The recycling mode and technique of water in desertification area of Shendong Coal Mine

Developing the water resources recycling mode and technology in desert area of Shendong Coal Mine is the key factors to construct and optimize the ecological functions of mining area as the water resources are extremely deficient. During the process of using the water resources, we must follow the two principles, one is that the balance principle of water recycling, the other is the principle of extending single cycling and using repeatedly. During the process of protective coal mining, the underground water experienced the balance circulating system such as waterpreserved mining, goaf purification and recycling. Based on the water-preserved mining, this paper realize the water balancing and water cycling in the desert area of Shendong Coal Mine through the sewage purification, ecological irrigation utilization and the closed-circuit water cycle of coal washery. At the same time, combining with water purification and using technology of open-air mining pit, Shendong Coal Mine laid a foundation for the regional environment and sustainable development of the economy.