|
Abstract
|
Article Information:
Assessment of Atmospheric and Meteorological Parameters for Control of Blasting Dust at an Indian Large Surface Coal Mine
S. Roy, G.R. Adhikari, T.A. Renaldy and T.N. Singh
Corresponding Author: S. Roy
Submitted: 2010 November, 27
Accepted: 2011 January, 07
Published: 2011 April, 05 |
Abstract:
|
The aim of the study was to assess the atmospheric and meteorological parameters for the control
of blasting dust. Dust generated due to blasting at large surface coal mines causes air pollution in and around
the mining area. The dispersion of blasting dust depends on prevailing atmospheric and meteorological
conditions. A Sound Detection and Ranging (SODAR) was installed at the mine site to monitor atmospheric
conditions in four seasons. Over 2000 sodar echograms were examined and classified into six categories as
rising layers, thermal plume (free), ground based layer (spiky top), spiky top layer (clear weather), flat top layer
(calm cold), and ground based stratified and multiple layers. Dot echo structures in the echograms were also
observed during rainfall. From sodar echograms, unstable and stable periods were identified. Pasquill stability
classes were evaluated by echograms and mixing heights. An automatic weather station was also installed at
the site to monitor meteorological parameters as wind speed, wind direction, temperature, humidity, solar
radiation and rainfall. Simple correlations as well as multiple regression analysis of meteorological parameters
with mixing height show that solar radiation has strong influence on mixing height. The nearby villages that
are likely to be affected by blasting dust can be protected by planting trees perpendicular to the wind direction
as indicated by windrose diagrams. Dispersion factors, the product of mixing height and wind speed, were
calculated for all the seasons. It was suggested that blasting should be conducted during the period when the
dispersion factor is maximum so that the impacts of blasting dust on the environment can be minimised.
Key words: Blasting dust, dispersion factor, meteorological parameters, mixing height, Sodar, stability classes,
|
|
Abstract
|
PDF
|
HTML |
|
Cite this Reference:
S. Roy, G.R. Adhikari, T.A. Renaldy and T.N. Singh, . Assessment of Atmospheric and Meteorological Parameters for Control of Blasting Dust at an Indian Large Surface Coal Mine. Research Journal of Environmental and Earth Sciences, (3): 234-248.
|
|
|
|
 |
ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
 |
| Information |
|
|
|
|
| Sales & Services |
|
|
|
|
