A Vibration-Isolating Blast Technique with Shock-Reflection Device for Dam Foundation Excavation in Complicated Geological Conditions

Table 1

The intensity of transmission and reflection wave at the interface.

Sonic impedance (kg/m^3·m/s)			Interface B		Interface C
Explosion products	Concrete	Coarse sand	R	T	R	T
3.60×10^6	1.85×10^7	4.25×10^6	0.67I	1.67I	-0.63I	0.37I