Advances in Civil Engineering / 2020 / Article / Tab 3

Research Article

Simulation Study of the Roof Fracture Pattern of a Horizontal Sublevel Caving in a Steeply Inclined Thick Coal Seam

Table 3

Physical and mechanical parameters of coal and rock mass.

RockBody force γ (kN/m3)Elasticity modulus E (GPa)Poisson’s ratio vTensile strength (MPa)Cohesion (MPa)Friction angle (°)

Main roof28.733.40.2351.293.242
Immediate roof24.817.70.2040.581.233
Coal13.35.30.320.151.2532
Immediate floor24.817.70.2040.581.233
Main floor24.619.50.21.842.7538

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