Coal Mining and Designing Department, Tiandi Science & Technology Co., Ltd. Yanzhou Coal Mining Company

为完善一次采全厚成套装备技术,提高特厚煤层开采效率,在总结国内外综采装备使用经验基础上,研制出适用于8.2 m工作面的超大采高液压支架,针对支架稳定性、防片帮措施、抗冲击性能、过渡配套方式及所使用材料的焊接性能等关键技术进行了研究,分析了支架失稳角度及销孔配合对支架稳定性的影响,开发了支架三级协动护帮装置,发明了大缸径能量耗散抗冲击立柱,完成了新型拼装式锻造柱窝设计,解决了3.5 m大梯度过渡配套难题,研发了Q890新材料及其焊接工艺,在此基础上,解决了超大采高液压支架大尺度高动压敏感结构稳定性和可靠性难题,实现了液压支架轻量化设计,有效提高了煤炭回采率。

Based on summarizing the experience of using of fully-mechanized mining equipment, powered support in 8. 2 m ultra large mining height working face was researched; stability of powered support, preventive measures of spalling, impact resistance, coordination method and weldability of the new material were studied; in stability angle of powered support and effect of pin-hole on stableility were calculated; the three level coordinated coal wall protector was optimized; large diameter i mpact resistant pillar was developed; assembled forging pillar socket was designed; coordination method in 3.5 m working face was solved; new material Q890 was res earched and whose weld ability was experimented meanwhile; the stableility and relability of ultra large height powered support were solved and the powered support was lighter in the premise of the enough support structural strength, the coal recovery rate was improved.

国家重点基础研究发展计划(973计划)资助项目(2014CB046302)；国家自然科学基金联合基金重点资助项目(U161020003)；