Advances in Civil Engineering / 2021 / Article / Tab 4

Research Article

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

Table 4

Soil parameters before and after grouting.

Soil stratumThickness (m)Unit weight (kN/m3)PorosityPermeability (cm/s)Poisson ratioWater content (%)
BABABABABA

Fill7.518.520.70.670.63.44e − 51.72e − 50.350.2316.112.8
Clay and silt ③-12.515.417.20.670.62.29e − 71.14e − 70.270.2138.133.6
Fine to coarse sand ③-35.020.022.40.310.278.55e − 41.70e − 50.250.2213.512.2
Sandy clay and silt ④-34.017.920.00.550.53.48e − 71.74e − 70.300.2138.033.3
Fine sand ⑤-210.020.522.90.260.224.61e − 31.70e − 50.280.2313.512.2
Fine to coarse sand ⑥-22.519.521.80.320.283.31e − 21.70e − 50.230.2310.29.2
Silty clay ⑦-111.518.020.20.660.596.96e − 73.48e − 70.230.2133.026.4

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

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