GRADING METHOD OF MINES/MINING AREAS FOR WATER-PRESERVED MINING

摘要

A grading method of mines/mining areas for water-preserved mining, comprising: using a mine as a calculating unit to calculate the ton-coal water resource amount, and dividing the mine in a study area into different types according to the relationship between the distribution of the ton-coal water resource amount and the ton-coal water resource consumption amount, and forming a mine ton-coal water resource storage amount grade map; determining the thickness of a protective layer according to the relationship between the water leakage of a shallow surface layer and the water supply of the shallow surface layer, dividing the mine in the study area into different environmental engineering geological modes, and forming a mine environmental engineering geological mode distribution map; and finally, grading the mines/mining areas for water-preserved mining in the study area. The method is simple and practical, the water-preserved mining grade of the mines is divided visually, a basis for selecting a mining method in the mining area is provided, and a great significance for the water-preserved mining in fragile ecological environment areas in northwest China is achieved.