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More Mining Engineering Questions
All stopping erected for isolation or control of fire inspected by a competent person once atleast in every . . . . . . . . days.
The uniaxial compressive strength of a limestone sample is 80 MPa. The sample is confined at a pressure of 20 MPa in a triaxial compressive strength test. Based on Hoek-Brown failure criteria the maximum principal stress at failure in MPa is (Consider rock constants as m = 7.88, s = 1.0 and a = 0.5)
Suitable arrangements shall be made for descend and ascend, arrangements are made by mechanical means so installed and maintained to be constantly available for use if the depth of the shaft more than . . . . . . . . meters.
Powered support is used in
The line of intersection of the quarry side with its floor.