89-001, 61 Pages, 1989/01

PNC-TJ7374-89-001.pdf:5.0MB

None

Oral presentation

Feasibility study for the geological survey using cosmic ray muons; An Attempt in the underground gallery of the Mizunami Underground Research Laboratory

Yamada, Nobuto; Sasao, Eiji; Kuboshima, Koji*; Suzuki, Keiichi*

no journal, , 

JAEA and KGE perform the joint research on cosmic ray muons applying detection of sub-surface geological structure such as fault, using the research gallery of the Mizunami Underground Research Laboratry. We set the detectors of cosmic ray muons in the underground gallery to assess its applicability for estimating geological structure in deep underground. We estimate the geological structure by the number of cosmic ray muons observed from November 2013 to August 2014 and confirm that we can observe the substantial number of cosmic ray muons to estimate the geological structure in the research gallery of granite at G.L.-300m.

Oral presentation

Joint research between KGE and JAEA; Feasibility study for the geological survey in deep underground using cosmic ray muons

Yamada, Nobuto; Sasao, Eiji; Suzuki, Keiichi*; Kuboshima, Koji*; Kanazawa, Sunao*

no journal, , 

JAEA and KGE perform the joint research on cosmic ray muons applying detection of sub-surface geological structure such as fault, using the research gallery of the Mizunami Underground Research Laboratory. We set the detectors of cosmic ray muons in the underground gallery to evaluate its applicability for estimating geological structure in deep underground. We estimate the geological structure by the number of cosmic ray muons observed from November 2013 to August 2014 and confirm that we can observe the substantial number of cosmic ray muons to estimate the geological structure in the research gallery of granite at -300m underground.

Oral presentation

Joint research between KGE and JAEA; Feasibility study for the geological survey in deep underground using cosmic ray muons

Sasao, Eiji; Yamada, Nobuto*; Suzuki, Keiichi*; Kuboshima, Koji*

no journal, , 

We performed investigation of fault with thick and clay-altered damaged zone in granitic rock used by cosmic ray muons at the Mizunami Underground Research Laboratory. Geology of investigated site consists of sedimentary sequence and underlying granite with unconformable contact at the 170 meters below ground level (G.L.). A fault with thick and clay-altered damaged zone is vertically distributed in granite. The muon telescopes were settled at the G.L.-200 and -300 meters to estimate densities of granite and fault. Densities of granite, fault and sedimentary rock are calculated as 3.38, 2.88 and 1.99 g/cm$$^{3}$$, respectively. The obtained density is obviously higher than absolute value, though the reason of such difference is not clear at the moment. If the density of granite is assumed to be 2.6 g/cm$$^{3}$$, then the densities of fault and sedimentary rock are re-calculated as 2.2 and 1.5 g/cm$$^{3}$$. This result indicates that cosmic ray muons have good potential to detect geological structure.

Oral presentation

Fracture investigation for EDZ estimation

Oizumi, Ryo*; Kato, Takeshi*; Kiho, Kenzo*; Kuboshima, Koji*; Miyara, Nobukatsu

no journal, , 

no abstracts in English

15 (Records 1-15 displayed on this page)
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