Laboratory investigations of arching in backfilled mine stopes

Widisinghe, Sankha, Sivakugan, Nagaratnam, and Wang, Vincent Z. (2013) Laboratory investigations of arching in backfilled mine stopes. In: 2013 Geotechnical Society of Singapore (GeoSS), pp. 741-746. From: 18th Southeast Asian Geotechnical Conference Cum Inaugural Agssea Conference, 29-31 May 2013, Singapore.

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Abstract

Mine backfilling is an effective way of disposing of the tailings, and it improves the regional stability, allowing nearby regions to be mined. The backfilled underground voids can be approximated as rectangular prisms with base dimensions of 20-60 m and heights as much as 200 m. A series of laboratory tests were carried out in model stopes with square and rectangular cross sections, having height to width ratio of six. The stopes were instrumented to measure the fill load transferred to the base of the stope as well as the remainder that was transferred to the wall. The laboratory model test results are compared with those from analytical closed-form solutions and numerical modelling work carried out using FLAC3D, and the agreement among the three different approaches is excellent. The findings reported herein will shed some light on the understanding of the stresses within minefill stopes, and improve the design practice and the current state-of-the-art.

Item ID: 27933
Item Type: Conference Item (Refereed Research Paper - E1)
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DOI does not resolve as at 07 July 2013. This conference is also available as a book (ISBN: 978-981-07-4948-4) - please see the Related URLs field.

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ISBN: 978-981-07-4949-1
Date Deposited: 08 Jul 2013 05:22
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 100%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 100%
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