Title: Fully Mechanized Top Coal Caving Mining Technology for Ultra Thick Seam in Datong Mining Area
Abstract: According to the special conditions of the hard roof and hard coal seam in Datong Jurassic Period,Datong Coal Mine Group o-vercame the theoretical and technical problems of the hard coal caving and roof control in the Jurassic Period seam and had a safety mining of the mechanized top coal caving mining in the hard coal and hard roof ultra thick seam with the pre-mining of the top slicing seam to treat the hard roof and later with the fully mechanized top coal caving mining to mine the low slicing seam,with a technical gateway set in the top coal to make the top coal and roof softening and breaking control and others.As for the high thick seam,the complicated struc-ture,the igneous rock intrusion and other difficulty in the Datong Carboniferous Period,the high accuracy micro seismic monitoring and measuring system and the full picture digital borehole TV and other technology was applied to master the migration law of the top coal and surrounding rock and develop the special technology and equipment of the fully mechanized top coal caving mining and the references to the ultra thick seam mining in the similar condition mining area.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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