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Advances in Civil Engineering
/
2018
/
Article
/
Tab 5
/
Research Article
Effect of Adjacent Hole on the Blast-Induced Stress Concentration in Rock Blasting
Table 5
Experimental group parameters of different adjacent empty hole radii.
Number
r
1
(cm)
a
(cm)
R
2
(cm)
r
2
/
r
1
Model 1
2.5
37.5
1.25
0.5
Model 2
2.5
37.5
2.5
1
Model 3
2.5
37.5
3.75
1.5
Model 4
2.5
37.5
5
2
