Study on the Attenuation Characteristics of Seismic Wave Energy Induced by Underwater Drilling and Blasting

Table 3

Detailed blasting design parameters.

Hole diameter (mm)	Hole depth (m)	Extra-deep (m)	Hole space (m)	Array pitch (m)	Number of hole	Delay time (ms)
110	7.2∼13.7	1.5	2	2.5	9∼12	25∼125