Rock Mechanics Study on the Recovery of Residual Pillars in Pinglidian Gold Mine, China

DOI

10.2991/icmce-14.2014.9How to use a DOI?

Keywords

Residual Pillars Recovery, Roof Loosening Layer Detection, Numerical Modeling, Stress Monitoring in Field, Backfill Materials Test

Abstract

The Pinglidian gold mine locates at the Laizhou city, Shandong province, China. Up to 2013, the orebodies had been mined out, however, there is leaving mined voids of about 120,000 m2 and also leaving a large number of ore pillars. The residual pillars have to be recovered. In order to safely recover those residual pillars in the mine, some rock mechanics study work, including the detection of roof loosening layer depth of mined voids, the 3-d numerical modeling and the field monitoring of the stresses changing of pillars adjacent to recovering operation, has been done, and for recovery operation of backfill method with hydraulic prop supporting, the required mechanical properties of cemented tailings fill materials have been tested. Finally, a trial recovering stope has been successfully and safely mined

Copyright

© 2014, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhen-Bin RAO
AU  - Si-Jing CAI
AU  - Gang HUANG
PY  - 2014/12
DA  - 2014/12
TI  - Rock Mechanics Study on the Recovery of Residual Pillars in Pinglidian Gold Mine, China
BT  - Proceedings of the 2014 International Conference on Mechanics and Civil Engineering
PB  - Atlantis Press
SP  - 44
EP  - 48
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmce-14.2014.9
DO  - 10.2991/icmce-14.2014.9
ID  - RAO2014/12
ER  -