Table 3: Kaiser point stress value of rock sample.

AzimuthSample numberStress value (MPa)Average value (MPa)Remarks

Horizontal direction 225°225°-17.19.27
225°-28.8
225°-311.5
225°-49.7

Horizontal direction 270°270°-113.517.25
270°-214.5
270°-319.4
270°-421.6

Horizontal direction 315°315°-14.118.13
315°-222.8
315°-3Failure
315°-427.5

Vertical direction 90°90°-111.811.73
90°-2Failure
90°-39.1
90°-414.3