Tuesday, 7 August 2012

Career Spot 77: JumboTests Updates: Updated: Question in GATE 2012 Mining Engineering Paper with Solution

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JumboTests Updates: Updated: Question in GATE 2012 Mining Engineering Paper with Solution
Aug 7th 2012, 09:10

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Updated: Question in GATE 2012 Mining Engineering Paper with Solution
Aug 7th 2012, 08:43

A question in GATE 2012 Mining Engineering Paper with Solution has been updated:

An opencast mine bench has a potential failure plane AC as indicated in figure. Bolts are installed to stabilize the failure plane providing a resultant bolting force of 300 kN. The area of sliding block ABC is 37.45  m^2 . The unit weight, cohesion and angle of internal friction of rock are 25  kN/m^3, 20 kPa and  40^0 respectively.

The factor of safety of slope when bolts are installed perpendicular to the failure plane is

  1. 1.08
  2. 0.79
  3. 1.78
  4. 3.46

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