基于AHP法的采空区底板破坏范围最大影响因素辨识与分析*宫立昊1,李福程2(1.山东科技大学能源与矿业工程学院,山东青岛266590;2.华能灵台邵寨煤业有限责任公司,甘肃平凉744400)摘要:为了更加准确探究一般情况下采空区底板破坏范围最大影响因素,以邵寨煤矿2201工作面为背景,采用层次分析(AHP)和数值模拟的研究方法对采空区底板破坏范围最大影响因素进行辨识与分析。首先基于滑移线场理论及底板屈服破坏深度公式分析采空区底板破坏特征,初步判断底板破坏范围主控因素;其次基于AHP法建立采空区底板破坏范围层次综合评价模型,通过定性指标模糊量化方法计算采空区底板破坏范围主控因素权重并做重要度排序比较,辨识确定出煤层采高对底板破坏范围影响最大;最后利用FLAC3D数值模拟来验证采高对该矿采空区下底板破坏范围影响程度的显著性,通过设计不同采高下工作面回采的模拟方案来分析采空区底板应力分布及位移变化情况。关键词:AHP法;采空区;底板破坏范围;最大影响因素;数值模拟中图分类号:TD323;TD325文献标志码:A文章编号:1008-8725(2023)03-014-08IdentificationandAnalysisofLargestInfluencingFactorsofFailureRangeofGoafFloorBasedonAHPMethodGONGLihao1,LIFucheng2(1.CollegeofEnergyandMiningEngineering,ShandongUniversityofScienceandTechnology,Qingdao266590,China;2.HuanengLingtaiShaozhaiCoalIndustryCompanyLimited,Pingliang744400,China)Abstract:Inordertomoreaccuratelyexplorethelargestinfluencingfactorsofthebottomplatefailurerangeofthegoafundernormalcircumstances,takingthe2201workingfaceofShaozhaicoalmineasthebackground,theresearchmethodsofanalytichierarchyprocess(AHP)andnumericalsimulationwereusedtoidentifyandanalyzethelargestinfluencingfactorsofthebottomplatefailurerangeofthegoafarea.Firstly,basedonthesliplinefieldtheoryandthebottomplateyieldfailuredepthformula,thefailurecharacteristicsofthegoafbottomplateareanalyzed,andthemaincontrolfactorsofthebottomplatefailurerangearepreliminarilydetermined;secondly,acomprehensiveevaluationmodelofthefailurerangeofthegoafbottomplateisestablishedbasedontheAHPmethod,andtheweightofthemaincontrolfactorsofthefailurerangeofthegoafbottomplateiscalculatedbyqualitativeindexfuzzyquantificationmetho...