Geofluids / 2019 / Article / Tab 1

Research Article

Study of the Fracture Law of Overlying Strata under Water Based on the Flow-Stress-Damage Model

Table 1

Mechanical parameters of the main strata.

LithologyBulk modulus (GPa)Shear modulus (GPa)Cohesion (MPa)Tensile strength (MPa)Friction (°)

Mudstone0.60.320.50.628
Fine sandstone1.631.22.51.132
Medium sandstone1.61.142.21.031
Siltstone1.871.122.01.030
Coal0.80.140.30.526

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