Cold region energy tunnel multi-heat-source heating system

The invention provides a cold region energy tunnel multi-heat-source heating system which comprises a heat collecting and supplying assembly, a power supply assembly and a temperature control and feedback assembly which are sequentially connected, and the heat collecting and supplying assembly is connected with the temperature control and feedback assembly. The heat collection and supply assembly comprises a heat collection pipe loop, a heat pump set and a heat supply pipe loop which are sequentially connected, the heat pump set is connected with a heat recovery heat exchanger, the heat collection pipe loop collects geothermal energy in the middle of the tunnel, and the heat recovery heat exchanger collects waste heat in the tunnel and supplies the waste heat to the heat supply pipe loop. The heat pump set is responsible for heating circulating liquid and driving the circulating liquid to flow, the heat supply pipe loop heats a tunnel portal, the power supply assembly provides electric energy for the heat col