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Gold Science and Technology ›› 2016, Vol. 24 ›› Issue (5): 86-93.doi: 10.11872/j.issn.1005-2518.2016.05.086

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Study on the Deposition Mechanism of Two-phase Flow Pipeline in Deep Filling System

GUO Jiang，LIU Ming，ZHANG Bixiao   

  1. School of Resources and Safety Engineering，Central South University，Changsha    410083，Hunan，China
  • Received:2016-06-27 Revised:2016-09-01 Online:2016-10-28 Published:2016-12-27

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Abstract:

In order to solve the problems of safety production due to the deposition of pipeline in a deep mine，through the study on the deposition mechanism of deep level pipelines system，and based on solid-liquid two-phase flow theory，the deposition mechanism of two-phase flow pipeline is interpreted from the aspects of fine particulate fouling and coarse particle deposition.The FLUENT fluid dynamics software was used to model and analyze，the fine particles in slurry and the water mixed homogeneous suspension are seem as continuous phase，coarse particles are seem as discrete phase，and then according to the concentration distribution of the coarse particles in the slurry and the characteristics of the pipe velocity distribution，the characteristics of the particle deposition in the pipeline are determined.The results show that the scaling of the fine particles and the deposition of  the coarse particles are the main reasons of  two-phase filling flow pipe sediment.The numerical simulation of the two-phase flow filling process is consistent with the theoretical analysis.

Key words: deep well filling, deposition mechanism, solid-liquid two-phase flow, discrete phase model

CLC Number: 

  • TD853

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