Investigation and mapping of toxic fumes produced by detonation of ANFO explosives in underground space

Author:

Ali Firoj12ORCID,Himanshu Vivek Kumar12,Kumar Arvind12,Vishwakarma Ashish Kumar1,Sahu Sanjeev Kumar3,Bohra Purushottam Das3,Mishra Arvind Kumar1

Affiliation:

1. Rock Excavation Engineering Division CSIR-Central institute of Mining and Fuel Research Barwa Road Dhanbad, Jharkhand India

2. Academy of Scientific and Innovative Research (AcSIR) Ghaziabad 201002 India

3. Malanjkhand Copper Project Hindustan Copper Limited Malanjkhand, MP 481116 India

Abstract

AbstractPost‐blast fumes are hazardous and known to cause severe health related issues of workers. Further, these harmful gases have a significant impact on the surrounding environment. Thus, it is imperative to have an in‐depth understanding of the real time detonation fume generation in underground space to avoid hazardous health risk of the worker. In this context, the mapping of toxic fume concentrations generated by the detonation of ANFO explosives in the actual field is a fascinating area of research that has a great environmental impact. This article examined the real‐time analysis of toxic fumes generated by ammonium nitrate fuel oil (ANFO) explosives at various locations of a metalliferous underground mine. Furthermore, detonation parameters of various ANFO explosive compositions were also studied at the mining site. On‐site blasting studies were performed with ANFO explosives, and post‐detonation fume measurements enabled us to map the CO and NOx concentrations in underground spaces. Toxic fumes like CO and NOx were analyzed before and after each blasting operation at different intervals, and found within the allowed limit as per the Directorate General of Mines Safety guidelines. Additionally, an empirical correlation has been established to evaluate the maximum detonation velocity based on the alteration of ammonium nitrate and fuel oil composition.

Publisher

Wiley

Reference27 articles.

1. Testing of mining explosives with regard to the content of carbon oxides and nitrogen oxides in their detonation products

2. K. K. Eltschlager W. Schuss T. E. Kovalchuk inInternational Society of Explosives Engineers (ISEE) Proceedings of the 27thAnnual Conference on Explosives and Blasting Technique ISEE Cleveland OH2001.

3. International Society of Explosives Engineers OSHA Permissible Exposure Limits OSHA Annotated Table Z-1https://www.osha.gov/dsg/annotated-pels/tablez-1.html(accessed: October 2017).

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