Daftha-Shis Tunnel , Dubai, UAE



Daftha-Shis Road & Tunnel in Dubai, UAE


Government of Sharjah, Directorate of Public Works


Construction period:    
January 2006 - August 2010


Main contractor:
General Mechanic Company


VSL Middle East LLC


Scope of supply:
Portal: 400 pcs. thread bars SAS 670/800 Ø 18 mm, L = 6.15 m, domed washer 30°, bull nose nut 30°, Tunnel: 25,000 pcs. thread bars SAS 500/550 Ø 25 mm, L = 4.15 m, domed washer 30°, dome nut 30°, resin cartridges


SAS thread bars are used as rock nails for the portal face and as rock bolts for the inner tunnel layer. The SAS thread bars and accessories for the portal are hot-dip galvanized. The tunnel exists of two tunnel sections with a length of 1,250 km and 1,275 km. During installation the rock bolts are stressed up to 50 kN. The bond length of the cartridges is 3 m.