The Seepage-Creep Numerical Simulation Model of Coal Measures Sandstone Based on Particle Discrete Element

Table 1

Macroscopic mechanical parameters of coal measure sandstone.

Parameters	Value	Parameters	Value
Volumetric weight	2487 kg/m^3	Cohesion	2.06 MPa
Elastic modulus	13.5 GPa	Friction angle	40^°
Shear modulus	6.01 GPa	Tensile strength	1.13 MPa
Poisson ratio	0.23	Compressive strength	125 MPa