Advances in Civil Engineering / 2021 / Article / Tab 5

Research Article

Analysis of Ground Movement during Large-Scale Pipe Roof Installation and Artificial Ground Freezing of Gongbei Tunnel

Table 5

Thermo-physical properties and frost heave ratio of soil strata.

Soil stratumSpecific heat (J·(kg·K)−1)Thermal conductivity (W·(m·K)−1)Frost heave ratio (%)
BA−20°C−10°C−0.5°C10°C20°CBA

Fill142013602.2921.9741.7651.6331.2956.635.46
Clay and silt ③-1141013402.2482.0531.7951.4211.2456.595.23
Fine to coarse sand ③-3140013302.2452.0491.7631.4131.2244.253.53
Sandy clay and silt ④-3151014502.3912.0111.8851.7341.4096.325.02
Fine sand ⑤-2142013602.3582.0732.0081.7481.4794.133.61
Fine to coarse sand ⑥-2143013602.3382.0511.8781.6811.3753.822.88
Silty clay ⑦-1158014702.3712.0911.8961.6841.5415.364.37

Note. B represents soil parameters before grouting; A represents soil parameters after grouting.

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