Advances in Civil Engineering / 2018 / Article / Tab 2

Research Article

Elastoplastic Analysis of Circular Opening Based on a New Strain-Softening Constitutive Model and Its Engineering Application in Hydraulic Fracturing

Table 2

Geometrical and physical parameters of circular opening (data from Li et al. [23]).

ParameterValue

Radius of opening, (m)0.1
In situ stress, (MPa)15
Inner pressures, (MPa)0 or 40
Young’s modulus, (MPa)1500
Dilatancy coefficient, 1.0
Poisson’s ratio, 0.3
Brittleness coefficient, 0.5
Internal friction angle, (°)30
Initial compressive strength, (MPa)8
Residual compressive strength, (MPa)1

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