A New Evaluation Method for Water Blocking Performance of Coal Seam Floor: Model Construction, Case Application, and Water-Preserved Strategy

Table 1

Evaluation index system of water resistance toughness of coal seam floor.

Target layer	Criterion layer	Indicator layer
Water resistance toughness of coal seam floor	System vulnerability elements	Coal seam mining impact
		Performance of the water-resisting strata
		Water inrush intensity of aquifer
		Influence of geological structure
	System recoverability elements	Drilling technology
		Reinforcement technology
		Detection technology
	System adaptability elements	Surface ecological governance
		Water resources carrying capacity