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jin shu wang xia tui kua xing mao ding shi gu de fen xi ji fang zhi cuo shi
Pages: 2-5+12+64
Year: Issue:  10
Journal: Coal Science and Technology

Keyword:  推垮型冒顶事故上分层金属网冒落高度顶板下沉分层工作面初次放顶顶板冒落控顶距预防措施;
Abstract: <正> 对上分层冒落状况的分析及预防措施对于上分层的冒落状况要认真的观测和分析,以便进行预防性处理。如果上分层有效的采用全部陷落法管理顶板,那么总的冒落状况应符合下式
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