The North China Coalfield is often engaged in deep coal mining because of the depletion of shallow coal resources. With the increase in the depth of coal mining, the underground hydrogeological ...

WATER is one of the most valuable resources for human survival, economic development and environmental sustainability.

With the development of economy and society, the demand for mineral resources is steadily escalating. Mineral resources serve as the indispensable material foundation for human production activities 1 ...