Shock and Vibration / 2018 / Article / Tab 2

Research Article

Analysis of the Critical Safety Thickness for Pretreatment of Mined-Out Areas Underlying the Final Slopes of Open-Pit Mines and the Effects of Treatment

Table 2

Physical and mechanical parameters of rock mass and soil.

Type of rock
mass and soil
Weight γ
/kN/m3
Cohesion c
/kPa
Angle of internal friction φ

Quaternary18.72725
Marble26.59031
Skarn37.617032
Granite26.418033
Filling20.08527

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