SUEZ BREAKTHROUGH SEALS A HAPPY MARRIAGE

The article describes the design and construction of the Ahmed Hamdi Road tunnel under the Suez Canal. The 1640 M long, two-lane tunnel, shield driven through blue mudstone, drops over 50 M and passes only 10 M below the recently deepened canal. The primary lining consisting of rings of precast concrete bolted segments, was erected behind an 11.8 M diameter shield. Lining segments were cast from 40 n/sq mm concrete using sulphate-resisting cement. The 200 mm annulus between the excavated face and the segments was filled with dolomite chips followed by grout. The outer face of each segment was protected with coal tar epoxy. To prevent seepage of highly corrosive water, synthetic rubber gaskets surround the segments. For the first time on a tunnelling project the roadway was constructed immediately behind the shield and then used for muck shifting and service vehicles. The roadway consists of precast inverted u-culvert units with precast slab units. (TRRL)

Media Info

  • Features: Photos;
  • Pagination: p. 11-13
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00319634
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Jan 19 1981 12:00AM