重庆市城区人居环境电磁辐射监测分析与评价

《重庆市城区人居环境电磁辐射监测分析与评价》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、重庆医科大学硕士研宄生学位论文intensityaround1lOkVoverheadpowertransmissionline．Results(1)Inthisstudy，electricfieldintensityatthefrequencyof100kHz-3GHzinoutsideareasadjacenttothefiveresidentialbuildingsdidnotexceedthesafetylimitsofnationalenvironmentalhygienestandards．WhereassomepowerdensityvaluesinregionCand

2、Edidexceedthelimits．(2)Themaxilnumvalueofelectricfieldintensityofeachflooratthefrequencyof1MHz-40GHzamongthefourresidentialbuildingsreached17．18V／m，whichwasclosetothepublicexposurelimitsetinRegulationsforElectromagneticRadiationProtection(GB8702．88)，andthedifferenceofelectricfieldintensitybetwe

3、eneachfloorwasnotstatisticallysignificant(P>0．05)；asforthefrequencyfrom5HztolkHz，thedifferenceofelectricintensitybetweendifferentresidentialbuildingsdidnotreachstatisticalsignificance(侈O．05)，whereasthatmeasuredontheroofofthebuildingnearoverheadhigh-voltagepowertransmissionlinewashigherthanthatm

4、easuredontheroofofotherthreebuildings(P<0．005)，andalsohigherthanthevalueoftheotherfloorswithinthesamebuilding(P

5、HzdidnotexceedthelimitsetinHygienicstandardforenvironmentalelectromagneticwave，lOV／m．Atthefrequencyof5Hz～lkHzandlkHz～lOOkHz，whenpeoplewereiIlastandingposition，electricfieldintensitymeasuredwithelectricappliancesturnedonwashigherthanthatmeasuredwithelectricappliancesturnedoff(P

6、quencyfrom5HztolkHz，electricfieldintensitymeasuredwhenpeoplewereinastandingpositionwashigherthanthatinasittingposition，withelectric重庆医科大学硕士研究生学位论文appliancesturnedOilinbothstates(尸

7、—VaryingElectric，Magnetic，andElectromagneticFields(upto300GHz)detenninedbyInternationalCommissiononNon—IonizingRadiationProtection(ICNIRP)．(4)Themaximumvalueofelectricfieldandmagneticfieldintensityatthefrequencyof5Hz-lkHzmeasureda