Effect of velocity on flow properties and electrical resistivity of cemented coal gangue-fly ash backfill (CGFB) slurry in the pipeline
Powder Technology, ISSN: 0032-5910, Vol: 396, Page: 191-209
2022
- 31Citations
- 15Captures
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Article Description
During the pipeline transportation of backfill slurry, flow velocity has direct effects on the transport properties and then influences pipe blockage and wear. In this paper, a novel flow loop-horizontal electrical resistivity (HER) test system and Eulerian model were used to investigate the flow behavior and HER characteristic of cemented coal gangue-fly ash backfill (CGFB) slurry under different flow velocity. The results showed that: 1) The pressure drop of CGFB slurry increased linearly with flow rate. 2) The increase in flow rate significantly reduced coarse aggregate contents near the bottom of the pipeline. 3) As the flow rate increases, the fluctuation of measured HER with time increased, the HER differences decreased, and the ranges of the high and low resistance area at the bottom and top of the pipeline, respectively, kept decreasing. The results can provide guidance for HER monitoring of flow state of CGFB slurry in pipeline.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0032591021009323; http://dx.doi.org/10.1016/j.powtec.2021.10.050; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85118581149&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0032591021009323; https://dx.doi.org/10.1016/j.powtec.2021.10.050
Elsevier BV
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