@article{oai:niigata-u.repo.nii.ac.jp:00028309,
 author = {Morii, Toshihiro and Suzuki, Tetsuya and Kawai, Takayuki and Kobayashi, Kaoru and Matsumoto, Kazunobu},
 issue = {2},
 journal = {新潟大学農学部研究報告, 新潟大学農学部研究報告},
 month = {Mar},
 note = {Capillary barrier (CB) is a soil layer system which is composed of sand layer underlain by gravel layer. Water infiltrating from soil surface is well diverted along an interface between the soil layers due to a physical difference in unsaturated hydraulic properties of soil. A shallow land waste repository, in which a top CB and a bottom CB are included to reduce infiltration due to rainfall and to divert water percolating through the protected waste material respectively, was proposed to isolate safely a hazardous waste material or a very low level radioactive waste. The diversion length of the CB which could be applied to structural design of the shallow land waste repository was determined based on the laboratory soil box test. Long-term measurements of soil moisture content in the test land waste repository showed an excellent and stable water diversion of the CB in the field., キャピラリー･バリア (CB)は、砂層とその下に礫層を敷設した単純な土層システムをいう。地表面から浸潤してきた土中水は、土の不飽和水分特性の違いにより、両土層の境界面に沿ってうまく遮断される。危険な廃棄物、あるいは低レベルの放射性廃棄物を安全に隔離するための盛土式廃棄物貯蔵施設を提案した。この施設は、降雨による浸潤水を低減するとともに、貯蔵廃棄物を浸潤してくる土中水を排水するために、上部CB 被覆層と底部CB 排水層を敷設する構造となっている。盛土式廃棄物貯蔵施設の構造設計に必要となるCB の限界長を室内土槽試験で決定し、この貯蔵施設を試験施工した。長期にわたって盛土内の土中水分量を測定し、野外条件下におけるCB の優れたかつ安定した水分遮断機能を確認した。},
 pages = {179--186},
 title = {Performance of Capillary Barrier System Included in Test Shallow Land Waste Repository},
 volume = {65},
 year = {2013}
}