国内外道路声屏障的研究与发展(5)

　2005年　第6期　　　　　　　　段金明　周敬宣:国外道路声屏障结构形式的研究进展

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ForeignResearchDevelopmentofConfigurations

ofRoadNoiseBarriers

DUANJin-ming,ZHOUJin-xuan

(CollegeofEnvironmentSci.&Eng.,HUST,Wuhan,430074)

Abstract:Theresearchofconfigurationsofroadnoisebarriersisahottopicthatmanyforeignscholarshavebeenstudying.However,theminorityofournationalscholarshaveengagedinthetheorystudyofnoisebarriers.Inthepaper,thebasicprincipletoreducenoises,performancecharacteristicsanddevelopingtrendofdifferentnovelnoise-barriersaregenerallyintroduced.Inaddition,thesenoisebarriersinducing-noiseperformancesarecompared.

Keywords:noisebarrier;configuration;disposeofsoundabsorption;softface

塔里木沙漠公路防护林生态工程完工

近日,由交通等部门共同建设的塔里木沙漠公路防护林生态工程全面完工,一条世界上最长的穿越流动沙漠的绿色走廊在塔克拉玛干沙漠出现。公路两侧,是由沙拐枣、梭梭等沙漠植物构成的436km长的绿色走廊。

塔里木沙漠公路是世界上首条在流动性沙漠中修建的等级公路,全长逾500km,其中沙漠路段长446km。该公路防护林生态工程于2003年8月动工,总投资两亿多元。公路两侧的绿化带宽约72～78m,种有柽柳、梭梭、沙拐枣等优良防风固沙灌木。防护林生态工程全线采用管道供水技术,就地采水、分散供水、滴水灌溉,同时解决了种植及苗木成活等一系列关键技术难题。

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