Dafta Shis Tunnel

Daftha-Shis Tunnel , Dubai, UAE

TUNNELING & MINING

 

Project:    
Daftha-Shis Road & Tunnel in Dubai, UAE

 

Client:     
Government of Sharjah, Directorate of Public Works

 

Construction period:    
January 2006 - August 2010

 

Main contractor:
General Mechanic Company

 

Supplier:
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

 

Application:    
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.