Drainage issues and stress developments within hydraulic fill mine stopes

Sivakugan, N. (2008) Drainage issues and stress developments within hydraulic fill mine stopes. Australian Journal of Civil Engineering, 5 (1). pp. 61-70.

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Abstract

The mining industry plays a vital role in the Australian economy. The large voids created in the process of underground mining are filled with minefills, with hydraulic fill being one of the most popular backfills used in Australia and worldwide. Barricade failures within the drives have claimed many lives worldwide. Drainage and stress developments within the hydraulic fill are the two main issues that need to be addressed in an attempt to provide a safe working environment in the mines. Drainage relates to the pore water pressure developments within the stope, and proper understanding of the stress developments within the stope is necessary to quantify the loadings on the barricade more realistically. This paper summarises the research carried out at James Cook University over the past five years through four PhD projects in these two areas, namely drainage and stress developments. This includes extensive experimental studies on hydraulic fills and porous barricade bricks and numerical modelling using FLAC. A new vertical stress reduction factor (alpha) is proposed that quantifies the stress reduction taking place within the fill due to arching.

Item ID: 5905
Item Type: Article (Refereed Research - C1)
Keywords: minefill; mine stope; arching; drainage; numerical modelling; FLAC
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ISSN: 1448-8353
Date Deposited: 11 Feb 2010 05:04
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 100%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8402 Primary Mining and Extraction Processes of Mineral Resources > 840205 Mining and Extraction of Precious (Noble) Metal Ores @ 50%
84 MINERAL RESOURCES (excl. Energy Resources) > 8499 Other Mineral Resources (excl. Energy Resources) > 849999 Mineral Resources (excl. Energy Resources) not elsewhere classified @ 50%
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