Experimental and Numerical Simulation Study of Hydraulic Fracture Propagation during Coalbed Methane Development

Table 1

Mechanical parameters of similar material test blocks and coal #15.

	Elastic Modulus (GPa)	Poisson’s ratio	Compressive strength (MPa)
Coal #15	1.59-4.67	0.21-0.35	9.49-13.5
Specimen 1	2.94	0.23	11.36
Specimen 2	2.41	0.27	12.75