开滦矿区复杂煤层综合机械化放顶煤开采技术

The fully mechanized top coal caving mining technology in complicated seam of Kailuan mining area

回顾了开滦(集团)有限责任公司复杂煤层综合机械化放顶煤开采的发展历程。介绍了放顶煤开采的3种类型,即一次采全厚放顶煤开采、预采顶分层网下放顶煤开采以及倾斜分段分层放顶煤开采。从中位放顶煤和低位放顶煤开采等方面分析了开滦集团公司在放顶煤开采技术上的探索、改革与发展过程以及在各个阶段所取得的成果,并着重阐述了特厚煤层低位放顶煤、厚煤层轻型支架放顶煤、急倾斜厚煤层微型支架放顶煤和大倾角特厚煤层放顶煤等低位放顶煤开采技术的结构与技术特征。最后介绍了开滦集团公司在生产过程中所积累的放顶煤开采工艺参数的选择以及放顶煤安全开采的影响因素等方面的研究成果。

Reviewed on the development course of fully mechanized top coal caving mining in complicated seam of Kailuan mining area.Introduced three types of the top coal caving mining methods,including the one passing full seam mining with top coal caving,the top slicing pre-mining and the top coal caving mining under the artificial steel mesh roof,and the sectional slicing top coal caving mining in the inclined seam.From the top coal middle level caving mining and the top coal low level caving mining,analyzed the discovery,reform and development processes of the top coal caving mining technology as well as the achievements obtained from each stage in Kailuan（Group）Corporation.Stressed the induction on the top coal low level caving mining in ultra thick seam,the top coal caving in thick seam with light weight powered supports,the top coal caving mining in the deep inclined thick seam with the mini type powered supports and the top coal caving mining in high inclined ultra thick seam as well as the structure and features of the top coal low level caving mining technology.Finally,introduced the selection of the top coal caving mining technique parameter accumulated in the coal production processes,the factors influenced to the safety top coal caving mining and the other study achievements.