Q221
Open questionThe length of wedge used in slot and wedge type bolt
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Mining Engineering · all questionsMine Supports and Strata Control
Mine Supports and Strata Control
practice.
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320
Questions
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Q222
Open questionOne mega pascal is equivalent to
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Q223
Open questionThe compressive strength of most of the rocks is greater than,
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Q224
Open questionArch supports are made of
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Q225
Open questionPay load means
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Q226
Open questionMulti point extenso meter used for measuring
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Q227
Open questionThe drilling of vertical holes in roof and fixing bolts bolls grip the strata and to support immediate roof called
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Q228
Open questionThe diameter of old wire ropes, employed for roof stitching.
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Q229
Open questionThe process which involves reacting the ore with liquid solvent that will dissolve the mineral at low or moderate temperature and pressure is called
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Q230
Open questionThe filler in capsule bolting consists
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Q231
Open questionThe tapered props are used where the floor is . . . . . . . . and roof is . . . . . . . .
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Q232
Open questionThe roof above gallery height of . . . . . . . . m tested with bamboo shoded with iron.
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Q233
Open questionSetting load should not be less than . . . . . . . . tonnes in a seam of moderate thickness above 1.2 m.
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Q234
Open questionShield has a sloping regid one piece roof of adjustable inclination on the goaf side, thus results elimination of side loading on . . . . . . . .
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Q235
Open questionYeilding props are classified into . . . . . . . . types.
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Q236
Open questionChock is errected in between four corner props are generally not necessary except
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Q237
Open questionWhich bar is strongest and offers more resistance to bending.
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Q238
Open questionIn Jharia coal field, the quality of coal . . . . . . . . with the depth.
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Q239
Open questionThe maximum gap between two chock shield support is
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Q240
Open questionSafe limit of tensile strain in forest land is . . . . . . . . mm/m as per the guide lines of the Ministry of environment and forests.
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