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通过对油田集油站泵房噪声污染现状及来源分析,提出噪声治理方案。经过噪声治理,集油站电机噪声平均降低至84dB(A),值班室噪声降低至58dB(A),达到GBJ 87-85《工业企业噪声控制设计规范》中的要求,治理后的降噪效果明显。 相似文献
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通过分析城市十字路口噪声源的特点,采用Cadna/A噪声模拟软件建立十字路口交通预测模型,对十字路口周边声场分布情况进行了模拟研究,研究发现在选定的十字路口,交通噪声对周边环境影响较大,面向道路一侧昼间最大噪声值为72.9dB(A),夜间最大噪声值为64.5dB(A),背向道路一侧昼间最大噪声值为65.4dB(A),夜间最大噪声值为57.2 dB(A),本次研究的成果对于交通规划、噪声评价都具有十分重要的现实意义。 相似文献
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为了降低高压注水泵房的噪声及减少对岗位员工的危害,辽河油田公司对茨榆坨采油厂茨三注水站高压注水泵房噪声特点及其对岗位员工的危害进行了分析,并利用吸声、隔声和隔振技术对茨三注水站高压注水泵房噪声进行了治理。治理后高压注水泵房噪声由原来的88~99dB(1台注水泵运转)下降到73~81.5dB。泵房的休息室、值班室噪声由原来的60~75dB下降到42~48dB。达到了《工业企业设计卫生标准》(GBZ1-2002)的要求。 相似文献
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简要分析了四川页岩气勘探钻井现状,监测了单、双平台钻井作业和压裂作业边界噪声。监测结果表明:压裂作业边界昼间噪声平均值高于单、双平台钻井作业平均值约10 dB(A),噪声测量值的最低值和最高值相应高出4~6 dB(A),昼间噪声超标率高于钻井作业,说明压裂作业噪声对周边的影响远超过钻井作业;相对于单平台,双平台发声设备多,造成声叠加影响严重,高发声设备在同一方位声叠加更显著。通过噪声值对比,提出页岩气勘探钻井过程可考虑选取噪声更小的气代油或电代油动力设备、建立隔音设备、根据地形与噪声传播规律调整声源设备摆放位置等降噪措施。 相似文献
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唐钢二炼铁厂煤粉车间制粉工段新上中速磨制粉工艺,其主排风机低频噪声污染十分严重,现场测试噪声值为98dB(A).治理后现场测试噪声值降至76dB(A),办公楼区域门窗玻璃低频振动消失。 相似文献
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1 概况 采暖锅炉引风机噪音是目前城市噪声源之一.该噪音的特点是进入采暖期以后每日24小时分3至4段时间供热,严重影响附近居民的休息.通化市某银行现有10吨采暖锅炉,配Y5-47 NO 10C引风机,锅炉烟囱为直径0.9m,高24m,铁制.该烟囱高出附近居民楼5m,锅炉房界外1m处环境夜间本底值39dB(A),噪声值63.5dB(A) ,超出我国城市环境噪声允许标准二类混合区的限值18.5dB(A) . 相似文献
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Noise is an important pollutant of environment causing various health hazards. In the present study, ambient noise levels were measured in two different areas within Jaisalmer city viz., commercial and residential area, on festive day and non-festive day (after) of Diwali. The results of noise level monitoring revealed the fact that due to higher amount of firecrackers on Diwali festival noise level was enhanced. The average equivalent noise level was increased from 61.94?dB to 72?dB (A) and 64.68?dB to 73.74?dB (A) on festive day, respectively, in selected residential and commercial areas, where noise was 30 and 13.44?% higher than standards of Central Pollution Control Board, New Delhi for residential and commercial areas, respectively. 相似文献
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通过天然气压缩机降噪治理,使增压站场厂界噪声达到GB 12348-2008《工业企业厂界环境噪声排放标准》2、3类功能区排放限值,减少噪声污染,是一项重要的环保工作。文章分析了噪声测量方法、天然气压缩机噪声产生机理、压缩机原始噪声测试、降噪工艺技术为:合理选择消声器,合理选定压缩机安装位置等。该工艺在降噪过程中没有涉及压缩机的机体改造,从而不会因降噪而影响机组各种设备的使用性能;机组的操作、检修、观察及机械声音判断等要求没有受到影响。 相似文献
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M. Pierrette C. Marquis-Favre J. Morel L. Rioux M. Vallet S. Viollon A. Moch 《Journal of environmental psychology》2012
The literature on noise annoyance emphasizes that acoustical factors cannot totally explain the annoyance felt by a population exposed to community noises, and that some non-acoustical factors have an effect on annoyance. This research paper deals with the annoyance caused by combined noises coming from road traffic and an industrial site. This type of combination has been very little studied to date. An in situ study was conducted in an area of a French town exposed to these two noise sources. To investigate the annoyance caused by these combined noises, the work involved both a mapping of the industrial and road traffic noises present in the survey area and a questionnaire designed to evaluate the noise annoyance experienced by residents and to identify the factors that probably influence noise annoyance. The results highlight the link between the noise levels measured and the annoyance felt by the respondents. They also show that certain non-acoustical factors have an impact on annoyance felt. Indeed, the results highlight a positive correlation between fear of industrial sites and the annoyance expressed. They also show correlations between some items to evaluate noise sensitivity and the annoyance expressed. No significant correlation has been found between annoyance and the other non-acoustical factors such as age, sex and length of residence. Finally, several total annoyance models were tested for this noise combination. Two of them, namely the strongest component model and a proposed perceptual version of the mixed model, were able to better predict total annoyance than the other tested models. 相似文献