Mohalik, N.K. (2003) Development of a noise model with respect to sound propagation and its application to a mining complex. Noise & Vibration Worldwide , 34 (2). pp. 8-16. ISSN 0957-4565

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A noise source radiates sound energy and will get attenuated to some extent until it reaches the receiver point. The five salient parameters for noise attenuation were considered here, e.g. geometric spreading, barrier, air absorption, ground effect, and meteorological effect. Algorithms of these attenuation parameters were evaluated based on the following considerations. • All the noise sources were considered as point sources or line sources or plane sources. • No directivity index was considered. • For all the receiver points the minimum resultant sound pressure level due to any number of sources was considered to be equal to the background sound pressure level of that area. Based on these algorithms,the programming was written in 'C' language. The noise database of Bhelatand mining complex of TISCO (Tata Iron and Steel Company Limited) was used to test and validate the model. The final printout of the results indicates the locations and the resultant sound pressure level [Leq(R)] of the receiver points where the resultant sound pressure level exceeded or was equal to the permissible noise level of an industrial area [75 dB]. The ultimate output is a noise contour diagram depicting the sound pressure level (Leq) exceeding the desired level.

Item Type: Article
Subjects: Mine Fire
Depositing User: Dr. Satyendra Kumar Singh
Date Deposited: 01 Mar 2012 06:28
Last Modified: 01 Mar 2012 06:28

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