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Table 6.

The fracture parameters of coal rock sample after 6 MPa hydraulic fracturing.

Fracture number Fracture type Fracture length (mm) Fracture width (mm) Dip angle of Fracture Tip (rad) Azimuth of Fracture Tip (rad)
1 Transverse 15 0.16 0.43 0.09
2 Longitudinal 15 0.09 1.53 0.09
3 New transverse 13 0.15 1.54 0.88

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