Temperature change and the total stress anomaly in paste backfill

Hasan, Alsidqi and Ting, Wee Kiet and Fauzan, Sahdi and Siti Noor Linda, Taib and Norsuzailina, Mohamed Sutan and Badhrulhisham, Abdul Aziz and Fourie, Andy (2018) Temperature change and the total stress anomaly in paste backfill. International Journal of GEOMATE, 14 (44). pp. 90-95. ISSN 2186-2990. (Published)

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This paper presents preliminary results from a laboratory backfill model test in order to explain the effect of temperature change during the cement hydration on the total stress within cemented paste backfill. It is conducted via temperature control test in the absence of the cement. This investigation is an attempt to resolve an anomalous behavior reported in recent full scale monitoring reports, where the total vertical stress at the stope base shows a progressive increase after backfilling is terminated. The result in this paper shows that the total vertical stress is not affected by the level of the temperature but rather by the temperature gradient. The empirical relationship between the temperature gradient and the change in the total vertical stress is proposed. The total stress anomaly found in the full scale monitoring of paste backfill could be explained by the finding.

Item Type: Article
Uncontrolled Keywords: Backfill; Temperature; Arching; Total Stress; Anomaly
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Centre of Excellence: Centre for Earth Resources Research & Management
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 06 Aug 2018 04:48
Last Modified: 06 Aug 2018 04:48
URI: http://umpir.ump.edu.my/id/eprint/20741
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