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KMID : 0381319820210020021
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Korean Journal of Occupational Health
1982 Volume.21 No. 2 p.21 ~ p.31
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A Study on the Noise and Vibration Around the Subway Railroad
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Abstract
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This study was designed to investigate the effects of the subway railroad noise and vibration on those who are living in the outskirts of Seoul including Seoulites from April 1 through the end of October, 1981.
The 526 residents who live around the subway railroad were interviewed at 13 different areas from Seoul and the suburbs of Seoul. In each area, noise and vibration levels were measured at the distance of 0 meters from the subway railroad.
All the information from the interviews and the physical measurements has been analysed to assess the effects of the subway railroad noise and vibration by inquiring the overall dissatisfaction of those who live in vicinity of subway railroad.
The results were as follows:
1. General characteristics
(1) 69.58％ of the subjects were females and 30.42％ of the subjects were from the 30～39 age group
(2) 29.28％ of the subjects were residents in apartments
(3) 59.89％ of the subjects residences have windows made up of wood
(4) 57.79％ of the subjects have been living in the suveyed areas for less than 3 years
2. Assessment of the subway railroad noise
According to 7 grade assessments from not being at all annoyed as the discrimination of score 0 to being much annoyed as the discrimination of score 6, the average score on the subway railroad noise from which the subjects suffered was estimated as 5.12.
48.10％ of the subjects were annoyed from the subway railroad noise in the early morning and on late night of the day and in regard to the season 52.28％ were annoyed in summer and no difference was found between weekends and weekdays.
For the solution of the subway railroad noise problem, 68.44％ of the subjects requested to the authorities to control noises by installing soundproof equipments and speeding down the subway trains.
69.33％ of the subjects were suffering from the interferences in their television or radio and conversation. The complaints were rapidly increasing for those exposed to the higher than 65 ㏈(A); 86.02％ complaind for those exposed to 70 ㏈(A) and 100％ for those exposed to higher than 85 ㏈(A).
According to the noise level, 30.42％ of the subjects were exposed to the noise level of higher than 70 ㏈(A).
3. Assessment of the subway railroad vibration
According to 5 grade assessments from not being at all affected as the discrimination of score 0 to being very often affected as discrimination of score 4, the average score on the interference in thinking, reading and studying was estimated as the highest score 1.87 and the complaints that things rattle or shake was estimated as 1.65.
45.06％ of the subjects were annoyed in the early morning and on late night of the day and 55.81％ were annoyed in the season of summer and no differerence was found between weekends and weekdays.
4. Only 2.85％ of the subjects presented their complaints to the competent authorities as to the subway railroad noise and vibration, although 63.69％ of the subjects were suffering from the subway railroad noise and vibration.
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