Skip to main content

Table 4 Soil properties of the actual highway slope at Nakayama Pass

From: Probability assessment of slope instability in seasonally cold regions under climate change

Soil properties

Embankment filling

Talus materials

Dry density of soil d)

1400 kg/m3

1200 kg/m3

Porosity (n)

0.47

0.53

Unfrozen thermal conductivity u)

127.04 kJ/(Day∙m∙°C)

103.7 kJ/(Day∙m∙°C)

Frozen thermal conductivity f)

132.24 kJ/(Day∙m∙°C)

135.7 kJ/(Day∙m∙°C)

Volumetric water content of soil at 0 °C (θwf)

0.15 m3/m3

0.10 m3/m3

Hydraulic conductivity of saturated soil (ks)

5.62 × 10−7 m/s

1 × 10−4 m/s

Unfrozen volumetric heat capacity u)

2237 kJ/(m3∙°C)

2398 kJ/(m3∙°C)

Frozen volumetric heat capacity f)

1624 kJ/(m3∙°C)

1392 kJ/(m3∙°C)

Effective cohesion (c’)

9.75 kPa

52 kPa

Effective angle of internal friction (ϕ’)

35°

11.36°