摘要
实践表明,坚硬特厚煤层综放工作面的支架载荷及其波动较大,周期来压明显且存在大压、小压现象,来大压时有时还非常剧烈。这与一般的松软或中硬特厚煤层综放工作面有着明显的差别。文中对此进行了系统总结。分析认为,坚硬煤层综放工作面存在剧烈矿压显现的根本原因是顶煤传递顶板压力的能力较强,以及顶板存在的大、小结构的特征。
It is showed in practice that the load born on powered supports and its fluctuation is large, the periodical weighting is obvious and has the large and small pressure phenomena, and sometimes the behavior of the large pressure is very violent in hard thick seam fully mechanized caving faces. These are obviously different from those of the commonly soft or medium-hard seam fully mechanized caving feces. In this paper, all above these are systematically summarized, and it is thought by analysing that the basic course existing the violent ground behavior in hard thic seam fully mechanized caving faces is that the capability for the top-coal to transfer the roof strata pressure is stronger, and the big and small structures in the roof strata exist.
关键词
坚硬煤层
综采放顶煤
矿压显现
支架围岩系统
hard seam
fully mechanized caving
ground behavior
support and surrounding-rock system
