Mangdechhu – I Hydroelectric Project
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The Mangdechhu hydroelectric project is a 720 MW run-of-river power plant being built on the Mangdechhu River in Trongsa Dzongkhag District of central Bhutan. The project comprises of a 101.5 m high concrete gravity dam from the deepest foundation level, two intake tunnels of 196 m and 150 m length, and a 13.54 km long headrace tunnel capable of discharging 118 m³ of water per second. The 152 m high surge shaft has a diameter of 13.5 m. Water is fed to the underground powerhouse through two steel-lined pressure shafts (1,853 m long and 3.5 m in diameter). The main cavern of the underground powerhouse is 53 m high and 231 m long.
Encardio-rite was awarded the contract for monitoring of dam, powerhouse, intake, desilting chamber, surge shaft, pressure shafts, and adits. Turnkey services included:
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