摘要
1986年3月到8月,在北京的规划市区,用噪声自动测量仪器,按每1km^2取一测点的原则,共对353个点的环境噪声进行了24小时的连续测量,得到了各测点每10分钟的L_(eq)值和L_(50)值.在测量的同时进行了社会调查,收集了与声环境有关的资料及其居民对噪声的反应.根据测量和调查所得数据,本文就环境噪声、影响环境噪声的主要因素及居民对噪声反应等问题进行讨论和分析.
A survey on environmental nois was carried out in Beijing from April to Augest, 1986. The data of Leq and L50 for every 10 minutes in a day was obtained. The reactions of residents on noise and informations concerning noise environment were also collected. The results are mainly summarized as follows:
1. Average value of Leq24 and LeqD is 61.5dB and 63.4dB, respectively. LeqN is lower than LeqD by 11dB, and varies in a wider range from 34dS to 70dB.
2. Exposure level of noise for residence in industrial area is higher than that in other areas.
3. Traffic noise from trunk road is the main source of environmental noise and yields strong effect on environment up to 50m from a trunk.
4. The attitudes of inhabitants on noise are becoming more severe as the noise exposure level increase. Reactions of 50% inhabitants on noise are stong while Leq24 exceeded 60dB.
5. Leq is more sensitive to the change of noise level as compared with L50. In our survey in Beijing, Leq is higher than L50 by 5dB.
出处
《声学学报》
EI
CSCD
北大核心
1990年第1期44-52,共9页
Acta Acustica
基金
国家自然科学基金
