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北京城市声环境自动监测系统监测点位布设方法初探 总被引:2,自引:0,他引:2
噪声自动监测相对手工监测而言,更能真实反映城市声环境质量,随着噪声自动监测技术的不断完善,自动监测替代手工监测已成为必然趋势.但目前我国城市声环境自动监测系统正处于起步阶段,国内还没有对声环境自动监测系统的点位布设提出成熟、合理的方案.文章结合北京市声环境自动监测系统建设的实际工作情况,对监测系统总体框架、自动监测点位布设的原则及方法等进行了阐述并提出近期需要解决的问题. 相似文献
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南京市地铁噪声影响调查 总被引:2,自引:1,他引:1
为了解城市地铁在正常营运时噪声对外部环境的影响,对南京地铁1号线高架段、车厢内和站台上环境声进行了调查.结果表明,地铁高架段噪声对外环境的影响达到4类区标准,其对声环境的影响明显小于快速道路高架段;车厢内和站台上的噪声对乘客的影响不容忽视.指出,地铁高架两侧100 m范围内有敏感点的路段应全部设置隔声屏障,地铁运营部门应提高地铁驾驶人员的技术和责任心. 相似文献
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声暴露级是用于评价单一噪声事件引起的烦恼度,来表示人们在一定的噪声环境下工作,也就是暴露在噪声环境下时,噪声对人的影响与噪声强度和噪声暴露时间的关系。《环境监测技术规范(噪声部分)》中规定:“声暴露级L_(AX)定义如下: 相似文献
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相对手工监测而言,噪声自动监测更能真实反映城市声环境质量,随着自动监测技术的不断完善,环境噪声自动监测替代手工监测已成为必然趋势.重点介绍了常州市城市噪声自动监测系统,并对运行状况、存在问题及发展方法进行分析探讨. 相似文献
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道路交通噪声对城市环境质量的影响 总被引:2,自引:0,他引:2
苗晓岷 《甘肃环境研究与监测》1997,10(4):21-23
指出在城市环境噪声中,声级最强、干扰最大且较难解决的交通噪声对城市声环境质量的早影响,并提出了在防治措施中,禁鸣是管理好交通秩序,防治噪声污染最经济、效果较好的一条措施。 相似文献
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阐述了禁鸣喇叭的效果,认为禁鸣措施已取得了一定的环境效益与环境经济,并具有示范作用和推广应用价值.对禁鸣以后交通噪声降幅的限制因素和交通防噪等问题进行了探究. 相似文献
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The objective of this study is to develop an empirical traffic noise prediction model under interrupted traffic flow conditions
using two analytical the approaches, the first being the acceleration lane approach and second being the deceleration approach.
The urban road network of Bangalore city has been selected as the study area. Sixteen locations are chosen in major traffic
junctions of the study area. The traffic noise data collected from the study locations were analyzed separately for both acceleration
and deceleration lanes when vehicles leave an intersection on a green traffic light and come to a stop on red traffic light.
Based on the study, a regression noise prediction model has been developed for both acceleration and deceleration lanes. 相似文献
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开封市交通噪声环境质量二级模糊综合评价 总被引:1,自引:1,他引:0
在开封市2005年交通噪声实地监测数据的基础上,运用二级模糊综合评价法,对市区交通噪声环境质量进行现状评价,评价结果为开封市交通噪声环境质量总体上昼间属于轻污染,夜间属于重度污染,夜间交通噪声环境质量明显劣于昼间。其结论符合开封市的实际情况,不仅能较好地描述开封市交通噪声环境污染的连续、渐变、模糊的特点,而且还弥补了一级模糊综合评价难以反映出小范围路段对整体环境质量贡献的不足。 相似文献
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On the basis of the continuous traffic noise data observed at 142 sites distributed in 52 roads from 1989 to 2003, the characteristics of traffic noise and effect factors were analyzed through traffic noise indices, such as Lep, L10, L50, L90, TNI, and Pn. Our findings allow us to reach a number of conclusions as follows: Firstly, traffic noise pollution was serious, and its fluctuant characteristic was obvious, resulting in a great intrusion to public in Lanzhou City during last 15 years. Secondly, traffic noise made a distinction between trunk lines and secondary lines, west-east direction roads and north-south direction roads. Thirdly, spatial character and time rule of traffic noise were obvious. In addition, traffic volume, traffic composition, road condition, and traffic management were identified as the key factors influencing traffic noise in this city. 相似文献
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以城市总体规划为指导,对南京市声环境功能区划进行调整。根据相关技术规范,按照宜粗不宜细的原则,对城市和乡村功能区分别进行划分;明确了4类声功能区的距离范围,更加符合噪声传播特性;针对噪声污染特点,对于相关规范未涵盖的内容作了补充规定,使声环境管理更具针对性。区划结果表明,主城区1类区和3类区比例有所减小,2类区比例有所增加,全市范围内1类区比例仍为最高。 相似文献