Experimental Study on Quasi-Static Pressure of Slot Hydraulic Blasting

Table 3

Theoretical calculation result.

	150 mg	200 mg	250 mg
PAg (Pa)	5 × 10^4	9 × 10^4	1.4 × 10^5
PA (Pa)	1.51 × 10^5	1.91 × 10^5	2.41 × 10^5
ba (m)	0.0048	0.00728	0.00952
Pc (Pa)	1.81 × 10^6	4.7 × 10^6	9.9 × 10^6
bw (m)	0.000161	0.00035	0.000592
Pw (Pa)	1.58 × 10^6	3.52 × 10^6	6.19 × 10^6
Pwtg (Pa)	1.48 × 10^6	3.42 × 10^6	6.09 × 10^6
Pwg (Pa)	2.3 × 10^6	3.3 × 10^6	5.3 × 10^6
Measured multiples	46	36.67	37.86
Theoretical multiples	29.6	38.04	43.52

Note: P_A and P_w are absolute pressures, P_Ag and P_wg are measured gauge pressures, and P_wtg is the theoretically calculated gauge pressure.