Singh, Arun Kumar and Kumar, Ashok and Singh, Rajendra and Ram, Sahendra and Kumar, Rakesh and Singh , Amit Kumar (2020) Coal Pillar Extraction Under Weak Roof. Mining, Metallurgy & Exploration, 37. pp. 1451-1459.

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Abstract

This article offers an examination of a retreat mining method conducted at the Pinoura Mine in India from 2010 to 2017. The method is atypical for coal mines of India’s coalfields. The method executes depillaring in a single pass and does not require the formation of galleries and support installation in splits, thus, reducing the cycle time. A variety of observations are discussed throughout this work and emphasis is placed on field measurements and depillaring under weak roof (RMR = 40–45). This paper discusses design techniques, specifically the estimation of the snook (remnant pillar) size, and important practical observations after the fact. The execution of this method was eventually conducted in eleven panels.

Item Type:	Article
Uncontrolled Keywords:	Mechanized depillaring Single-pass pillar extraction Weak roof Roof fall Snook
Subjects:	Geo-Mechanics and Mine Design
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	18 Dec 2020 09:20
Last Modified:	18 Dec 2020 09:20
URI:	http://cimfr.csircentral.net/id/eprint/2271

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