(Proceedings of Conference on Large Dams and Hydropower Development, 26–28 May 2004, New Delhi, pp.V/33–40).
Excavation of shafts has been a difficult, costly and time consuming process. In recent times there has been some mechanization, however, the conventional and semi mechanized methods still seem to dominate. Different methods have been followed for excavation of shafts and the paper briefly describes them. Experience of the authors with regard to excavation of a surge shaft at Tala hydroelectric project in Bhutan has been dealt.
Excavation, Shafts, Mechanization, Conventional, Semi mechanized methods
