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

Table 2

Drilling and blasting parameters of the experiment.

Borehole diameter	Hole depth	Spacing	Charge diameter	Charge length	Charge weight	Stemming length
100 mm	6.0~6.3 m	3.5 m	32 mm	4.5 m	4.5 kg	1.5 m