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Coal Winning Method of Meeting Composit Roof when Mining Roof Isolated Island
Author(s): 
Pages: 28,43
Year: Issue:  3
Journal: COAL

Keyword:  孤岛面复合顶板仰采方法;
Abstract: 介绍五阳煤矿7508上分层孤岛工作面仰采推进遭遇复合顶板时,在煤墙上部煤体片帮量超大超宽、易漏顶的情况下,采取了人工超前在煤墙挖柱窝打替柱控顶,然后机组只割底刀煤通行的回采方法.
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