Laboratory test and particle flow simulation of silos problem with nonhomogeneous materials

Yung Ming Cheng, Z. N. Liu, W. D. Song, S. K. Au

Research output: Journal article publicationJournal articleAcademic researchpeer-review

13 Citations (Scopus)


Underground mine caving may induce collapse of the ground during ore caving, particularly when there is a loose material on top of the mine. In the present paper, a laboratory test is performed to model this mining problem which is followed by a particle flow simulation to simulate the interaction and movement between the two materials. For this nonhomogeneous problem, an interesting columniform channel for the loose material is formed during the drawing in both the experiment tests and the numerical modeling. The formation of this channel greatly affects the efficiency of ore drawing and the stability of the mine caving. The numerical modeling can be used for the optimization of ore drawing, ore drawing management and the prediction of ore loss and dilution indexes. The importance of the moisture content on ore drawing process and the efficiency of ore drawing are also investigated by both experimental and numerical tests, and useful results are found from the present study.
Original languageEnglish
Pages (from-to)1754-1761
Number of pages8
JournalJournal of Geotechnical and Geoenvironmental Engineering
Issue number11
Publication statusPublished - 1 Jan 2009


  • Laboratory tests
  • Mining
  • Particles
  • Simulation
  • Solids flow

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Environmental Science(all)


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