The properties of power plant utilize the power plant for self-supply synthetically for the colliery, supply together according to the thermo-electricity, generate power for their own use, the principle of surfing the Net in surplus carries on planning and construction. The heat and power plant of waste rock uses the coal slime of the coal washery of the mine, washes and selects coal of low calorific value such as the waste rock as mixing the fuel, this not only accords with national energy-conservation and utilizes the policy synthetically, help to improve enterprise's whole economic benefits, and is favorable to environmental protection, have obvious social benefits.