Cut & Cover Metro Stations & Other Underground Structures
Vinay Gupta, Director & CEO, Tandon Consultants, discusses the intricacies and issues in the construction of underground metro stations including strata survey during structural design, selection of methods and techniques of construction, traffic management, handling of utilities, installation of diaphragm walls, launching and retrieving of TBM, manufacturing of precast segments and more.
Underground construction poses several new challenges such as execution of Diaphragm Walls for Top-down or Bottom-up construction, Secant Piles for Bottom-up construction, Soldiers Pile-Wooden Lagging for Bottom up construction, etc. Installation of Diaphragm Walls is easy in soil sub strata, but extremely difficult in rock substrata. In such cases, use of Trench Cutter becomes necessary.