天堂国产午夜亚洲专区-少妇人妻综合久久蜜臀-国产成人户外露出视频在线-国产91传媒一区二区三区

當(dāng)前位置:主頁(yè) > 管理論文 > 工程管理論文 >

夏冬兩季城郊公路綠化帶的降噪效果差異分析

發(fā)布時(shí)間:2019-06-11 01:13
【摘要】:在夏冬兩季監(jiān)測(cè)柳州市柳長(zhǎng)路綠化帶的噪聲值,分析全喬型、喬灌結(jié)合型、全灌型3種標(biāo)準(zhǔn)配置方式的典型綠化帶降噪效果季節(jié)差異。結(jié)果表明:各類型綠化林帶對(duì)城郊公路的交通噪聲都有一定的降噪效果,能達(dá)到標(biāo)準(zhǔn)要求,但不同配置方式降噪效果不同;從夏冬兩季綠化林帶降噪效果分析,整體上夏季的降噪效果強(qiáng)于冬季,全灌木型夏冬季的降噪效果接近,喬灌結(jié)合型夏冬季降噪值差值為2.24~3.16 d B,全喬木型差異最明顯,夏季降噪量比冬季大3.84 d B;在30 m綠化帶范圍內(nèi),0~10 m處可以得到很穩(wěn)定的降噪量。
[Abstract]:The noise value of the green belt of Liuchang Road in Liuzhou City was monitored in summer and winter, and the seasonal difference of noise reduction effect of the typical green belt among the three standard allocation modes of all-Arbor type, Joe irrigation type and full irrigation type was analyzed. The results show that each type of greening forest belt has a certain noise reduction effect on the traffic noise of suburban roads, which can meet the requirements of the standard, but the noise reduction effect of different configuration methods is different. From the analysis of the noise reduction effect of greening forest belt in summer and winter, the noise reduction effect in summer is stronger than that in winter, and the noise reduction effect in summer and winter is close to that in summer and winter, and the difference of noise reduction value in summer and winter is 2.24 鈮,

本文編號(hào):2496885

資料下載
論文發(fā)表

本文鏈接:http://sikaile.net/guanlilunwen/gongchengguanli/2496885.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權(quán)申明:資料由用戶baf32***提供,本站僅收錄摘要或目錄,作者需要?jiǎng)h除請(qǐng)E-mail郵箱bigeng88@qq.com