State of Large Borehole Technology in Hard Coal Mining.

被引：0

作者：

Mertens, Volkmar

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来源：

Erzmetall: Journal for Exploration, Mining and Metallurgy | 1981年 / 34卷 / 03期

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摘要：

Large boreholes are more in demand for producing shafts, staple shafts, or airways. A prerequisite for utilization of the advantages offered by raise boring was mechanical improvement of the equipment.

引用

页码：134 / 139

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