Work at the Ta Trach project, located in Vietnam’s Hue province, began in July 2009 and Cavico Mining has completed approximately 152m of tunnel work with diameter of 10.5m from outlet to the surge shaft tank. For the next phrase of the dam project, Cavico Mining will dig a tunnel from the surge shaft tank to the intake.
Cavico Power and Resource Construction has also completed 268m of tunnel at the Hua Na hydropower plant, in the Nghe An province. Work began on this project a in June 2009. The company will now construct a diversion tunnel and a cofferdam for the upper and lower streams.
Work on the projects has been carried out successfully, despite the fact that the north central regions of Vietnam have been heavily affected by flood and storms in the recent months.