Advances in Civil Engineering / 2018 / Article / Fig 4

Research Article

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

Figure 4

Stress distribution law for borehole expansion (note: because the maximum critical inner hydraulic pressure is taken as the calculated inner pressure, the fracture zone does not appear).
(a)
(b)

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