环境监测管理与技术
環境鑑測管理與技術
배경감측관리여기술
THE ADMINISTRATION AND TECHNIQUE OF ENVIRONMENTAL MONITORING
2014年
1期
61-65
,共5页
高空电磁辐射%环境影响%电场强度%中波%北京市
高空電磁輻射%環境影響%電場彊度%中波%北京市
고공전자복사%배경영향%전장강도%중파%북경시
High altitude electromagnetic radiation%Environmental impact%Electric field intensity%Medi-um wave%Beijing
选取北京市某代表性高层居民楼顶平台作为高空电磁辐射环境水平监测点进行综合场强和选频监测，评价总体电磁辐射环境水平，并分析监测区域电磁辐射能量的来源。结果表明：该高空监测区域的电磁辐射环境总体水平低于国家规定的公众照射导出限值，但高于地面水平。监测区域主要受30 km 外的中波台影响，其次是9 km 外的中央电视塔。影响最大的是639 kHz频率的中波信号，占100 kHz～300 MHz总场强的95％以上，其次是1．28 MHz频率的中波信号。提出，开展敏感建筑物规划建设时，应考虑中波的传播特性和对环境的影响。
選取北京市某代錶性高層居民樓頂平檯作為高空電磁輻射環境水平鑑測點進行綜閤場彊和選頻鑑測，評價總體電磁輻射環境水平，併分析鑑測區域電磁輻射能量的來源。結果錶明：該高空鑑測區域的電磁輻射環境總體水平低于國傢規定的公衆照射導齣限值，但高于地麵水平。鑑測區域主要受30 km 外的中波檯影響，其次是9 km 外的中央電視塔。影響最大的是639 kHz頻率的中波信號，佔100 kHz～300 MHz總場彊的95％以上，其次是1．28 MHz頻率的中波信號。提齣，開展敏感建築物規劃建設時，應攷慮中波的傳播特性和對環境的影響。
선취북경시모대표성고층거민루정평태작위고공전자복사배경수평감측점진행종합장강화선빈감측，평개총체전자복사배경수평，병분석감측구역전자복사능량적래원。결과표명：해고공감측구역적전자복사배경총체수평저우국가규정적공음조사도출한치，단고우지면수평。감측구역주요수30 km 외적중파태영향，기차시9 km 외적중앙전시탑。영향최대적시639 kHz빈솔적중파신호，점100 kHz～300 MHz총장강적95％이상，기차시1．28 MHz빈솔적중파신호。제출，개전민감건축물규화건설시，응고필중파적전파특성화대배경적영향。
A typical high-rise building in Beijing was chosen as a monitoring area for learning about the e-lectromagnetic radiation level in high-altitude environment.Wide-band and narrow-band monitoring instruments were used so as to estimate the general electromagnetic radiation environment level in monitoring area,and make clear of the sources from which the main electromagnetic energy was released as well.The results show that the general electric field intensity in this high-altitude area is below the reference level for general public limited by national standard,though it is above the ground level.The monitoring area is mainly impacted by Medium-wave Station,which is about 30 km away,and secondarily the Central TV Tower,which is about 9 km away.Medium-wave signals from the frequency of 639 kHz have the biggest influence,taking up over 95% of the total energy in the frequency band of 100 kHz ~300 MHz,and secondarily the medium-wave signals from the frequency of 1 .28 MHz.Some suggestions were also given based on the environmental protection perspective,such as,when sensitive buildings are constructed,the influence scope of medium wave should be taken into consideration be-cause of its transmitting characteristics.
