REVIEW OF JAPANESE SUBSURFACE INVESTIGATION TECHNIQUES

The paper reviews the current practice of subsurface investigation in Japan, with emphasis on particular techniques used during the preliminary and detailed phases of investigation. The method of standard penetration testing and its reliability with respect to testing depth and hammer type must be considered in the interpretation of blow-count values. Borehole geophysical methods, primarily seismic, provide a way to identify low velocity zones beneath a higher velocity zone during the preliminary phase of investigation. Innovations in undisturbed sampling techniques of cohesionless soils, borehole shear testing devices, and in situ measurement of earth pressure at rest are examples of continuing refinement in detailed geotechnical investigation methods used in Japan. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00465828
• Supplemental Notes:
  • This paper was presented at the Seminar on Geotechnical Engineering in Practice, Bangkok, July 20-21, 1979.
• Corporate Authors:

  Southeast Asian Society of Soil Engineering

  P.O. Box 2754
  Bangkok,   Thailand 
• Authors:
  • Mori, H
• Publication Date: 1979-12

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 219-242
• Serial:
  • GEOTECHNICAL ENGINEERING
  • Volume: 10
  • Issue Number: 2
  • Publisher: SOUTHEAST ASIAN GEOTECHNICAL SOCIETY
  • ISSN: 0046-5828

Subject/Index Terms

• TRT Terms: Boreholes; Conferences; Depth; Dynamic penetration test; Earth pressure; Field tests; Geological surveying; Geophysics; Granular soils; Hammers; Measurement; Reliability; Seismicity; Shear strength; Shear tests; Soil penetration test; Tests; Underground structures; Undisturbed samples; Velocity
• Uncontrolled Terms: Earth pressure at rest; Seismic investigations; Site investigation; Subterranean
• Geographic Terms: Japan; Thailand
• Old TRIS Terms: K sub zero (Coefficient of earth pressure at rest); Preliminary investigations; Subsurface explorations
• ITRD Terms: 5711: Bore hole; 8525: Conference; 6499: Depth; 6296: Dynamic penetration test; 5735: Earth pressure at rest; 5742: Geophysics; 6226: In situ; 8053: Japan; 6136: Measurement; 4109: Non cohesive soil; 5731: Seismic; 5531: Shear; 5722: Site investigation; 4372: Subterranean; 6255: Test; 8113: Thailand; 6260: Undisturbed sample
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; Public Transportation; I41: General Soil Surveys;

Filing Info

• Accession Number: 00345231
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Jan 29 1982 12:00AM