Controlled Blasting Practices in Quarries for Sustainability: a case study

1 Aug 2020 / by P. BALAMADESWARAN, A. K. MISHRA

Abstract: In the mining industry, the rock breakage by drilling and blasting plays a vital role as it facilitates not only fragmentation of rock mass but also controls consequent mining operation. In order to increase the production capacity or prolong the life of the deposit, the expansion of mine is unavoidable. However, when the mines are located in close to the habitations or any other sensitive areas, then there is often conflict due to the environmental effects due to blasting in the mines resulting in creating an adverse effect on industrial relation of the mine operator. Apart from maintaining the public relation, it is necessary to satisfy the mandate of the regulatory agencies due to imposition of statutory restrictions on the mine management while the mining operations are carried out in such challenging situations. The society generally expects that the negative impacts will be managed, and the benefits distributed fairly for ensuing sustainable mining. Ground vibration is one of the most environmental effects produced by any blasting operation affecting the structural characteristics of the buildings. Therefore, the proper prediction of blast-induced ground vibrations accommodating the influence of geological changes within the mine is essential to ensure the safety and stability of the structures not belonging to the mine operator during the blasting. This paper presents a case study where the expansion of the limestone quarry for the sustainable mining operations necessitates the usage of precise initiation system and adoption of suitable techniques for managing the other environmental impacts due to blasting

 

Keywords: Quarry, blasting, electronic detonators, ground vibration and fly rock.

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