Question: Question 3 There are two structural weakness planes emanating from the corners of the opening with a flat roof. The inclinations of the discontinuities are

Question 3
There are two structural weakness planes emanating from the corners of the
opening with a flat roof. The inclinations of the discontinuities are 60 and 120
respectively. The unit weight of the rock is 20kNm3, and the span of the opening is
10 m . Determine the total support force per metre length of opening required to
prevent failure of the roof wedge.
Question 3 There are two structural weakness

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