摘要
为了获取补连塔煤矿综采一次采全高"两带"高度,在一次采高7. 4m厚煤层的12511工作面布置采后钻孔,采用钻孔钻进过程中冲洗液漏失量和钻孔彩色电视观测相结合的方法,综合探测分析确定了"两带"高度。研究结果表明:该条件下,垮落带高度35. 08m,为采厚的4. 74倍;导水裂缝带高度为105. 96m,为采厚的14. 32倍。实测结果与采用分层开采经验公式计算结果对比差距较大,因此,厚煤层分层开采预计公式不适用于一次采全高"两带"高度计算,该实测研究成果可作为补连塔矿和其他相类似条件下煤矿开采计算导水裂缝带和垮落带高度的依据。
In order to obtain‘two zones’height under full-seam mining with fully mechanized coal mining of Bulianta coal mine,after mining drill hole were layout of 12511 working face with coal seam thickness 7.4m under full-seam mining,‘two zones’height was confirmed by the combination method that flushing fluid leakage and drill hold colour television during drilling process.The results showed that,caving zone height was 35.08m under the situation,about 4.74 times to mining thickness,water flowing fracture zone height was 105.96m,about 14.32 times to mining thickness.Large difference appeared after compared with practical results and calculation with empirical formula,so,forecast formula of slicing under thickness coal seam was not suited for‘two zones’calculation under full-seam mining,it references for similar situation.
作者
杨俊哲
贾林刚
宋桂军
赵立钦
YANG Jun-zhe;JIA Lin-gang;SONG Gui-jun;ZHAO Li-qin(Shenhua Shendong Coal Group Co.,Ltd.,Shenmu 719315,China;Safety Institute,China Coal Research Institute Co.,Ltd.,Beijing 100013, China;State Key Laboratory of Coal Resource High Effective Mining&Clean Utilization(China Coal Research Institute),Beijing 100013,China)
出处
《煤矿开采》
北大核心
2018年第5期73-76,共4页
Coal Mining Technology
基金
国家重点研发计划:深部矿井煤岩动力灾害防治技术集成及工程示范(2017YFC0804209)
关键词
厚煤层
综采大采高
“两带”高度
冲洗液漏失量
彩色钻孔电视
thickness coal seam
fully mechanized coal mining with large mining height
‘two zones’height
flushing fluid leakage
drill hole colour television
