Research Article

Effect of Underground Coal Mining on Slope Morphology and Soil Erosion

Table 1

Main strata and lithological parameters of the model.

Stratigraphic lithologyBulk modulus (MPa)Shear modulus (MPa)Tensile strength (MPa)Cohesion (MPa)Internal friction angle (°)Density (kg/cm3)

Sandy mudstone300022500.752.16362510
Coarse sandstone420029001.55342560
Medium sandstone330025001.24372580
Fine sandstone2700160012352540
Conglomerate333020008.53382300
4# coal10000.460.61.2281430
Loess2800.090.350.85251960