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《中国环境管理干部学院学报》2017,(2)
以秦皇岛市2011—2015年的噪声监测资料为依据,对"十二五"期间秦皇岛市声环境质量现状、变化趋势进行分析。分析结果表明:"十二五"期间秦皇岛市区域声环境和道路交通声环境质量为较好,功能区声环境昼夜全部达标;影响秦皇岛市环境噪声源主要为社会生活噪声、交通噪声等。提出了合理城区布局、使用新型隔声材料、加大宣传教育、严格环境执法等噪声污染防治对策。 相似文献
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以北戴河2018年声环境监测数据为依据,对北戴河旅游旺季(7月—8月)声环境质量状况进行了分析。结果表明:2018年北戴河旅游旺季声环境昼间等效声级符合声环境2类功能区标准比例为36.8%,夜间等效声级符合声环境2类功能区标准比例(27.1%),较2017年有所提高。7月中旬到8月中旬等效声级明显出现波峰。影响声环境质量的主要因素有社会生活噪声、交通噪声和自然环境噪声等。应通过加强城市交通噪声控制、强化社会生活噪声管理力度、完善机制、加强宣传教育、加强公众参与等防治措施改善声环境质量。 相似文献
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乌鲁木齐声环境功能区可分为四类,通过对这些有代表性的噪声监测点进行长期定点监测,了解各类功能区声环境质量特征及受污染情况。通过对近3 a四类声环境功能区的噪声昼间、夜间连续等效声级及污染情况的统计分析,掌握乌鲁木齐市噪声污染状况,研究治理对策。 相似文献
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为了综合评价全省城市声环境质量状况,进一步探讨城市声环境存在的问题,并提出相应的对策建议,为环境保护管理部门制定噪声污染防治决策提供一定的依据,以“十三五”期间四川省21个市(州)政府所在地的监测数据为基础,参照《声环境质量标准》(GB 3096-2008)以及《环境噪声监测技术规范城市声环境常规监测》(HJ 640-2012)的评价方法,综合评价分析了城市区域、道路交通及功能区声环境质量状况及变化趋势。结果表明,四川省城市区域、道路交通声环境质量基本保持稳定,功能区声环境质量趋于好转,交通噪声对声环境质量的影响逐渐突出。建议环境管理部门联合城市其他部门同时做好点位规划、加强执法力度,加强噪声源头管理工作,取得噪声污染防治的实效。 相似文献
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以每个功能区面积占城市区域总面积的比例作为权系数,然后用加权平均法求出的城市区域环境噪声标准值来衡量整个域区的噪声水平,这样,在城市环境综合整治定量考核工作中对声环境状况评价真正做到定量化、标准化、针对城市的性质,规模,特征不同,也体现可比性。 相似文献
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以中原城市群强市-新乡市为例,介绍城市环境噪声的声源构成主要以工业噪声和社会生活噪声为主。随着城镇化规模的扩大,近年来的噪声监测值总体呈下降趋势,但道路交通噪声和社会生活噪声有增高趋势。结合声环境质量现状,提出了合理规划功能区布局、加强声环境管理、利用城市绿地降低噪声、提高单体建筑规划设计水平等改善对策措施。 相似文献
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Arline L. Bronzaft 《Journal of environmental psychology》1981,1(3):215-222
A school was selected for the testing of the effects of resilient rubber pads as noise control devices on a nearby elevated rail track. In addition three school classrooms received acoustical treatment to the ceilings. Teachers and students reported a quieter atmosphere after installation of the pads. Reading scores in the year prior to installation were lower on the noisy side of the building, but after installation of the rubber pads and the noise-absorbing ceilings there were no differences in reading achievement between children on the noisy side and those on the quiet side. Possible explanations of these findings and implications for social policy decisions are discussed. 相似文献
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Manoutchehr Heidari Kamran Ghiassi Edward Mehnert 《Journal of the American Water Resources Association》1999,35(2):333-347
ABSTRACT: The nonlinear least squares (NLS) method was applied to pumping and recovery aquifer test data in confined and unconfined aquifers with finite diameter and partially penetrating pumping wells, and with partially penetrating piezometers or observation wells. It was demonstrated that noiseless and moderately noisy drawdown data from observation points located less than two saturated thicknesses of the aquifer from the pumping well produced an exact or acceptable set of parameters when the diameter of the pumping well was included in the analysis. The accuracy of the estimated parameters, particularly that of specific storage, decreased with increases in the noise level in the observed drawdown data. With consideration of the well radii, the noiseless drawdown data from the pumping well in an unconfined aquifer produced good estimates of horizontal and vertical hydraulic conductivities and specific yield, but the estimated specific storage was unacceptable. When noisy data from the pumping well were used, an acceptable set of parameters was not obtained. Further experiments with noisy drawdown data in an unconfined aquifer revealed that when the well diameter was included in the analysis, hydraulic conductivity, specific yield and vertical hydraulic conductivity may be estimated rather effectively from piezometers located over a range of distances from the pumping well. Estimation of specific storage became less reliable for piezometers located at distances greater than the initial saturated thickness of the aquifer. Application of the NLS to field pumping and recovery data from a confined aquifer showed that the estimated parameters from the two tests were in good agreement only when the well diameter was included in the analysis. Without consideration of well radii, the estimated values of hydraulic conductivity from the pumping and recovery tests were off by a factor of four. 相似文献
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The effects of environmental overload and noise on helping behavior is assessed through a 2 × 3 experimental design including two levels of environmental overload and three conditions on each site: without roadworks, roadworks without noise, and noisy roadworks.Results are analysed in terms of the cognitive appraisal of the situation and the narrowing of attention. The subject's behavior when confronted with explicit and implicit helping requests shows that noise appears to be the most important component of overload, affecting both the subjects' attentiveness in implicit helping demands, as well as the refusal to engage in verbal interaction. 相似文献
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针对城市电厂变压器的噪声污染,以北京太阳宫燃气热电冷联供工程中应用的变压器噪声控制为例,通过分析研究变压器声源不同的频谱特性,并根据厂界噪声控制目标计算声源的超标贡献量和设计降噪量,开发设计了变压器降噪隔吸声屏障,针对变压器的低频噪声,设计特殊的隔吸声结构,并成功应用于工程实践,取得了理想效果。 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