深部開采引起的地表沉降反分析研究.pdf

1、重慶大學碩士學位論文深部開采引起的地表沉降反分析研究姓名：包修瑞申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：周小平201004英文摘要IIIABSTRACTWiththerapiddevelopmentofourcountry’seconomicthedemingminingareaofvariousundergroundresourcesisincreasingtheminingrateisaccelerating.Butital

2、soattractsmemescholarssocietyconcernsthatsurfacesubsidencecausedbyminingespeciallyminingbelowthebuildingtherivertherailway.TheminingofundergroundresoucesofNanjingQixiaMountainbelongstothistypicalminingbelowthebuildingthe

3、rivertherailway.UnderthesupptbyNaturalScienseFoundationfTalentedYoungsofChongqingtheSupptingProgramofNewCenturyTalentsbytheMinistryofEducationthestudyonthesurfacesubsidenceproblemofNanjingQixiaMoutaincausedbydeepminingis

4、studiedbyconsideringthecreepofrockfilling.Themainconclusionsaresummarizedasfollows:①Surfacesubsidencemonitingwksestablished.Lawsofsurfacesubsidencewererevealedfromthenumericalresults.Itcanbefoundthatthesurfacesubsidencet

5、endtostability.②Threedimensionalnumericalmodelisestablished.Surfacesubsidencecausedbyminingfillingisobtained.Itisshownfromthenumericalresultsthatsurfacesubsidenceinducedbyminingfillingismuchsmallerthanthemeasureddata.Thi

6、sisbecausethecreepofrockfillingisnotconsidered.③Effectsofthecreepparametersofrockfillingonsurfacesubsidenceisdetermindbythogonaldesignmethod.ItisfoundthattheKelvinviscosity、Maxwellshearmodulus、MaxwellviscosityofQixialime

7、stoneQixiasstonesignificantaffectonthesurfacesubsidence.④BasedonGeicAlgithmsprogramthedisplacementbackanalysisiscarriedonthecreepparametersisobtained.Thecreepparametersobtainedbythedisplacementbackanalysiswiththosefroman

8、alogymethodtheaccuracyoftheGeicAlgithmsprogramwasabove85%.ThisshowsthattheprogrammoftheGeicAlgithmshasagoodoptimizationproperties.⑤Thesurfacesubsidenceabovethetheminingareaispredictedbyusingthecreepparametersafterthecivi