浅埋煤层“主控层-软弱层”组合结构的形成机理及应用  

Formation mechanism and application of“main control Layer-weak layer”composite structure in shallow coal seam

作　　者：宋桂军[1,2,3] 张彬[4,5] 付兴玉 杜锋 毕忠伟[4,5] 王寅 杨永亮[2] SONG Guijun;ZHANG Bin;FU Xingyu;DU Feng;BI Zhongwei;WANG Yin;YANG Yongliang(School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo,Henan 454000,China;Shendong Coal Group Co Ltd,Shenmu,Shaanxi 719300,China;Shaanxi Coal and Chemical Technology Institute Co Ltd,Xi’an,Shaanxi 710000,China;China Coal Research Institute,Beijing 100013,China;State Key Laboratory of Coal Mining and Clean Utilization(China Coal Research Institute),Beijing 100013,China;School of Energy and Mining Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China)

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]神东煤炭集团有限责任公司,陕西神木719300 [3]陕西煤业化工技术研究院有限责任公司,陕西西安710000 [4]煤炭科学技术研究院有限公司,北京100013 [5]煤炭资源高效开采与洁净利用国家重点实验室(煤炭科学研究总院),北京100013 [6]中国矿业大学(北京)能源与矿业学院,北京100083

出　　处：《采矿与安全工程学报》2021年第2期286-294,共9页Journal of Mining & Safety Engineering

基　　金：天地科技股份有限公司科技创新创业资金专项项目(2019-TD-QN018);国家自然科学基金项目(51674143);国家重点研发计划项目(2017YFC0804205)。

摘　　要：通过分析组合承载结构的形成条件、冲击载荷作用下组合承载结构破坏情况判定方法,对浅埋煤层覆岩主控岩层及其所控软弱岩层协调运动过程进行了深入研究。结果表明:在一定的条件下,主控岩层及其所控软弱岩层断裂岩块将形成协同承载的“主控层-软弱层”组合结构,上覆冲击载荷将影响“主控层-软弱层”组合结构的稳定性;基于此,提出了神东矿区浅埋采空区下回采时煤层间3种结构形态,基于“主控层-软弱层”组合结构定量化地分析了煤层群开采期间层间结构的破坏过程。Based on the analysis of the formation condition of composite bearing structure,and the method discriminating the damage of the composite bearing structure under the impact load,the coordinated motion of composite bearing structure formed by the key stratum and upper soft rock controlled in shallow buried coal seam were studied intensively.The results have shown that,under given conditions,the main control layer and the fault block of the weak layer controlled by it form“main control layer-weak layer”composite structure that bears the load cooperatively,and the overlying impact load would affect the stability of this structure.Based on this,three models of structures formed by stratas between two seams have been proposed while mining under the goaf in shallow coal seam of Shendong mining area.Based on the“main control layer-weak layer”composite structure,the failure process of interlayer structure during the mining of coal seam group has been quantitatively analyzed.

关 键 词：浅埋煤层 “主控层-软弱层”组合结构 冲击载荷 结构稳定性 动载矿压机制 

分 类 号：TD325[矿业工程—矿井建设]