Quantitative method for water resource effect in coal mining subsidence area

The invention provides a quantitative method for the water resource effect in a coal mining subsidence area. The quantitative method includes the steps of obtaining a first accumulated water area and a first accumulated water level in a accumulated water area in the coal mining subsidence area; obtaining a second accumulated water area and a second accumulated water level in the accumulated water area in the coal mining subsidence area; obtaining the average accumulated water area in the accumulated water area in the coal mining subsidence area according to the first accumulated water area and the second accumulated water area, and obtaining the average accumulated water level of the accumulated water area in the coal mining subsidence area according to the first accumulated water level and the second accumulated water level; quantifying the water resource effect in the coal mining subsidence area according to the average accumulated water area, the average accumulated water level and the underground water level through a water amount balance relationship. The quantitative method for the water resource effect in the coal mining subsidence area can work out the water resource composition and water circulation process of the coal mining subsidence area without many various observation experiments developed for a long time, save the work cost, and reduce research difficulty.