Numerical simulation of stress distribution in longwall panels during the first caving interval

Mohammadi, Sadjad and Ataei, Mohammad and Kakaie, Reza and Mirzaghorbanali, Ali and Aziz, Naj and Rastegarmanesh, Ashkan (2019) Numerical simulation of stress distribution in longwall panels during the first caving interval. In: 2019 Coal Operators' Conference, 18-20 Feb 2019, Wollongong, NSW, Australia.

Abstract

Reliable prediction of induced stress distribution in longwall panels enhances safety in longwall mining. This paper presents the results of numerical simulation intended to examine stress distribution in terms of peak abutment pressures during the first caving of longwall mining. Longwall mining was simulated by incorporating Universal Distinct Element Code (UDEC). Several conceptual models were developed and subsequently analyzed to investigate the effects of five critical parameters on peak abutment pressures. Critical parameters that were studied as a part of this investigation included roof strata uniaxial
compressive strength, immediate roof height, spacing of bedding planes and Vertical and horizontal in situ stresses. The results of numerical simulation increased the current understanding of rear and front abutment pressures in longwall mining under various geomining conditions.


Statistics for USQ ePrint 36603
Statistics for this ePrint Item
Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: No paper in these proceedings is to be re-published unless with written permission from the conference organisers and/or the original authors who maintain the copyright for their work.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 05 Aug 2019 23:47
Last Modified: 05 Aug 2019 23:52
Uncontrolled Keywords: coal mining, longwall mining, caving interval, stress distribution
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091402 Geomechanics and Resources Geotechnical Engineering
09 Engineering > 0914 Resources Engineering and Extractive Metallurgy > 091405 Mining Engineering
URI: http://eprints.usq.edu.au/id/eprint/36603

Actions (login required)

View Item Archive Repository Staff Only