GRAVITY PIPELINE TRANSPORT FOR HARDENING FILLING MIXTURES

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Transport Problems

Silesian University of Technology

Subject: Economics , Transportation , Transportation Science & Technology

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eISSN: 2300-861X

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VOLUME 10 , ISSUE 4 (December 2015) > List of articles

GRAVITY PIPELINE TRANSPORT FOR HARDENING FILLING MIXTURES

Leonid KROUPNIK / Roza ABDYKALYKOV / Aleksander SŁADKOWSKI / Yuryi SHAPOSHNIK / Sergeyi SHAPOSHNIK

Keywords : gravity pipeline transport, hardening mixture, coefficient of state

Citation Information : Transport Problems. Volume 10, Issue 4, Pages 129-136, DOI: https://doi.org/10.21307/tp-2015-054

License : (CC BY-SA 4.0)

Published Online: 21-April-2017

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ABSTRACT

In underground mining of solid minerals becoming increasingly common development system with stowing hardening mixtures. In this case the natural ore array after it is replaced by an artificial excavation of solidified filling mixture consisting of binder, aggregates and water. Such a mixture is prepared on the surface on special stowing complexes and transported underground at special stowing pipelines. However, it is transported to the horizons of a few kilometers, which requires a sustainable mode of motion of such a mixture in the pipeline. Hardening stowing mixture changes its rheological characteristics over time, which complicates the calculation of the parameters of pipeline transportation. The article suggests a method of determining the initial parameters of such mixtures: the status coefficient, indicator of transportability, coefficient of hydrodynamic resistance to motion of the mixture. These indicators characterize the mixture in terms of the possibility to transport it through pipes. On the basis of these indicators is proposed methodology for calculating the parameters of pipeline transport hardening filling mixtures in drift mode when traffic on the horizontal part of the mixture under pressure column of the mixture in the vertical part of the backfill of the pipeline. This technique allows stable operation is guaranteed to provide pipeline transportation.

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