Estimating Lateral Support Pressure for Rock Cuts at Washington-Dulles International Airport Expansion

Synopsis: Washington-Dulles International Airport (Virginia, USA) has been expanding its capacity since 1999. This expansion has required extensive vertical, open-cut … Read more »

FE Modelling for the Shallow Fort Canning Tunnel

Synopsis: The Fort Canning Tunnel, Singapore, is an approximately 15m wide vehicular tunnel that has been mainly constructed according to … Read more »

Fiber Reinforced Shotcrete for Tunnel Linings

Synopsis: The use of shotcrete for ground support is well established since several decades. However, the development of high quality … Read more »

Monitoring Successful NATM in Singapore

Synopsis: The Fort Canning Tunnel, Singapore, is an approximately 50 feet (15m) wide vehicular tunnel under shallow ground cover that … Read more »

NATM Through Clean Sands – The Michigan Street Experience

Synopsis: A 100 ft long, 20 ft high and 18 ft wide NATM tunnel was excavated through grouted clean sands … Read more »

The Dulles Corridor Metrorail and Its Tunneling Aspects

Synopsis: The Virginia Department of Rail and Public Transportation (DRPT) is currently undertaking the extension of Washington Metropolitan Area Transit … Read more »

The Dulles Corridor Metrorail Project – Extension to Dulles International Airport and Its Tunneling Aspects

Synopsis: The Virginia Department of Rail and Public Transportation and the Metropolitan Washington Airports Authority are undertaking the extension of … Read more »