Prediction of Landslide Position of Loose Rock Mass at Mountain Tunnel Exit

Table 3

Relevant calculation parameters.

Parameters	Values
Slope angle, α (°)	30°
Thickness of loose layer, H (m)	10
Cohesion, c (kPa)	20
Internal friction angle, φ (°)	26°
Unit weight, γ (kN, m³)	19
Lateral pressure coefficient, ζ	0.38
Initial support force, T (kPa)	0
Thickness-span ratio, x	0.8
Rise-span ratio, η	0.7