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METHOD OF AND DEVICE FOR MECHANICALLY DRIVING CLEAN-CUT GALLERIES OF VARIOUS PROFILES IN UNDERGROUND MINING
METHOD OF AND DEVICE FOR MECHANICALLY DRIVING CLEAN-CUT GALLERIES OF VARIOUS PROFILES IN UNDERGROUND MINING
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机译:机械驱动地下开采各种剖面的清晰资料库的方法和设备
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摘要
A method for mechanically advancing clean cut underground mining galleries of various profiles, in which during a primary phase of the operation a pilot excavation of circular cross-section smaller than the final desired cross-section of the mining gallery is carried out and in which during a secondary phase of the operation, overlapping in time with the primary phase, the pilot excavation is widened to the desired finished cross-section of the mining gallery; and a machine for carrying out the method.
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