International Scholarly Research Notices / 2014 / Article / Tab 2

Research Article

Study of Surface Displacements on Tunnelling under Buildings Using 3DEC Numerical Modelling

Table 2

Rock/soil properties considered for strata.

Layer Depth from surfaceDensity
(kg/m3)
Bulk modulus
(Pa)
Rigidity modulus
(Pa)
Cohesion
(kPa)
Angle of internal friction

Clayey silt0–0.5 m18001.867 × 1070.622 × 1071032°
Silty sand0.5 m–1 m20003.9 × 1072.85 × 107534°
Sandstone/weathered rock1 m-2 m24003.3 × 1081.1 × 108150042°
Moderately weathered rockFrom 2 m to a great depth25004.76 × 1081.47 × 108200050°

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