Authors: C.R. Donnelly, J. Ritchie and V. K. Sharma, NHPC Limited
Waterpower XVI Conference, Spokane, Washington, July 29, 2009
Abstract
The engineering and construction of the portals at the Chamera project in India required a variety of techniques and the resolution of a number of unique problems associated with the complex and often quite variable geology of the Lesser Himalayas. The engineering and construction activities were unique in a number of ways including the size of some of the excavations, difficult access and sometimes unfavourable geology. Also worthy of note was the use of state-of-the-art tunnelling, excavation and rock support techniques, many of which were introduced to engineers and contractors working on this project for the first time.
