SQUEEZING ROCKS OF AKAMATSU TUNNEL

AKAMATSU TUNNEL, 680 M IN LENGTH, WAS COMPLETED AT SANTARO PASS ON NATIONAL HIGHWAY NO. 3. THE SWELLING UNSOUND ROCKS AROUND THE TUNNEL CONSISTED OF ALTERNATIONS OF SHALE AND SLATE, AND CRUSHED FAULT ZONES OF SLATE. WHEN THESE ROCKS CONTRACTED AIR, THEY WERE WEATHERED AND THE EXCAVATED SURFACES WERE BROKEN DOWN LIKE SCALE FRACTIONS. THIS REPORT EXPLAINS THE WORKING PROCEDURES AGAINST THE SWELLING ROCKS THAT WERE ENCOUNTERED DURING THE WORK. VARIOUS MEASUREMENTS WERE CARRIED OUT IN ORDER TO CONSIDER THE COUNTER-MEASURES. /AUTHOR/

• Corporate Authors:

  N/A

  ,   United States 
• Authors:
  • Kawasaki, M
• Publication Date: 1966

Language

• English

Media Info

• Serial:
  • Japan Road Association Annual Reports

Subject/Index Terms

• TRT Terms: Air; Excavations; Faults; Rocks; Shale; Slate; Surfaces; Swelling; Tunnels
• Old TRIS Terms: Fault zones
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 00231099
• Record Type: Publication
• Report/Paper Numbers: pp 89-98
• Files: TRIS
• Created Date: Aug 15 2004 1:52AM