Geofluids / 2020 / Article / Tab 1

Research Article

Mechanical Analysis of Mining Stress Transfer on Isolated Island Face in Extra-Thick Fully Mechanized Top-Coal Caving Mining

Table 1

Mechanical parameters of coal–rock.

Medium nameShear modulus (GPa)Bulk modulus (GPa)Cohesion (MPa)Friction angle (°)Tensile strength (MPa)

Medium fine sandstone1.621.712.6350.62
Sandy mudstone0.910.863.337.52.25
Coal seam0.670.501.3280.54
Fine sandstone1.041.143.3330.82
Coarse sandstone1.541.683.3350.40

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