Abstract: The water tunnel of coal burning power plant, which is the Second Phase of Dengfeng Electricity Co., Let, Huarun Group, is underneath the rock mass with complicated geological and hydrological conditions.  The tunnel construction techniques under the adverse conditions such as, fractured rock mass zone, running sand and groundwater rush are discussed in thepaper.

Key words: coal burning power plants, water tunnels, fractured rock mass, quicksand layers, water rush