Experimental Studies on the Stability of Reinforced Cemented Paste Backfill

Xiawei Yi

Experimental Studies on the Stability of Reinforced Cemented Paste Backfill

Xiawei Yi

Research output: Thesis › Doctoral Thesis

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Abstract

This thesis presents experimental investigations on the mechanical behaviour of fibre-reinforced cemented paste backfill (CPB). The effects of fibre reinforcement on the UCS, shear strength, failure mode, average residual strength and energy absorption capacity were compared and discussed. The ideal types of polypropylene fibres for the reinforcement of CPB were identified. The stability of CPB models with vertically exposed faces was investigated by a series of centrifuge tests. The application of fibre reinforcement would potentially improve the self-supporting capacity of the fill mass using less cement, and reduce backfill dilution when excavating to adjacent stopes.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Ma, Guowei, Supervisor Fourie, Andy, Supervisor Dyskin, Arcady, Supervisor
Award date	22 Jul 2016
Publication status	Unpublished - 2016

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THESIS - DOCTOR OF PHILOSOPHY - YI Xiawei - 2016
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title = "Experimental Studies on the Stability of Reinforced Cemented Paste Backfill",

abstract = "This thesis presents experimental investigations on the mechanical behaviour of fibre-reinforced cemented paste backfill (CPB). The effects of fibre reinforcement on the UCS, shear strength, failure mode, average residual strength and energy absorption capacity were compared and discussed. The ideal types of polypropylene fibres for the reinforcement of CPB were identified. The stability of CPB models with vertically exposed faces was investigated by a series of centrifuge tests. The application of fibre reinforcement would potentially improve the self-supporting capacity of the fill mass using less cement, and reduce backfill dilution when excavating to adjacent stopes.",

keywords = "Fibre reinformement, Paste backfill, UCS, Centrifuge",

author = "Xiawei Yi",

year = "2016",

language = "English",

school = "The University of Western Australia",

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TY - BOOK

T1 - Experimental Studies on the Stability of Reinforced Cemented Paste Backfill

AU - Yi, Xiawei

PY - 2016

Y1 - 2016

N2 - This thesis presents experimental investigations on the mechanical behaviour of fibre-reinforced cemented paste backfill (CPB). The effects of fibre reinforcement on the UCS, shear strength, failure mode, average residual strength and energy absorption capacity were compared and discussed. The ideal types of polypropylene fibres for the reinforcement of CPB were identified. The stability of CPB models with vertically exposed faces was investigated by a series of centrifuge tests. The application of fibre reinforcement would potentially improve the self-supporting capacity of the fill mass using less cement, and reduce backfill dilution when excavating to adjacent stopes.

AB - This thesis presents experimental investigations on the mechanical behaviour of fibre-reinforced cemented paste backfill (CPB). The effects of fibre reinforcement on the UCS, shear strength, failure mode, average residual strength and energy absorption capacity were compared and discussed. The ideal types of polypropylene fibres for the reinforcement of CPB were identified. The stability of CPB models with vertically exposed faces was investigated by a series of centrifuge tests. The application of fibre reinforcement would potentially improve the self-supporting capacity of the fill mass using less cement, and reduce backfill dilution when excavating to adjacent stopes.

KW - Fibre reinformement

KW - Paste backfill

KW - UCS

KW - Centrifuge

M3 - Doctoral Thesis

ER -

Experimental Studies on the Stability of Reinforced Cemented Paste Backfill

Abstract

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