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Hikima, Ryoichi*; Hirano, Toru*; Yamashita, Masayuki*; Ishiyama, Koji*; Tanno, Takeo*; Sanada, Hiroyuki; Sato, Toshinori
JAEA-Research 2013-040, 51 Pages, 2014/03
JAEA-Research-2013-040.pdf:6.86MB
For the research and development about high-level radioactive waste disposal, it is important to evaluate the mechanical stability of the excavation and the long-term behavior of in situ rock. However, from the limited information such as the bowling core before the excavation, it is difficult to evaluate the mechanical properties of in situ rock containing cracks. For this reason, evaluation of rock properties based on Specific Energy using mechanical data from an excavation machine is carried out. This report describes the results of the joint research carried out in FY 2010 to FY 2012.
Hikima, Ryoichi; Sato, Toshinori; Sanada, Hiroyuki; Tanno, Takeo; Hirano, Toru*; Yamashita, Masayuki*; Ishiyama, Koji*
Heisei-23 Nendo (2011 Nen) Shigen, Sozai Gakkai Shuki Taikai Koenshu, p.265 - 266, 2011/09
no abstracts in English
Hikima, Ryoichi; Tanno, Takeo; Sanada, Hiroyuki; Matsui, Hiroya; Sato, Toshinori; Hirano, Toru*; Yamashita, Masayuki*; Ishiyama, Koji*
no journal, ,
no abstracts in English
Hikima, Ryoichi; Sato, Toshinori; Sanada, Hiroyuki; Tanno, Takeo; Hirano, Toru*; Yamashita, Masayuki*; Ishiyama, Koji*; Fukui, Katsunori*
no journal, ,
no abstracts in English
Hikima, Ryoichi; Tanno, Takeo; Sanada, Hiroyuki; Sato, Toshinori; Hirano, Toru*; Yamashita, Masayuki*; Ishiyama, Koji*
no journal, ,
no abstracts in English
Sato, Toshinori; Sanada, Hiroyuki; Hikima, Ryoichi*; Hirano, Toru*; Yamashita, Masayuki*; Ishiyama, Koji*
no journal, ,
Evaluation of rock properties based on Specific Energy using mechanical data from an excavation machine has been carried out in research gallery at depth of 500m in Mizunami Underground Research Laboratory. This paper describes that Specific Energy will be useful parameter to estimate Excavation Damaged Zone.
Hikima, Ryoichi*; Hirano, Toru*; Yamashita, Masayuki*; Ishiyama, Koji*; Sato, Toshinori; Sanada, Hiroyuki
no journal, ,
no abstracts in English
Sato, Toshinori; Sanada, Hiroyuki; Hikima, Ryoichi*; Hirano, Toru*; Yamashita, Masayuki*; Ishiyama, Koji*
no journal, ,
Evaluation of rock properties based on Specific Energy using mechanical data from an excavation machine has been carried out in research gallery at depth of 500m in Mizunami Underground Research Laboratory. This paper describes that Specific Energy will be useful parameter to estimate Excavation Damaged Zone comparing to the results of seismic survey and core logging data.
Hikima, Ryoichi*; Yoshino, Osamu*; Hirano, Toru*; Ishiyama, Koji*; Morita, Yutaka; Sugita, Yutaka; Sano, Osamu*
no journal, ,
This report is one of the case studies that were carried out in order to contribute to the research and evaluation methods development of the impact of massive earthquakes in deep underground geological environment. We report the results of analysis of the changes in elastic wave velocity before and after relatively large-scale earthquake, by using elastic wave measurement data the period from 2005 to 2014. That measurement are continued for more than 20 years, in Iwate Prefecture Kamaishi mine tunnel which close to the epicenter of the off the Pacific coast Tohoku Earthquake.
Matsui, Hiroya; Ishiyama, Koji*; Yoshino, Osamu*; Hikima, Ryoichi*; Sanoki, Satoru*; Hayashi, Kunihiko*; Takahashi, Masahiro*; Sato, Masaru*
no journal, ,
This paper is described about the results of collaboration study between Nishimatsu cop. and JAEA to estimate the applicability of high resolution elastic wave velocity measurement for understanding of a groundwater flow. The measurement was carried out in the vicinity of the groundwater recovery test drift in MIU and it continued for about three month from just after starting at the drainage of the test drift. The results suggested that the elastic wave velocity change were measured with groundwater flow due to drainage of the test drift and the high resolution elastic wave velocity measurement can be applicable for understanding of groundwater flow.
Matsui, Hiroya
no journal, ,
This paper is described about the results of collaboration study between Nishimatsu cop. and JAEA to estimate the applicability of high resolution elastic wave velocity measurement for understanding of a groundwater flow. The measurement was carried out in the vicinity of the groundwater recovery test drift in MIU and it continued for about three month from just after starting at the drainage of the test drift. The results suggested that the elastic wave velocity change were measured with groundwater flow due to drainage of the test drift and the high resolution elastic wave velocity measurement can be applicable for understanding of groundwater flow.
Ishiyama, Koji*; Yoshino, Osamu*; Hikima, Ryoichi*; Matsui, Hiroya; Ozaki, Yusuke; Takeuchi, Ryuji; Sakakibara, Junichi*; Sanoki, Satoru*; Hayashi, Kunihiko*
no journal, ,
In this study, we evaluate the high accurate elastic wave measurement system at the 500m stage in Mizunami underground research laboratory. We used the sine and pseudo random wave between 0.5 kHz and 20 kHz as source signals and received them by 6 receivers. We observed that the elastic wave became low speed and high attenuation around the zone where the rock classification was lower than surroundings. From this result, we could capture the damaged zone by elastic wave. For the capability of deeper exploration, we need to improve the transmission system.