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- W2305763380 abstract "The Central Mining Research Station, Dhanbad, has taken up a project on “Roof bolting” to study the suitability and effectiveness of roof bolting in Indian Mining conditions. Roof bolt anchorage pull tests were completed in 13 collieries so far and suggestions were made regarding the optimum bolt parameters which give the best anchorage under the exiting mining conditions. In some collieries where bolting was practiced earlier, the anchorage efficiency was increased to double after implementing the suggestions. To investigate the effectiveness of roof bolting to replace the conventional supports, a few experimental galleries were taken up for systematic bolting in 3 collieries with bad roof conditions. The laboratory investigations include development of instruments for underground observations and study of the anchorage characteristics in different rocks. The old haulage ropes are being experimented for roof support, and grouted bolts are also tried to support the weak strata which does not afford adequate anchorage with the ordinary bolts. Some practical suggestions for an efficient bolting operation are included in this paper." @default.
- W2305763380 created "2016-06-24" @default.
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- W2305763380 date "1967-05-01" @default.
- W2305763380 modified "2023-09-24" @default.
- W2305763380 title "Roof Bolting Investigations in Indian Mines" @default.
- W2305763380 hasPublicationYear "1967" @default.
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