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                                Mechanicalanalysisofrunoffgenerationinsemi - humidarea

                                                                         1
                                                                                       1
                                              1
                                                          1,2
                                  CHENMinjian,DENGWei ,ZHAOYong,WANGYong
                               (1.ChinaInstituteofWaterResourcesandHydropowerResearch,Beijing 100038,China;
                                2.DepartmentofHydraulicEngineering,TsinghuaUniversity,Beijing 100084,China)
                  Abstract:Thispaperstudiedthegenerationandvariationofforcesduringtherainfall - runoffprocessbasedonthe
                  principleofmechanicsandderivedthequantitativerelationshipbetweenrainfall - runoffrelationshipandvadosezone
                  thickness.Onthisbasis,thethicknessofvadosezone,whichmaintainsastablerainfall - runoffrelationshipunder
                  naturalconditions ,isdefinedasthereferencegroundwaterdepthofrunoffgeneration.Itisusedastheoriginal
                  conditiontoexplorethemechanism ofrainfall - runoffrelationshipvariationandthecriticalconditionforthe
                  disappearanceofsurfacerunoff.Finally ,acasestudywasconductedontheNorthChinaPlain.Thestudyresults
                  showthattheairpressureinthevadosezoneisthekeyformechanicalanalysis ,andfurthermulti - disciplinary
                  researchesareneeded.
                  Keywords:forcesinrainfall - runoffprocess;vadosezone;soilairresistance;mechanism ofrunoffgeneration;
                  referencegroundwaterdepthofrunoffgeneration;criticalgroundwaterdepthofthedisappearanceofsurfacerunoff

                                                                                    (责任编辑:韩 昆)

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