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Application of DEM overlaying technique in surface subsidence identification─a case study in Ruqigou coal mining area of Ningxia,China
作者姓名:CHEN Li-ding(Research Center for Eco-Environmental Sciences  Chinese Academy of Sciences  Beijing  Chin
作者单位:Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China
摘    要:1IntroductionSubsidence,asverticalmovementoftheeallof'USt,occurredinmanypartsoftheworld,Particularlyindenselypopulateddeltalcregions.Withocctirrenceofsurfacesubsidence,alotofdamagehasbeeninduced.Surfacesubsidencecanberesultedfromnabscauses.suchastectonicinchonandsealevelrise,fromman-madeinducedcauses,suchasexcessivewithdrawalofgroundwater,geothennalfluids.oilandgas,orextrachonofcoal,sulphur,goldandothersolidsthroughminingorUndergroundconstrUchon(t'Unnelling),orfromother"dxedcausessuchashydro…

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