高应力软碎煤岩区废矸置换开采技术及工艺 - 煤炭学报.PDF

摇 第36卷第1期 煤摇 摇 炭摇 摇 学摇 摇 报 Vol.36摇 No.1摇 摇 2011年 1月 JOURNAL OF CHINA COAL SOCIETY Jan.摇 2011摇 摇 摇 文章编号:0253-9993(2011)01-0001-06 高应力软碎煤岩区废矸置换开采技术及工艺 1 2,3 2 2 2 2 何富连 ,康摇 荣 ,李宏彬 ,谢生荣 ,张摇 辉 ,张军辉 (1郾 煤炭资源与安全开采国家重点实验室(中国矿业大学),北京摇 100083;2郾 中国矿业大学(北京) 资源与安全工程学院,北京摇 100083;3郾 中国 煤炭工业协会,北京摇 100713) 摘摇 要:针对褶曲断层区、两侧采空、空间交叉巷道等条件下的煤柱区废矸置换开采难题,运用数值 模拟方法分析锚索桁架的应力场和支护优越性,并确定了合理的支护参数。 依据废矸抛掷机抛掷 出废矸的运动特点,建立废矸抛掷机抛掷的运动力学模型,分析废矸抛掷机运移步距与巷道充填率 之间的耦合关系,确定废矸抛掷机工艺步距。 结合新三煤矿生产条件设计置换开采技术,该研究成 果在新三煤矿成功应用并取得了良好效果。 关键词:置换开采;锚索桁架;抛掷运动力学模型;充填步距 中图分类号:TD823郾7摇 摇 摇 文献标志码:A Mining techniques and technology of waste gangue replacement in soft鄄broken coal鄄rock region under high stress 1 2,3 2 2 2 2 HE Fu鄄lian ,KANG Rong ,LI Hong鄄bin ,XIE Sheng鄄rong ,ZHANG Hui ,ZHANGJun鄄hui (1郾StateKey Laboratory of CoalResources andSafeMining(CUMT),Beijing摇 100083,China;2郾Collegeof Resources Safety Engineering,China University of Mining Technology (Beijing),Beijing摇 100083,China;3郾China National CoalAssociation,Beijing摇 100713,China) Abstract:For the waste gangue replacement mining problems at the pillar region on the condition of fold鄄fault zone, gob area of the both sidesand spatially crosstunnel,numerical simulationwasapplied to analyze stressfield and sup鄄 porting superiority of cabletrussandreasonable supportparametersweredetermined.Accordingtomoving characteris鄄 tics of the waste casted by the machine,the movement mechanical model of the throwing machine casting was estab鄄 lished,coupled relation between machinemigrationstepandfillingratewasanalyzedandfinallythetechnology stepof the machine was determined.The replacement exploitation technology was d