Strata Control Technology Mid - I, September - 2014

1.Roof bolt capacity =
  • 12 t
  • 10t
  • 8t
  • 7t
Answer: A
2.Bolt spacing =
  • 1.6mt
  • 1.8mt
  • 1.5mt
  • 1.7mt
Answer: C
3.Distance between two rows of bolts =
  • 1.5mt
  • 1.7mt
  • 1.6mt
  • 1.8mt
Answer: A
4.No of bolts in a row =
  • 4
  • 2
  • 3
  • 1
Answer: C
5.Support system consisting of =
  • One chock and 3 steel prop
  • one chock and 4 steel prop
  • Two chock and 3 steel prop
  • one chock and 1 steel prop
Answer: A
6.For supporting gallery of 4.5 m width, i.e. for an area of 4.5m * 1.5m the rock load calculated to be
  • 4.7t/m2
  • 4.80t/m2
  • 4.9t/m2
  • 4.6t/m2
Answer: B
7.For supporting junctions of 4.5m * 4.5m the rock load calculated to be
  • 3.17t/m2
  • 3.18t/m2
  • 3.19t/m2
  • 3.16t/m2
Answer: A
8.Purpose of roof bolting is to bind the stratified or broken rock layers together and prevent _______.
  • Pillar crush
  • Stone dust explosion
  • Roof failure
  • None of above
Answer: C
9.Resin capsule is a polythene cartridge 28-35mm diameter and __________ long.
  • 300mm
  • 320mm
  • 330mm
  • 290mm
Answer: C
10.A __________ has a greater strength than timber.
  • Rigid prop
  • Hydraulic prop
  • Steel prop
  • Under set prop
Answer: C
11.Many mines have developed support rules in the form of ______________ management system
Answer: Strata control
12.Geomechanics involves the geologic study of the behavior of _____________ and ______________
Answer: Soil and rock
13.The two main disciplines of geo-mechanics are ______________ and _______________
Answer: Soil mechanics and rock mechanics
14.Many aspects of geomechanics overlap with parts of ___________ and ______________
Answer: geo-technical engineering, engineering geology.
15.Modern developments relate to ______________ and ____________
Answer: Seismology, continuum mechanics.
16.___________ is used to predict important parameters, such as in-situ rock stresses, modulus of elasticity.
Answer: Geo-mechanics
17.Formation porosity, permeability and bottom hole pressure can be derived from __________ evaluation.
Answer: Geo-mechanical
18.The geotechnical engineer or geophysicist relies on various techniques to obtain reliable _____________ models.
Answer: Geo-mechanical
19._________ can be scoped broadly or focused to suite the need. Site personnel utilize the experience.
Answer: Risk assessment
20.___________ is a structured situational analysis of a particular interaction between equipment / people/environment.
Answer: Risk assessment