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Numerical back-analysis of structurally controlled cave initiation and propagation at the Henderson Mine

conference contribution
posted on 2011-01-01, 00:00 authored by D P Sainsbury, Bre-Anne SainsburyBre-Anne Sainsbury, M P Board, D M Loring
A numerical approach to cave assessment has been developed over the past 12 years, partly through funding provided by the International Caving Study (ICS) and Mass Mining Technology (MMT) Projects. Recent improvements have been made to the modeling methodology that allows the explicit representation of large, persistent geological structures within a cave-scale model. A numerical back-analysis of structurally controlled cave initiation and propagation has been conducted at the Henderson Mine to provide a validation of the modeling methodology to be used for evaluation of future caves. Evolution of the numerically derived yield zone during cave initiation and propagation provides a good match to measured TDR (Time Domain Reflectometry) breakages surrounding the 7210 Level cave volume. Interaction of the propagating cave with a weak geologic contact was required to be captured within the numerical model in order to achieve this correspondence. © 2011 ARMA, American Rock Mechanics Association.

History

Event

American Rock Mechanics Association. Symposium (45th : 2011 : San Francisco, Calif.)

Series

American Rock Mechanics Association Symposium

Pagination

1 - 11

Publisher

American Rock Mechanics Association

Location

San Francisco, Calif.

Place of publication

Alexandria, Va.

Start date

2011-06-26

End date

2011-06-29

ISBN-13

978-1-61839-154-4

Language

eng

Publication classification

E Conference publication; E1.1 Full written paper - refereed

Copyright notice

2011, American Rock Mechanics Association

Editor/Contributor(s)

[Unknown]

Title of proceedings

ARMA 11 : Proceedings of the 45th US Rock Mechanics / Geomechanics Symposium 2011