Effect of water vapor on re-saturation process in EBS performance of re-saturation process by Thermo-Hydro-Mechanical coupled analysis
The coupled Thermo – Hydro – Mechanical behavior of a radioactive waste disposal facility during its re-saturation is affected by water vapor generated by the heating of pore water. In this study, a Thermo – Hydro – Mechanical coupled analysis of a confirmation test being conducted at the Horonobe U...
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| Veröffentlicht in: | Japanese Geotechnical Journal 2020/09/30, Vol.15(3), pp.529-541 |
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| container_title | Japanese Geotechnical Journal |
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| creator | SATO, Shin Ohno, Hirokazu Tanai, Kenji YAMAMOTO, Shuichi FUKAYA, Masaaki SHIMURA, Tomoyuki NYUNOYA, Sumio |
| description | The coupled Thermo – Hydro – Mechanical behavior of a radioactive waste disposal facility during its re-saturation is affected by water vapor generated by the heating of pore water. In this study, a Thermo – Hydro – Mechanical coupled analysis of a confirmation test being conducted at the Horonobe Underground Research Center was performed, and how the increase in pore pressure caused by the generation of the water vapor affects the engineering barrier performance was discussed. As a result, by considering the water vapor in the analysis, the evaporation of the moisture content around the heater led to the increase in porosity by about 10% and the decrease in saturation by about 15% as the air pressure in the voids increased. Therefore, it was necessary to consider the effect of the water vapor generation due to the temperature rise near the heater in order to simulate re-saturation behavior in the long-term behavior evaluation of the buffer materials. |
| doi_str_mv | 10.3208/jgs.15.529 |
| format | Article |
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In this study, a Thermo – Hydro – Mechanical coupled analysis of a confirmation test being conducted at the Horonobe Underground Research Center was performed, and how the increase in pore pressure caused by the generation of the water vapor affects the engineering barrier performance was discussed. As a result, by considering the water vapor in the analysis, the evaporation of the moisture content around the heater led to the increase in porosity by about 10% and the decrease in saturation by about 15% as the air pressure in the voids increased. Therefore, it was necessary to consider the effect of the water vapor generation due to the temperature rise near the heater in order to simulate re-saturation behavior in the long-term behavior evaluation of the buffer materials.</description><identifier>ISSN: 1880-6341</identifier><identifier>EISSN: 1880-6341</identifier><identifier>DOI: 10.3208/jgs.15.529</identifier><language>eng ; jpn</language><publisher>Tokyo: The Japanese Geotechnical Society</publisher><subject>Bentonite ; Effective stress analysis ; Evaporation ; Mechanical properties ; Moisture content ; Pore pressure ; Pore water ; Pore water pressure ; Porosity ; Radioactive waste disposal ; Radioactive wastes ; Research facilities ; Saturation ; Temperature rise ; Thermo-Hydro-Mechanical coupled analysis ; vaporization ; Voids ; Waste disposal ; Water content ; Water vapor ; Water vapour</subject><ispartof>Japanese Geotechnical Journal, 2020/09/30, Vol.15(3), pp.529-541</ispartof><rights>2020, The Japanese Geotechnical Society</rights><rights>Copyright Japan Science and Technology Agency 2020</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c1949-79bf90cfc1bd3555b24b28367a10398975c5e29dfaae8f15cae7ef3a9dc421963</citedby><cites>FETCH-LOGICAL-c1949-79bf90cfc1bd3555b24b28367a10398975c5e29dfaae8f15cae7ef3a9dc421963</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,1884,27929,27930</link.rule.ids></links><search><creatorcontrib>SATO, Shin</creatorcontrib><creatorcontrib>Ohno, Hirokazu</creatorcontrib><creatorcontrib>Tanai, Kenji</creatorcontrib><creatorcontrib>YAMAMOTO, Shuichi</creatorcontrib><creatorcontrib>FUKAYA, Masaaki</creatorcontrib><creatorcontrib>SHIMURA, Tomoyuki</creatorcontrib><creatorcontrib>NYUNOYA, Sumio</creatorcontrib><title>Effect of water vapor on re-saturation process in EBS performance of re-saturation process by Thermo-Hydro-Mechanical coupled analysis</title><title>Japanese Geotechnical Journal</title><addtitle>Japanese Geotechnical Journal</addtitle><description>The coupled Thermo – Hydro – Mechanical behavior of a radioactive waste disposal facility during its re-saturation is affected by water vapor generated by the heating of pore water. In this study, a Thermo – Hydro – Mechanical coupled analysis of a confirmation test being conducted at the Horonobe Underground Research Center was performed, and how the increase in pore pressure caused by the generation of the water vapor affects the engineering barrier performance was discussed. As a result, by considering the water vapor in the analysis, the evaporation of the moisture content around the heater led to the increase in porosity by about 10% and the decrease in saturation by about 15% as the air pressure in the voids increased. Therefore, it was necessary to consider the effect of the water vapor generation due to the temperature rise near the heater in order to simulate re-saturation behavior in the long-term behavior evaluation of the buffer materials.</description><subject>Bentonite</subject><subject>Effective stress analysis</subject><subject>Evaporation</subject><subject>Mechanical properties</subject><subject>Moisture content</subject><subject>Pore pressure</subject><subject>Pore water</subject><subject>Pore water pressure</subject><subject>Porosity</subject><subject>Radioactive waste disposal</subject><subject>Radioactive wastes</subject><subject>Research facilities</subject><subject>Saturation</subject><subject>Temperature rise</subject><subject>Thermo-Hydro-Mechanical coupled analysis</subject><subject>vaporization</subject><subject>Voids</subject><subject>Waste disposal</subject><subject>Water content</subject><subject>Water vapor</subject><subject>Water vapour</subject><issn>1880-6341</issn><issn>1880-6341</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNptkL9OwzAQhyMEEqWw8ASW2JBS7DhO4oEBqkKRihgos3Vxzm2iNA52CsoL8NykKlQMTPdH351--oLgktEJj2h2U638hImJiORRMGJZRsOEx-z4T38anHlfUZpIGtNR8DUzBnVHrCGf0KEjH9BaR2xDHIYeuq2Drhym1lmN3pOyIbP7V9KiM9ZtoNG4O_2fzXuyXKPb2HDeF86Gz6jX0JQaaqLttq2xINBA3fvSnwcnBmqPFz91HLw9zJbTebh4eXya3i1CzWQsw1TmRlJtNMsLLoTIoziPMp6kwCiXmUyFFhjJwgBgZpjQgCkaDrLQccRkwsfB1f7vkPF9i75Tld26IYRXURynMmFpLAfqek9pZ713aFTryg24XjGqdp7V4FkxoQbPA3y7hyvfwQoPKLiu1DX-ovyHP-wHF05hw78BOYiJSg</recordid><startdate>20200930</startdate><enddate>20200930</enddate><creator>SATO, Shin</creator><creator>Ohno, Hirokazu</creator><creator>Tanai, Kenji</creator><creator>YAMAMOTO, Shuichi</creator><creator>FUKAYA, Masaaki</creator><creator>SHIMURA, Tomoyuki</creator><creator>NYUNOYA, Sumio</creator><general>The Japanese Geotechnical Society</general><general>Japan Science and Technology Agency</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope></search><sort><creationdate>20200930</creationdate><title>Effect of water vapor on re-saturation process in EBS performance of re-saturation process by Thermo-Hydro-Mechanical coupled analysis</title><author>SATO, Shin ; 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In this study, a Thermo – Hydro – Mechanical coupled analysis of a confirmation test being conducted at the Horonobe Underground Research Center was performed, and how the increase in pore pressure caused by the generation of the water vapor affects the engineering barrier performance was discussed. As a result, by considering the water vapor in the analysis, the evaporation of the moisture content around the heater led to the increase in porosity by about 10% and the decrease in saturation by about 15% as the air pressure in the voids increased. Therefore, it was necessary to consider the effect of the water vapor generation due to the temperature rise near the heater in order to simulate re-saturation behavior in the long-term behavior evaluation of the buffer materials.</abstract><cop>Tokyo</cop><pub>The Japanese Geotechnical Society</pub><doi>10.3208/jgs.15.529</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Bentonite Effective stress analysis Evaporation Mechanical properties Moisture content Pore pressure Pore water Pore water pressure Porosity Radioactive waste disposal Radioactive wastes Research facilities Saturation Temperature rise Thermo-Hydro-Mechanical coupled analysis vaporization Voids Waste disposal Water content Water vapor Water vapour |
| title | Effect of water vapor on re-saturation process in EBS performance of re-saturation process by Thermo-Hydro-Mechanical coupled analysis |
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