Q101
Open questionPressure Arch Theory deals with
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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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Q102
Open questionThe first fully mechanised L/W face with power supports was introduced in India at
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Q103
Open questionThe cross section of the sleeper used as cog.
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Q104
Open questionIn the tapered prop, tapered end should be in contact with . . . . . . . .
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Q105
Open questionIdentify the diseases of timber
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Q106
Open questionTo protect surface structure from subsidence, the width of excavation should be
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Q107
Open questionThe strength of concrete in tension is equal to
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Q108
Open questionMost important property of mud is
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Q109
Open questionThe mesh of wire gauze employed for roof stitching
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Q110
Open questionIt is one which is capable of building up of maximum load with minimum yeild, which reduces convergence and bed separation.
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Q111
Open questionMassive roof consists mostly
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Q112
Open questionIn safari support the minimum number of laggings to be given is decided as
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Q113
Open questionWhich roof is reliable
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Q114
Open questionFor a given perimeter the greatest area of support is offered by
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Q115
Open questionThe lid and wedges should be atleast of same width as . . . . . . . . of prop.
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Q116
Open questionRoof falls or floor heaving occurs predominently in the areas where the average extraction ratio is
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Q117
Open questionThe length of lid is . . . . . . . . placed over the-prop.
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Q118
Open question'Phons' is a unit of
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Q119
Open questionThe weight of the rocks in coal mining areas exerts a pressure of nearly . . . . . . . . for every meter depth.
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Q120
Open questionThe first mining institution [degree in mining] IITBHU Varanasi, was erected in the year
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