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Advances in Civil Engineering
/
2019
/
Article
/
Tab 4
/
Research Article
Safety Threshold Determination for Blasting Vibration of the Lining in Existing Tunnels under Adjacent Tunnel Blasting
Table 4
Explosive parameters.
Density (g/cm
−3
)
Detonation velocity (m/s)
Detonation pressure (GPa)
A
(GPa)
B
(GPa)
R
1
R
2
ω
(GPa)
E
0
(GPa)
1.0
4500
506
5.24
e
4
76.9
4.2
1.0
0.3
0.85