Abstract
For some common problems during exposing coal seam, the six-steps exposing coal seam technology is present, which includes prediction, pre-extraction, framework, reinforcement, protection and emission. The key content of six-steps technology is pre-extract from coal seam and reinforce the roof coal mass of the rock cross-cut. Drill site is constructed in the position in 5m normal distance from working site, then cross-measure boreholes are drilled separately from rock cross-cut and runaround way to the expose zone. The separation of the boreholes is 2~3m and the control range is 10m surrounding the rock cross-cut. The pre-extraction of coal seam should not be less than 6 months. Malisan is injected into the roof of rock cross-cut to form a false roof, and then boreholes are drilled into cracking zone upper to the false roof. After that, Rock show is injected into the zone to fill the cracks of the rock. So the hard false roof above the tunnel is formed, and the coal seam with sever gas and coal outburst risk under complicated geological conditions is safety exposed.
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© 2011 Springer-Verlag Berlin Heidelberg
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Gang, W. (2011). Technology of Exposing Coal Seam and Passing Rock Cross-Cut in Sever Outburst Coal Seam. In: Wu, Y. (eds) Advances in Computer, Communication, Control and Automation. Lecture Notes in Electrical Engineering, vol 121. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-25541-0_62
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DOI: https://doi.org/10.1007/978-3-642-25541-0_62
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-25540-3
Online ISBN: 978-3-642-25541-0
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