Title: Control the roof im mining overall 5 height coal seam under the 'two hard'
Abstract:Aimed at the control of roof sheet in mining over height in one times under the conditions of 'two hard', the necessariness and the reason of weaking roof is discussed, the parameter of manual enforce...Aimed at the control of roof sheet in mining over height in one times under the conditions of 'two hard', the necessariness and the reason of weaking roof is discussed, the parameter of manual enforcement roof caving is caculated, and the application effect is summariaed.Read More
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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