Tag Archives: excavation
Umbrella Arch
The umbrella arch is a temporary support system forming a structural umbrella from the insertion of an assortment of longitudinal support members installed from within the tunnel, above and around … Continue reading
Drill and Blast Method
Drill and blast method is mostly used method for the excavation throughout the world. The method can be used in all types of rocks and the initial cost is lower … Continue reading
Ground Anchor
A prestressed grouted ground anchor is a structural element installed in soil or rock that is used to transmit an applied tensile load into the ground. Grouted ground anchors, referenced simply … Continue reading
Diaphragm Wall Construction
Diaphragm wall is a continuous wall constructed in ground in to facilitate certain construction activities, such as: As a retaining wall As a cut-off provision to support deep excavation As … Continue reading
New Austrian Tunneling Method (NATM)
The New Austrian Tunneling method (NATM) was developed between 1957 and 1965 in Austria. It was given its name in Salzburg in 1962 to distinguish it from old Austrian tunnelling … Continue reading