Pal Roy, P. and Sawmliana, C and Bhagat, N.K. (2003) Induced caving by blasting: innovative experiments in blasting gallery panels of underground coal mines of India. transactions of the Institution of Mining & Metallurgy Sec. A, Mining Technology, 112. pp. 57-63. ISSN 0371-7844

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Abstract

Induced caving by blasting during depillaring of panels in underground coal mines has received limited attention. This technique has become an integral part of a mining operation known as the blasting gallery (BG) method in India. Systematical deep hole (16-30 m) blasting has been successfully carried out from underground split galleries in BG panels. A study of drilling and blasting parameters, gas hazards, strata behaviour and ground vibration was undertaken as part of a research project for the Indian Ministry of a coal and Mines. Strata behaviour during blasting and ground movements were critically investigated. All experiments were conducted using newly developed explosive and detonating cord systems. A new blast damage index is proposed for damage assessment of the underground roof and pillars of BG panels. Useful mathematical formulas are described as an aid to future design.

Item Type:	Article
Subjects:	Blasting
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	07 Dec 2011 03:58
Last Modified:	16 Jul 2012 04:53
URI:	http://cimfr.csircentral.net/id/eprint/272

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