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

Table 2

Relevant calculation parameters.

Parameters	Values
Slope angle, α (°)	30°
Thickness of loose layer, H (m)	12
Cohesion, c (kPa)	10
Internal friction angle, φ (°)	25°
Unit weight, γ (kN, m³)	21
Lateral pressure coefficient, ζ	0.4
Initial support force, T (kPa)	0
Thickness-span ratio, x	1.2
Rise-span ratio, η	0.8