Table 12 Adjustment of Factors and Their Impact on Slope Stability.
Adjustment factor | Classification and impact on slope stability | Impact nature | |
|---|---|---|---|
Seasonal (Climatic) Variations | Rainfall | Weakens shear strength, increases bulk density, and exacerbates sliding force, reducing slope stability | Unfavorable |
Freeze–thaw | Damages the geotechnical structure, reduces shear strength, changes pore water pressure, lowering slope stability | Unfavorable | |
Wind erosion | Strong winds carrying sand particles erode the slope surface, reducing overall slope stability | Unfavorable | |
Slope Along-strike Surface Shape | Concave Slopes | Local stress concentration, better stability | Favorable |
Linear Slopes | Uniform stress distribution, moderate stability | Neutral | |
Convex Slopes | Tensile stress dominates, lower stability | Unfavorable | |
Fault Characteristics | Favorable Faults | Faults can create sliding surfaces or block water flow, improving slope stability | Favorable |
Unfavorable Faults | Fault zones are fractured, with low shear strength, forming potential sliding surfaces and seepage paths that accelerate water erosion and softening | Unfavorable | |
No Faults | No impact on slope stability | Neutral | |
Distribution of Infrastructure | Proximity to critical infrastructure (e.g., buildings) increases life and property loss risks | Unfavorable | |
Ordinary Areas, No Significant Facilities: Higher stability | Neutral |
