Numerical Simulation of the Dynamic Responses and Cumulative Damage of Underground Caverns under Multiple Explosions

Table 5

Damage index D of measuring points after each explosion.

Cavern	Measuring point	Damage index D
		First explosion	Second explosion	Third explosion	Fourth explosion
Anchored	D5	0.0408	0.4252	1.0000	1.0000
	D6	0.0000	0.0029	0.2063	0.2754
	D7	0.0000	0.0047	0.6221	1.0000
Unanchored	D5	0.0485	0.5450	1.0000	1.0000
	D6	0.0000	0.0037	0.2992	0.4430
	D7	0.0000	0.0065	1.0000	1.0000