Vibration Failure of Young Low-Temperature Concrete Shaft Linings Caused by Blasting Excavation

Table 1

Blasting parameters.

Diameter no.	Hole number	Diameter (m)	Angle (°)	Explosive quantity (kg)	Hole distance (mm)	Segment	Segment explosive amount (kg)
1	9	1.4	86	44.1	479	I	44.1
2	12	2.4	87	50.4	621	II	50.4
3	18	3.6	90	63	625	III	287.7
4	26	5	90	109.2	603
5	33	6.4	90	115.5	608
6	40	8	90	168	628	IV	325.5
7	45	9.6	90	157.5	670
8	52	10.7	93	145.6	646	V	145.6