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Study on characterization of soft soil deposit in delta

Research Project

Project/Area Number 16404011
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Geotechnical engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

JIRO Takemura  Tokyo Institute of Technology, Faculty of Eng, Acco. Prof (40179669)

Co-Investigator(Kenkyū-buntansha) OHTA Heideki  Tokyo Inst. of Tech., Faculty of Eng, Professor (80026187)
KUSAKABE Osamu  Tokyo Inst. of Tech., Faculty of Eng, Professor (40092548)
IZAWA Jun  Tokyo Inst. of Tech., Faculty of Eng, Research Associate (70345388)
WATABE Yoichi  Port and Airport Research Institute, Soil Mechanics Lab, Head (00371758)
TANAKA Masanori  Port and Airport Research Institute, Soil Mechanics Lab, Chief Researcher (20371768)
桑野 二郎  東京工業大学, 大学院・理工学研究科, 助教授 (30178149)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥13,400,000 (Direct Cost: ¥13,400,000)
Fiscal Year 2006: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2005: ¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 2004: ¥6,300,000 (Direct Cost: ¥6,300,000)
KeywordsDelta / Alluvial deposit / Sampling / Disturbance / Field tests / Laboratory tests / Compressibility / Strength / 軟弱地盤 / 粘土
Research Abstract

In this study collaboration researches about the soil characterization on the alluvial deposits at the Tan An and Can Tho sites in Mekong River Delta, South Vietnam. The following conclusions were drawn from the study.
(1) The Tan An clay, which has been deposited at the riverside of meandering Bam Co Tay River, is highly plastic and very soft with relatively uniform physical properties to a depth of about 8m.
(2) The Can Tho soft clay has been deposited at the flooding area beside the levee of Hau River, one of the major streams of Mekong River. It has significant heterogeneity in the depositional direction, having relatively low plasticity with thin sand seams, which might be created due to large floods.
(3) Depositional speed of the Can To clay is much faster than that of the Tan An clay. C14 dating of the Tan An clay at depth of 6.5m and the Can Tho clay at depth of 19.5m are almost the same, 6,300BP.
(4) Although mechanical and physical properties of the two clays are quite different, … More both clays have developed high degree of microstructures, which has been confirmed from CRS tests. The ratios of maximum compression index just after the consolidation yield stress to that at the very large consolidation pressure are more than 6 for both clays if excellent quality of sample can be retrieved.
(5) For the non uniform and very thick soft deposit like the Can Tho clay, continuous soil sounding using piezocone is essential for characterizing the site.
(6) Sampling method has significant effect on the sample quality especially for low plastic clay, like Can Tho. JFP is much more superior to Shelby. However, for high plastic clay, the sample collected by Shelby tube sampler might give similar quality to those collected by FFP.
(7) Beside the above mentioned sampling method, there are some problems in the process of soil investigation in Vietnam, such as poor handling of the samples from the site to laboratory and specimen preparation in the laboratory.
(8) Wide varieties of soft soils with different physical and chemical properties prevail in the huge area of Mekong River Delta. Continuous soil investigation studies and practices with good quality sampling, such as thin-walled tube sampler with fixed piston, and laboratory testing as well as appropriate field testing are highly recommended, which can greatly contribute to the proper development in Mekong River Delta. Less

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (34 results)

All 2007 2006 2005 2004

All Journal Article (34 results)

  • [Journal Article] 性能設計概念に基づいた実用的土質定数決定法2007

    • Author(s)
      渡部要一、植田智幸、三枝弘幸、田中政典、菊池喜昭
    • Journal Title

      土木学科論文集C 63巻、2号

      Pages: 553-565

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 圧密試験を用いたメコンデルタ粘土のサンプル品質についての検討2007

    • Author(s)
      大城一徳、竹村次朗、湯浅芳樹、渡部要一、田中政典
    • Journal Title

      第42回地盤工学研究発表会論文集 1号

      Pages: 239-240

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Practical determination method of soil parameter fro performance based design.2007

    • Author(s)
      Y., Watabe, T., Ueda, H., Saegusa, M., Tanaka, Y., Kikuchi
    • Journal Title

      Proceeding of Japan Society of Civil Engineers C, Vol.63,No 2

      Pages: 553-565

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Sample quality of Mekong Delta clays evaluated from the results of laboratory consolidation test2007

    • Author(s)
      Y., Yuasa, J., Takemura, K., Ohshiro, M., Tanake, Y., Watabe
    • Journal Title

      Proc. 42th Japan National Conference of Geotechnical Engineering Vol. 1

      Pages: 239-240

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] メコンデルタ粘土の堆積構造の特徴について〜ペトナム・カントーの事例〜2006

    • Author(s)
      渡部要一 田中政典、竹村次朗、深沢健、三枝弘幸、植田知之
    • Journal Title

      第41回地盤工学研究発表会論文集 1号

      Pages: 245-246

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 湯浅芳樹、竹村次朗、大城一徳、渡部要一、田中政典、深沢健、三枝弘幸:メコンデルタ堆積粘土(カントー粘土)の強度評価,2006

    • Author(s)
      湯浅芳樹、竹村次朗、大城一徳、渡部要一 田中政典、深沢健、三枝弘幸
    • Journal Title

      第41回地盤工学研究発表会論文集 1号

      Pages: 247-248

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Soil parameters used in the new design code of port facilities in Japan2006

    • Author(s)
      Watabe, Y., Tanaka, M. and Kikuchi, Y.
    • Journal Title

      Proceedings of the International Symposium on New Generation Design Codes for Geotechnical Enng Practice, TAIPEI2006

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Characterization of alluvial deposits in Mekong Delta2006

    • Author(s)
      Jiro Takemura, Yoichi Watabe, Masanori Tanaka
    • Journal Title

      2nd International Workshop on Natural Soils 2006 3号

      Pages: 1805-1829

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Characteristics of sedimentary structure of Mekong Delta clay in Can Tho City2006

    • Author(s)
      Y., Watabe, M., Tanaka, J., Takemura, T., Fukasawa, H., Saegusa, T., Ueda
    • Journal Title

      Proc. 41th Japan National Conference of Geotechnical Engineering Vol. 1

      Pages: 245-246

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Strength evaluation of Mekong Delta clay sampled at Can Tho city2006

    • Author(s)
      Y., Yuasa, T., Takemura, K., Ohshiro, M. Tanake, Y., Watabe, T., Fukasawa, H., Saegusa
    • Journal Title

      Proc. 41th Japan National Conference of Geotechnical Engineering Vol. 1

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Soil parameters used in the new design code of port facilities in Japan.2006

    • Author(s)
      Y., Watabe, M., Tanaka, Y., Kikuchi
    • Journal Title

      Proceedings of the International Symposium on New Generation Design Codes for Ggineerieotechnical Enng Practice, TAIPEI 2006

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Characterization of alluvial deposits in Mekong Delta2006

    • Author(s)
      Jiro, Takemura, Yoichi, Watabe, Masanori, Tanaka
    • Journal Title

      2nd International Workshop on Natural Soils 2006 Vol. 3

      Pages: 1805-1829

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] メコンデルタ粘土の堆積構造の特徴について〜ベトナム・カントーの事例〜2006

    • Author(s)
      渡部要一, 田中政典, 竹村次朗, 深沢健, 三枝弘幸, 植田知之
    • Journal Title

      第41回地盤工学研究発表会論文集 1

      Pages: 245-246

    • Related Report
      2006 Annual Research Report
  • [Journal Article] メコンデルタ堆積粘土(カントー粘土)の強度評価2006

    • Author(s)
      湯浅芳樹, 竹村次朗, 大城一徳, 渡部要一, 田中政典, 深沢健, 三枝弘幸
    • Journal Title

      第41回地盤工学研究発表会論文集 1

      Pages: 247-248

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Characterization of alluvial deposits in Mekong Delta2006

    • Author(s)
      Jiro Takemura, Yoichi Watabe, Masanori Tanaka
    • Journal Title

      2^<nd> International Workshop on Natural Soils 2006 3

      Pages: 1805-1829

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 圧密試験を用いたメコンデルタ粘土のサンプル品質についての検討2006

    • Author(s)
      大城一徳, 竹村次朗, 湯浅芳樹, 渡部要一, 田中政典
    • Journal Title

      第42回地盤工学研究発表会論文集 1(掲載決定)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] メコンデルタ東部地域に堆積した軟弱粘土の強度・圧密特性の評価法に関する考察2005

    • Author(s)
      大城一徳、竹村次朗、渡部要一、田中正典、Bui Tan Man
    • Journal Title

      第40回地盤工学研究発表会論文集 1号

      Pages: 167-168

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] メコンデルタ東部域における日越共同地盤調査,第40回地盤工学研究発表会論文集2005

    • Author(s)
      村上智英、渡部要一、田中正典、椎名貴彦、白石保律、竹村次朗
    • Journal Title

      第40回地盤工学研究発表会論文集 1号

      Pages: 251-252

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Influence of sand fraction on compressibility and hydraulic conductivity of clayey soils2005

    • Author(s)
      Watabe, Y. and Saitoh, K
    • Journal Title

      Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering, Osaka

      Pages: 615-618

    • NAID

      130004621269

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Field and laboratory tests on strength and consolidation properties of soft clay in Mekong delta eastern part2005

    • Author(s)
      K., Ohshiro, J., Takamura, Y., Watabe, M., Tanaka, Bui Tan, Man
    • Journal Title

      Proc. 40th Japan National Conference of Geotechnical Engineering Vol. 1

      Pages: 167-168

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Japan and Vietnam joint ground investigation in eastern Mekong delta.2005

    • Author(s)
      T., Murakami, Y., Watabe, M., Tanaka, T., Shinya, Y. Siraishi, J. Takamura
    • Journal Title

      Proc. 40th Japan National Conference of Geotechnical Engineering Vol. 1

      Pages: 251-252

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Influence of sand fraction on compressibility and hydraulic conductivity of clayey soils.2005

    • Author(s)
      Y., Watabe, K., Saitoh
    • Journal Title

      Proceedings of the 16th International Conference on Soil Mechanics and Geotechnical Engineering (Osaka)

      Pages: 615-618

    • NAID

      130004621269

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] メコンデルタ東部域における日越共同地盤調査2005

    • Author(s)
      村上智英, 渡部要一, 田中正典, 椎名貴彦, 白石保律, 竹村次朗
    • Journal Title

      第40回地盤工学研究発表会論文集 1

      Pages: 251-252

    • Related Report
      2005 Annual Research Report
  • [Journal Article] メコンデルタ東部地域に堆積した軟弱粘土の強度・圧密特性の評価法に関する考察2005

    • Author(s)
      大城一徳, 竹村次朗, 渡部要一, 田中正典, Bui Tan Man
    • Journal Title

      第40回地盤工学研究発表会論文集 1

      Pages: 167-168

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 軽く過圧密された不撹乱粘土の圧密特性に及ぼす乱れの影響2004

    • Author(s)
      村上朋子、竹村次朗、野坂知正、渡部要一
    • Journal Title

      第39回地盤工学研究発表会講演集 1号

      Pages: 153-154

    • NAID

      130004622005

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 2種のサンプリン法で採取したベトナム国ハイフォン粘土の圧密試験結果2004

    • Author(s)
      竹村次朗、Bui tan Man、渡部要一、田中政典
    • Journal Title

      第39回地盤工学研究発表会講演集 1号

      Pages: 155-156

    • NAID

      130004622016

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Microstructure of clay observed by SEM in consideration of specimen preparation method,2004

    • Author(s)
      Watabe, Y., Hikiyashiki, H., Kang, M. -S., Tanaka, M. & Takemura, T.
    • Journal Title

      Proceedings of the 15th Southeast Asian Geotechnical Conference, Bangkok,

      Pages: 21-26

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evaluation of in-situ K0 for Ariake, Bangkok and Hai-Phong clays2004

    • Author(s)
      Watabe, Y., Tanaka, M. and Takamura, J.
    • Journal Title

      Proceedings of the 2nd International Conference on Site Characterization, Porto

      Pages: 1765-1772

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effects of disturbance on consolidation properties of lightly overconsolidated undisturbed samples2004

    • Author(s)
      Tomoko, Murakami, Jiro, Takemura, Tomomasa, Nosaka, Yoichi, Watabe
    • Journal Title

      Proc. 39th Japan National Conference of Geotechnical Engineering Vol. 1

      Pages: 153-154

    • NAID

      130004622005

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Consolidation tests on undisturbed Hai Phong clay samples by fixed piston and Shelby tube samplers2004

    • Author(s)
      Jiro, Takemura, Bui Tan, Man, Yoichi, Watabe, Masanori, Tanaka
    • Journal Title

      Proc. 39th Japan National Conference of Geotechnical Engineering Vol. 1

      Pages: 155-155

    • NAID

      130004622016

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Microstructure of clay observed by SEM in consideration of specimen preparation method2004

    • Author(s)
      Y., Watabe, H., Hikiyashiki, M.-S., Kang, M., Tanaka, T., Takemura
    • Journal Title

      Proceedings of the 15th Southeast Asian Geotechnical Conference, Bangkok

      Pages: 21-26

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Evaluation of in-situ KO for Ariake, Bangkok and Hai-Phong clays2004

    • Author(s)
      Y., Watabe, M., Tanaka, J., Takamura
    • Journal Title

      Proceedings of the 2nd International Conference on Site Characterization, Porto 12

      Pages: 1765-1772

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 軽く過圧密された不攪乱粘土の圧密特性に及ぼす乱れの影響2004

    • Author(s)
      村上朋子, 竹村次朗, 野坂知正, 渡部要一
    • Journal Title

      第39回地盤工学研究発表会講演集

      Pages: 153-154

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 2種のサンプリン法で採取したベトナム国ハイフォン粘土の圧密試験結果2004

    • Author(s)
      竹村次朗, Bui tan Man, 渡部要一, 田中政典
    • Journal Title

      第39回地盤工学研究発表会講演集

      Pages: 155-156

    • NAID

      130004622016

    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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