Figure 7
From: Stress transfer law in laboratory hydraulic fracturing experiments
Variation of stresses inside specimen 2 with the loading time: (a) Curing for 15 days, stress 9 - 9 - 9 MPa; (b) Curing for 30 days, stress 9 - 9 - 9 MPa; (c) Curing for 36 days, stress 20 - 20 - 20 MPa; (d) Curing for 37 days, stress 30 - 30 - 30 MPa.
