Question: With reference to the sketch, show in detail the determination of the optimum bolting angle using the givennotation. Bolt Joint Joint normal A Rock line

With reference to the sketch, show in detail the determination of the optimum bolting angle using the givennotation.

Bolt Joint Joint normal A Rock line K = joint cohesion =

Bolt Joint Joint normal A Rock line K = joint cohesion = joint friction angle F = bolt force A = rock area influenced by the bolt x = angle from roof line to joint normal B = angle from roof line to bolt %3D

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