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  1. 学術雑誌掲載済論文
  2. 和雑誌

道東沖オホーツク海海底地盤における重力式コーン貫入試験

https://kitami-it.repo.nii.ac.jp/records/8902
https://kitami-it.repo.nii.ac.jp/records/8902
f968128a-fa10-4c3b-907c-696dddfc39ab
名前 / ファイル ライセンス アクション
土木学会論文集B3(海洋開発),2018, 土木学会論文集B3(海洋開発),2018, 74(2), p.I_868-I_873 (1.6 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2020-01-20
タイトル
言語 ja
タイトル 道東沖オホーツク海海底地盤における重力式コーン貫入試験
タイトル
言語 en
タイトル GRAVITY TYPE CONE PENETRATION TEST ON SEABED OFF EASTERN HOKKAIDO, THE SEA OF OKHOTSK
言語
言語 jpn
キーワード
主題Scheme Other
主題 cone penetration test
キーワード
主題Scheme Other
主題 methane hydrate
キーワード
主題Scheme Other
主題 sample disturbance
キーワード
主題Scheme Other
主題 sea bottom sediment
キーワード
言語 en
主題Scheme Other
主題 cone penetration test
キーワード
言語 en
主題Scheme Other
主題 methane hydrate
キーワード
言語 en
主題Scheme Other
主題 sample disturbance
キーワード
言語 en
主題Scheme Other
主題 sea bottom sediment
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
その他のタイトル
その他のタイトル GRAVITY TYPE CONE PENETRATION TEST ON SEABED OFF EASTERN HOKKAIDO, THE SEA OF OKHOTSK
言語 en
著者 渋谷, 義顕

× 渋谷, 義顕

WEKO 90437

ja 渋谷, 義顕

Search repository
山下, 聡

× 山下, 聡

WEKO 148
KAKEN 00174673
KAKEN - 研究者検索 00174673

ja 山下, 聡

Search repository
八久保, 晶弘

× 八久保, 晶弘

WEKO 89765
KAKEN - 研究者検索 50312450

ja ISNI

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小西 , 正朗

× 小西 , 正朗

WEKO 290

ja 小西 , 正朗

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坂上, 寛敏

× 坂上, 寛敏

WEKO 7158
KAKEN - 研究者検索 70271757

ja 坂上, 寛敏

Search repository
南, 尚嗣

× 南, 尚嗣

WEKO 209
KAKEN - 研究者検索 40241426

ja 南, 尚嗣

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仁科, 健二

× 仁科, 健二

WEKO 90438

ja 仁科, 健二

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内田, 康人

× 内田, 康人

WEKO 90439

ja 内田, 康人

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SHIBUYA, Yoshiaki

× SHIBUYA, Yoshiaki

WEKO 90440

en SHIBUYA, Yoshiaki

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YAMASHITA, Satoshi

× YAMASHITA, Satoshi

WEKO 87344

en YAMASHITA, Satoshi

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Hachikubo, Akihiro

× Hachikubo, Akihiro

WEKO 5420

en Hachikubo, Akihiro

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KONISHI, Masaaki

× KONISHI, Masaaki

WEKO 90443

en KONISHI, Masaaki

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SAKAGAMI, Hirotoshi

× SAKAGAMI, Hirotoshi

WEKO 7167

en SAKAGAMI, Hirotoshi

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MINAMI, Naotsugu

× MINAMI, Naotsugu

WEKO 90445

en MINAMI, Naotsugu

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NISHINA, Kenji

× NISHINA, Kenji

WEKO 90446

en NISHINA, Kenji

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UCHIDA, Yasuhito

× UCHIDA, Yasuhito

WEKO 90447

en UCHIDA, Yasuhito

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抄録
内容記述タイプ Abstract
内容記述 表層型メタンハイドレート(MH)が存在している深海底地盤の強度を調べるために,コアラーで採取した試料を用いて強度を求めた場合,間隙水にメタンが溶存しており,採取コアを引き上げることによって溶存ガスが気泡化し,試料が乱され正確な強度を求めることが困難である.そこで,表層型MHの存在が確認されている北海道道東沖のオホーツク海において,重力式コーン貫入試験(CPT)を行い,海底地盤強度の直接測定を試みた.また,コア試料に対する船上試験結果と比較し,試料の乱れについても検討した.その結果,間隙水溶存ガス濃度が高い試料や砂分が多い試料なでは船上試験結果の信頼性が低くなること,簡易な重力式CPT試験により原位置強度の測定が可能であることが明らかにされた.

[ENG]
When using the core sample retrieved from deep seabed, to evaluate the strength of deep seabed ground where shallow type methane hydrates existed, the core samples are subjected to a large stress relief during sampling. As a result, gas dissolved in the pore water will come out of solution and cause disturbance to the soil structure. Consequently, it is difficult to obtain the accuracy in-situ strength.
Therefore, in this study, gravity type cone penetration test (CPT) was conducted off the coast of Eastern Hokkaido in the Sea of Okhotsk, where shallow methane hydrates existed, and tried a direct measurement of the sea ground strength. In addition, the influence of sample disturbance of core sample was evaluated in comparison with the onboard test results. As a result, it is found that the onboard test result is underestimated in the sample with high concentration of dissolved gas and with much sand content. On the other hand, the in-situ strength can be evaluated by the simple gravity type CPT.
書誌情報 土木学会論文集B3(海洋開発)
en : Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering)

巻 74, 号 2, p. I_868-I_873, 発行日 2018
DOI
識別子タイプ DOI
関連識別子 https://doi.org/10.2208/jscejoe.74.I_868
論文ID(NAID)
識別子タイプ NAID
関連識別子 130007482546
出版者
出版者 公益社団法人 土木学会
著者版フラグ
値 publisher
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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