Title

Effect of Immediate Strata on Pillar Behavior in Retreat Pillaring - a Case Study

Abstract

This paper deals with the analysis of pillar failure in a room and pillar mining operation of a deep underground coal mine. The incident here involved the failure of more than 100 pillars. The mechanism of pillar failure (bump/squeeze) has been studied in detail. The analysis consists of inmine eyewitness observations, laboratory experiments and analytical study of the pillar failure area using finite element technique. Results indicated that the mechanical properties of coal, roof and floor, geologic condition, and the method of operation have affected the mode of pillar failure.

Meeting Name

5th Conference on Ground Control in Mining.

Department(s)

Mining and Nuclear Engineering

Sponsor(s)

United States. Bureau of Mines
US Mine Safety & Health Administration, Washington, DC, USA
West Virginia Univ, Morgantown, WV, USA

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1986 Society for Mining, Metallurgy & Exploration Inc. (SME), All rights reserved.

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