Vibration Response Characteristics of Adjacent Tunnels under Different Blasting Schemes

Table 1

Blasting parameters.

3.0 m blasting scheme					1.5 m blasting scheme
Number of stages	Hole depth (m)	Number of holes	Single-hole dose (kg)	Total charge (kg)	Number of stages	Hole depth (m)	Number of holes	Single-hole dose (kg)	Total charge (kg)
5	4.5	8	3.0	24	1	3	4	1.2	4.8
15	4	4	1.5	32.4	15	2	6	0.8	12.8
	4	8	2.4			1.8	8	1
	4	3	2.4			2	8	0.6
19	3.5	14	1.5	54	19	1.7	27	0.5	22.7
	3.5	4	1.8			1.8	12	0.6
	2.8	2	2.4			1.8	2	1