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1、评价。论述了村民住宅开裂成因分析及其与矿井掘进采矿的关系，主要从房屋住宅开裂成因分析、采空区引起地面移动变形影响范围与村民房屋开裂关系分析、煤矿采掘爆破振动影响范围的分析、地下采煤疏排地下水形成降落漏斗影响范围关系分析、建筑物受开采影响的损坏等级划分等共五方面进行分析。根据上述的多方面，收集证据，进行理论计算分析与评价，论述了大转湾煤矿地下开采对地面塌陷、房屋破坏的影响范围进行。关键词：地下开采；放炮震动；水源流失；地面塌陷；房屋开裂ii万方数据ABSTRACTBasedontheproject“thescopeofgroundsubsidenceinfluencedbyunder
2、groundmining”ofDazhuanwancoalminelocatedinDafangcounty,analyzedtherelationshipbetweentheslopecracksandcrackingsaffectedbyDazhuanwanoldcoalmineminingactivities;Usinggeophysicalprospectinghigh-densityelectricalprospectingtestbyguizhougeologicalengineeringsurveyanddesigninstitutetogetthedataofgoa
3、fcausedbyminingactivities,throughundergroundinvestigationandgeophysicaltest,analysisonthereasonofhousecrackinimpactedareaandputforwardreliablereport.Combinedwithmeasurementandinvestigation,wegetaconclusionthatthemainreasonofsubsidencewascausedbyunreasonablelayoutofundergroundmining.Duetothecoa
4、lseamburiedshallow,coalseamroofwithoutkeyhardlayerandblastingvibrationalsoaffectedthesubsidence.Thispaperdependonthepresentsituationofgeologicalhazard,surveyedhousecracks,mineengineeringgeologicalsurveying,miningsituationandgeophysicaltest,calculatedandevaluatedontherelationshipofDazhuanwancoa
5、lminingactivitiesandgroundbuildings,analysisontherelationshipofhousecrackandminingactivities,discussedthescopeofgroundsubsidenceinfluencedbyundergroundminingofDafangcounty,Dazhuanwancoalmine.Throughon-the-spotenvironmentgeologysurvey,miningareaslocateinslopeandgentleslopezone,thenaturalenviron
6、mentdestroyedseriouslybyhumanactivities,mountainoccurredcracksandothergeologicaldisastersinDazhuanwancoalminecausedbyminingactivities.Therearethreecracksandsevenoldcoalmineonlandininvestigationarea.Throughontheinvestigationon110villagershousecracks,mostofthemarebrickhouse,stonehouseandwoodhous
7、e,foundthatthereextentdifferentcrackingphenomenaonbrickhouse,stonehouseandwoodhouse.Throughongeophysicalprospectinghigh-densityelectricalprospectingtest,collectedthedatafromMarch23,2014toJuly10,iii万方数据calculatedandevaluatedontherelation
