Roy, S.K. and Singh, R. R. and Kumar, Ritesh (2006) Explosive - Cord System for Blasting Gallery Method. Indian Mining & Engineering Journal , 45 (6-8). pp. 37-40. ISSN 0019-5944

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Blasting Gallery (BG) method of mining thick seams has been proved advantageous over other methods vis-à-vis production, productivity, investment, conservation etc. since 1987 when it was introduced with collaboration and technical assistance from CdF, France. As pattern of drilling and conditions of usage of explosives in Blasting Gallery method differs from the conventional blasting in cut face or solid blasting, specially designed explosives-cord system is required for use in ringhole blasting in BG panels. Ban of NG-based explosives by Govt. of India caused impasse in execution of BG panels practiced in five mines in Singareni Collieries Company Limited (SCCL) and one mine in Coal India Limited (CIL) as there was no alternative non-NG based explosive-cord system approved for use in BG panels. Development of Powerring-Powercord system, the first and only emulsion based explosive with suitable cord system, for use in BG method was accomplished under joint efforts put by Central Mining Research Institute (CMRI) and Indian Explosives Limited (IEL). Laboratory trials under simulated conditions at CMRI and field trial of Powerring-Powercord system in SCCL mines have demonstrated its safety and efficacy. The paper describes the development of explosive-cord systems including powering – Powercord system.

Item Type: Article
Subjects: Explosive and Explosion
Depositing User: Dr. Satyendra Kumar Singh
Date Deposited: 21 Dec 2011 09:46
Last Modified: 21 Dec 2011 09:46

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