1) roof falling in face area
端面冒顶
2) roof fall at the end-face
端面冒落
1.
9602 coal face at Zhang Ji Colliery in Xu Zhou Area, reasons of roof fall at the end-face are analyzed, which exists at conventional machine mining face in large dip and mining height coal seam, controlling roof fall measures at the end-face are put forward.
根据徐州矿务局张集煤矿9602工作面发生的端面冒落事故和现场实测数据,分析了大倾角“大采高”煤层高档普采工作面端面冒落的原因,提出了控制端面冒落的措施。
3) leakage risk of top coal
端面漏冒
1.
The law of fracture and instability and leakage risk of top coal in thick coal seam with a stratum of gangue in fully-mechanized mining with top coal caving is obtained aft
本文以涡北煤矿8102工作面的地质条件和生产技术条件为基础,综合运用理论分析、数值模拟和现场实测等方法,对软煤、厚硬顶板、含夹矸厚煤层综放开采围岩运移规律、夹矸层对顶煤冒放的影响及含夹矸层顶煤端面漏冒机理进行了系统研究。
4) face fall
工作面冒顶
5) roof in tip to face area
端面顶板
6) tip section
顶端截面
补充资料:冒顶
①地下开采中,上部矿岩层自然塌落的现象。是由于开采后,原先平衡的矿山压力遭到破坏而造成的。采煤工作中有时有计划地放落上部煤层,也称为“冒顶”。②冒名顶替:哥哥冒顶弟弟应考。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条