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height="35" class="right_t">公司新聞</td> </tr> <tr> <td class="con"> <h2 class="news_title">如何減弱和預防及冶理噪音</h2> <div id="avu4wkgzb" class="news_att">發(fā)布時(shí)間：2013/5/24　點(diǎn)擊：4944　字體大?。?span onClick="javascript:fontSize('news_content','12px')">小</span> <span onClick="javascript:fontSize('news_content','14px')">中</span> <span onClick="javascript:fontSize('news_content','16px')">大</span> <span onClick="javascript:history.back();" >返回</span></div> <div id="avu4wkgzb" class="news_content" id="news_content"> <P><FONT face=Verdana>　　現在是一個(gè)科技化的時(shí)代，面對緊張的生活節奏，面對日益嚴重的噪音污染，噪音污染的預防成為了認為越來(lái)越關(guān)注的問(wèn)題，那么怎么樣去預防噪音污染呢？</FONT></P> <P><FONT face=Verdana>　　首先：確定環(huán)境噪聲污染防治對策的一般原則：從聲音的三要素為出發(fā)點(diǎn)控制環(huán)境噪聲的影響；以城市規劃為先，避免產(chǎn)生環(huán)境噪聲污染影響；關(guān)注環(huán)境敏感人群的保護，體現“以人為本”；管理手段和技術(shù)手段相結合控制環(huán)境噪聲污染；針對性、具體性、經(jīng)濟合理、技術(shù)可行原則。</FONT></P> <P><FONT face=Verdana>防治環(huán)境噪聲污染的基本方法：科學(xué)統籌進(jìn)行城鄉建設規劃，明確土地使用功能分區，合理安排城市功能區和建設布局，預防環(huán)境噪聲污染；從聲源上降低噪聲；從傳播途徑上降低噪聲（最常見(jiàn)的防治環(huán)境噪聲污染的手段）；針對保護對象采取降噪措施。</FONT></P> <P><FONT face=Verdana>　　其次對以振動(dòng)、摩擦、撞擊等引發(fā)的機械噪聲，一般采用減振、隔聲措施。一般材料隔聲效果可達15-40dB。</FONT></P> <P><FONT face=Verdana>然后對以空氣柱振動(dòng)引發(fā)的空氣動(dòng)力性噪聲，一般采用安裝消聲器的措施?？蓪?shí)現10-25dB降噪量，若減少通風(fēng)量還可提高設計的消聲效果。</FONT></P> <P><FONT face=Verdana>對某些用電設備產(chǎn)生的電磁噪聲，一般盡量使設備安裝遠離人群，一是保障電磁安全，一是利用距離衰減降低噪聲。</FONT></P> <P><FONT face=Verdana> 還有針對環(huán)境保護目標采取的環(huán)境噪聲污染防治技術(shù)工程措施，主要以隔聲、吸聲為主的屏蔽性措施，使保護目標免受噪聲影響。一般人工設計的聲屏障最多達5-12dB降噪效果。全封閉式的聲屏障降噪效果可達20-30dB。</FONT></P> <P><FONT face=Verdana> 最后工業(yè)噪聲防治：以固定的工業(yè)設備噪聲源為主。在此類(lèi)工程項目報批的環(huán)境影響評價(jià)文件中，應當將選址結果、總圖布置、聲源降噪措施、需建造聲屏障及必要的敏感點(diǎn)建筑物噪聲防治措施等分項給出。</FONT></P> </div> <div style="margin-top:10px;"> 上一條： <a href="News_detail.asp?id=22" title="我公司承接惠州機場(chǎng)噪聲治理項目的設計，環(huán)評中標" >我公司承接惠州機場(chǎng)噪聲治理項目的設計，環(huán)評中標</a></div><div> 下一條： <a 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