The paper explains the system for boring tunnels. It gives detailed accounts of the tail seal to maintain slurry pressure, control of water pressure at the tube-head, collapse of the tube-head and the separation of sand and silt from the slurry/water mix. As actual operating examples, it gives a summary of an undersea tunnel excavated by a 7,290-millimeter diameter Mud Circulation Shield (MCS) and a high pressure tunnel with a 4. 3-kilogram-per-square-centimeter water head that was bored by a 2,620-millimeter diameter MCS employing both slurry pressure and compressed air.

  • Corporate Authors:

    International Ocean Development Conference

    Japanese Management Association
    Tokyo,   Japan 
  • Authors:
    • YOSHIDA, H
  • Publication Date: 1975-8

Media Info

  • Pagination: 11 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00156335
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Oct 13 1977 12:00AM