Proposed geophysical method for investigating the for a landfill project in Okayama, Japan

Makoto Nishigaki, Mitsuru Komatsu, Makoto Inoue, Kwabena Kankam-Yeboad, Stephan Mattersteig, John Apambilla Akudago

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In Japan, wastes are dumped in mountainous areas due to the unavailability of land. The sea, thus, offers a good potential as landfill sites. The seabed along part of the coast of Okayama was first investigated by means of drilled boreholes. Information from the borehole togs showed variable clay depths of 1-3 m. In order to determine the continuity of the clay layer, an Induced Polarisation (IP) resistivity survey was carried out in the sea. The geophysical measurements showed that there is a continuous clay layer in the seabed; with a thickness of not less than 1 m. Further tests showed that the clay layer has a permeability of 1.0E-06 cm/s which meets the requirement of continuous clay liners of at least 5 m thick and permeability, k<1.0E-05 cm/s for landfill sites in Japan. Therefore, the clay layer in the sea bed along the coast of Okayama could serve as an effective liner and (lie site is suitable for a landfill, without any threat to the sea. The applicability of the method in underwater geotechnical investigations is discussed in this paper.

Original languageEnglish
Title of host publication5th ICEG Environmental Geotechnics
Subtitle of host publicationOpportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress
Pages1495-1502
Number of pages8
Publication statusPublished - Dec 1 2006
Event5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - International Society of Soil Mechanics and Geotechnical Engineering's (ISSMGE) 5th International Congress - Cardiff, Wales, United Kingdom
Duration: Jun 26 2006Jun 30 2006

Publication series

Name5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress
VolumeII

Other

Other5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - International Society of Soil Mechanics and Geotechnical Engineering's (ISSMGE) 5th International Congress
CountryUnited Kingdom
CityCardiff, Wales
Period6/26/066/30/06

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering
  • Environmental Engineering
  • Waste Management and Disposal

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  • Cite this

    Nishigaki, M., Komatsu, M., Inoue, M., Kankam-Yeboad, K., Mattersteig, S., & Akudago, J. A. (2006). Proposed geophysical method for investigating the for a landfill project in Okayama, Japan. In 5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress (pp. 1495-1502). (5th ICEG Environmental Geotechnics: Opportunities, Challenges and Responsibilities for Environmental Geotechnics - Proceedings of the ISSMGE 5th Int. Congress; Vol. II).