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Table 1.

Experimental data in physical simulation and numerical model.

Parameter Parameter value Parameter Parameter value
Permeability of matrix (10−3μm2) 0.57 Permeability of gravel (10−3 μm2) 0.12
Young’s modulus of matrix (GPa) 36.7 Young’s modulus of gravel (GPa) 50.1
Tensile strength of matrix (MPa) 8.1 Tensile strength of gravel (MPa) 12.4
Poisson’s ratio of matrix 0.248 Poisson’s ratio of gravel 0.247
Maximum horizontal stress (MPa) 15 Viscosity of fracturing fluid (mPa s) 120
Minimum horizontal stress (MPa) 5 Injection rate (mL min−1) 20
Gravel size of Speciment I (mm) <20 Gravel size of Speciment II (mm) 40–100

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