Shock and Vibration / 2016 / Article / Tab 4

Research Article

Research on Effects of Blast Casting Vibration and Vibration Absorption of Presplitting Blasting in Open Cast Mine

Table 4

Mechanical parameters of rock mass of Heidaigou open cast.

StratumDensity (kN/m3)Internal friction angle (°)Cohesion (kPa)

Loess19.5029.545.1
Sandy mudstone24.5030135
Fine sandstone24.5028150
Medium sandstone22.7031.5150
Coarse sandstone22.4032.0130
Weathered mudstone24.729.0127.5
Coal1435185.1
Siltstone24.531.3176.8

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