List of products by author: S. Mendis

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  Ground Water Control in Headrace Tunnel for the Uma Oya Project, Sri Lanka

  Abstract: The breakthrough of the Headrace Tunnel in the Uma Oya project done on the 2nd of October 2019, which face a lot of challenges and unforeseeable geological conditions of 15.4 km. Headrace Tunnel excavated by two hard rock double shield Tunnel Boring Machines (TBMs) with 4.3 m excavation diameter in upward and downward slopes, without any middle access. Upward driven TBM excavated more than 10...

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