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Sato, Shin*; Ono, Hirokazu; Tanai, Kenji; Yamamoto, Shuichi*; Fukaya, Masaaki*; Shimura, Tomoyuki*; Niunoya, Sumio*
Jiban Kogaku Janaru (Internet), 15(3), p.529 - 541, 2020/09
no abstracts in English
Tanai, Kenji; Fujita, Tomoo; Noda, Masaru*; Yamamoto, Shuichi*; Shimura, Tomoyuki*; Sato, Shin*
Dai-13-Kai Iwa No Rikigaku Kokunai Shimpojiumu Koen Rombunshu (CD-ROM), p.167 - 172, 2013/01
Japan Atomic Energy Agency has been planning in-situ gas migration test in Horonobe URL, Hokkaido. This paper discusses the optimum gas injection procedure for the test to understand gas migration behaviour in surrounded rock. The stepwise constant gas injection was selected, taking into account domestic and overseas gas related research results. Hydro-mechanical-gas coupling analysis which is able to consider the dissolved methane in Horonobe groundwater was applied to evaluate the gas behaviour. The results have indicated no significant mechanical damages to the rock and have supported the sppropriateness of selected gas injection procedure for the test.
Tanai, Kenji; Fujita, Tomoo; Sato, Shin*; Noda, Masaru*; Yamamoto, Shuichi*; Shimura, Tomoyuki*
Dai-13-Kai Iwa No Rikigaku Kokunai Shimpojiumu Koen Rombunshu (CD-ROM), p.173 - 178, 2013/01
Japan Atomic Energy Agency has been planning 
gas migration test in Horonobe URL, Hokkaido. It is expected that dissolved methane in Horonobe groundwater might have an effect on gas migration behaviour in bedrock. A series of two-phase multi-component analyses by use of GETFLOWS were conducted to understand the influence of dissolved methane. The increase of total gas pressure has been shown due to the existence of dissolved methane. The results also indicated that the injected nitrogen gas volume was influenced by dissolved methane.
Noda, Masaru*; Yamamoto, Shuichi*; Shimura, Tomoyuki*; Sato, Shin*; Tanai, Kenji; Fujita, Tomoo
no journal, ,
no abstracts in English
Sato, Shin*; Yamamoto, Shuichi*; Noda, Masaru*; Shimura, Tomoyuki*; Fujita, Tomoo; Tanai, Kenji
no journal, ,
no abstracts in English
Tanai, Kenji; Fujita, Tomoo; Noda, Masaru*; Yamamoto, Shuichi*; Shimura, Tomoyuki*; Sato, Shin*
no journal, ,
no abstracts in English
Fujita, Tomoo; Tanai, Kenji; Shimura, Tomoyuki*; Noda, Masaru*; Yamamoto, Shuichi*; Sato, Shin*
no journal, ,
no abstracts in English
Sato, Shin*; Yamamoto, Shuichi*; Ono, Hirokazu; Tanai, Kenji; Fukaya, Masaaki*; Shimura, Tomoyuki*; Niunoya, Sumio*
no journal, ,
no abstracts in English
Sato, Shin*; Ono, Hirokazu; Tanai, Kenji; Yamamoto, Shuichi*; Fukaya, Masaaki*; Shimura, Tomoyuki*; Niunoya, Sumio*
no journal, ,
Kimura, Shun; Nakayama, Masashi; Kinota, Kimihiro; Tanai, Kenji; Niunoya, Sumio*; Shimura, Tomoyuki*; Fukaya, Masaaki*
no journal, ,
Swelling deformation of buffer material has been measured using buffer material swelling sensor on the full-scale in-situ engineered barrier system experiment. The sensor consists of strain gauges and is installed between the buffer material and backfill. This study reports the calculation result of the swelling deformation from measured strain values.
Kimura, Shun; Kinota, Kimihiro; Sugita, Yutaka; Moriiwa, Motoki*; Niunoya, Sumio*; Takahashi, Shinichi*; Shimura, Tomoyuki*
no journal, ,
In vertically emplaced Engineered Barrier System (EBS), the upwards swelling of the buffer material in the disposal pit can decrease its dry density. Consequently, a disposal tunnel above the disposal pits is backfilled to restrict the upwards swelling of the buffer material. In order to evaluate the performance of backfill material, it is essential to understand the swelling behavior of the buffer material due to the mechanical interactions between the buffer and backfill materials. To this end, laboratory experiments that simulate the buffer and the backfill materials of the vertically emplaced EBS were conducted.
