Evolution Characteristics of Overburden Instability and Failure under Deep Complex Mining Conditions

Table 1

Index hierarchical structure model.

Target layer	Criterion layer	Decision level
Evaluation of influencing factors of deformation and failure of deep covered rock	geohydrologic environment	groundwater seepage
		gas pressure
		ground temperature
	high ground stress	mining stress
		structural stress
	surrounding rock property	rock elastic modulus
		shear modulus of rock
		rock cohesion
		internal friction angle of rock
		rock integrity
	disturbance effect	roadway layout
		form of construction work
		mining cycle