Research Article

Stability Analysis of Blasting Excavation for High Rock Slope of Highway Reconstruction and Expansion

Table 1

Parameters of this blasting.

ParameterValue

Blasthole diameter (d)
Blasthole step height (H)
Beyond the depth ()
Blasthole depth (L)
Chassis resistance line (w)
Blasthole density factor (m)
Blasthole distance (a)
Row spacing (b)
Unit explosive consumption (q)0.2 kg/m3
Tamping length (l)
Maximum explosive charge ()38 kg