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Permitted emulsion explosives are exclusively designed for hazardous flammable environments, offer controlled detonation, and low incendivity during blasting operations. However, poor permitted explosive composition can sometimes lead to unintended operational inefficiencies and safety threats in underground coal mines. As per the United States Environmental Protection Agency (EPA) report, a methane-rich environment in underground coal mines poses significant calamities, predominantly when methane concentration reaches its flammable range in between 5 to 15% in mine air. Therefore, understanding the ignition behaviour of permitted explosives under critical methane environments is necessary to paramount a sustainable and safe underground mine blasting operations. This study aims to investigate the incendivity properties of different permitted explosive (PE-5) samples in the presence of methane gas environment within a cannon gallery. Furthermore, the deflagration studies of permitted explosive (PE-5) were examined. Additionally, detonation properties of explosive (PE-5) samples were carried out in Laboratory. Studies revealed that sample-1 of PE–5 was unsuitable for underground coal mines as per Directorate General of Mines Safety (DGMS) safety standards. Whereas, sample-2 of PE-5 was found suitable for underground gaseous coal mines considering Incendivity experiments. Moreover, this article provides an in-depth understanding of incendivity risks and detonation behaviour of permitted explosive (PE-5) samples.

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Study on the Detonation Behaviour and Incendivity Property of Permitted Emulsion Explosives

  • 会议论文

  • 发表日期：

    2026年

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  • Firoj Ali,
  • Sunil Kumar Dhar,
  • Vishwajeet Kumar,
  • Arvind Kumar,
  • Chhangte Sawmliana

摘要

Permitted emulsion explosives are exclusively designed for hazardous flammable environments, offer controlled detonation, and low incendivity during blasting operations. However, poor permitted explosive composition can sometimes lead to unintended operational inefficiencies and safety threats in underground coal mines. As per the United States Environmental Protection Agency (EPA) report, a methane-rich environment in underground coal mines poses significant calamities, predominantly when methane concentration reaches its flammable range in between 5 to 15% in mine air. Therefore, understanding the ignition behaviour of permitted explosives under critical methane environments is necessary to paramount a sustainable and safe underground mine blasting operations. This study aims to investigate the incendivity properties of different permitted explosive (PE-5) samples in the presence of methane gas environment within a cannon gallery. Furthermore, the deflagration studies of permitted explosive (PE-5) were examined. Additionally, detonation properties of explosive (PE-5) samples were carried out in Laboratory. Studies revealed that sample-1 of PE–5 was unsuitable for underground coal mines as per Directorate General of Mines Safety (DGMS) safety standards. Whereas, sample-2 of PE-5 was found suitable for underground gaseous coal mines considering Incendivity experiments. Moreover, this article provides an in-depth understanding of incendivity risks and detonation behaviour of permitted explosive (PE-5) samples.