白家庄采煤沉陷预测及治理研究 毕业论文

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1、白家庄矿采煤沉陷预测及治理研究摘要随着煤炭资源的开采，越来越多的土地因为采空区塌陷而遭到破坏，威胁到地表人群的生产生活安全，也对生态环境造成很大破环。因此有必要对采煤沉陷区进行预测、防治研究。本文以白家庄矿36703工作面上方的地表为研究对象，根据工作面上方顶板的地质采矿条件，分别采用概率积分法和三维快速拉格朗日有限差分法（FLAC3D数值模拟），对受开采影响的地表移动和变形进行静态和动态预测。获得了地表的下沉值、下沉范围。预测结果表明，在地表移动和变形预测方面，概率积分法和FLAC3D数值模拟都是可行的。作为一种三维显式有限差分法的数值分析工具，

2、FLAC3D在采煤沉陷模拟预测方面具有广阔的应用前景，其直观、动态的分析将丰富采煤沉陷移动与变形的研究。本文最后根据概率积分法和FLAC3D数值模拟的预测结果，结合矿区的实际，提出了土地复垦和生态重建的治理方法。对于沉陷治理工作，提出了要从源头防治的措施，应采用更合理的采煤方式防止沉陷发生。关键词：预测；概率积分法；FLAC3D数值模拟；地表移动和变形；土地复垦62AstudyofminingsubsidencepredictionandmanagementonBajiazhuangcoalAbstractWiththeexploitationof

3、coalresources,anincreasingnumberoflandduetosubsidenceofmined-outareawasdestroied.Thesubsidenceseriouslythreatstothegroundproductiveandlifesafetyofpeople,butalsodestroiedecologicalenvironment.Therefore,itisnecessaryforminingsubsidencetoresearchpredictionandcontrolling.Thispaper

4、takesgroundabove36073workingfaceofbaijiazhuangcoalasanexample.Accordingtothegeologicalandminingconditionsof36703workingface,itstaticanddynamicpredictsthedisplacementanddeformationofsurfacewiththeprobability-integralmethodandFastLagrangianAnalysisofContinuain3Dimensions(numeric

5、alsimulationwithFLAC3D)respectively.Resultsofpredictionpointedoutthevalueofthegroundsubsidence,thesubsidencearea.Itshowsthattheprobability-integralmethodandnumericalsimulationwithFLAC3Darefeasibleonpredictingdisplacementanddeformationoftheground.But,asathree-dimensionalexplici

6、tfinite-differenceanalysistool,theapplicationinsimulationandpredictionminingsubsidencehasbroadapplicationprospect.Itsvisualizedanddynamicanalysiswillberichinthestudywhichpredictsthedisplacementanddeformationofminingunderground.Finally,accordingtothepredictedresultsoftheprobabi

7、lity-integralmethodandnumericalsimulationwithFLAC3D,thetreatmentofthelandreclamationandecologicalreconstructionwasused.Forcontrollingworkofsubsidence,thebetterwaystopreventthesubsidenceoccurredincoalminingisusingreasonableminingmethodstopreventsubsidencefromsource.Keywords:Pre

8、diction;Probability-integralmethod;NumericalsimulationwithFLA