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摘要
Abstract: On the basis of discrete element method, this paper built the particle flow model of coal particles through slotted screen with PFC2D software, presented the ability of coal micro-particles through slotted screen, as well as the influence of parameters, including joint strength between particles, slot width divided by particle diameter and ambient pressure. The results show that the passed particle linearly decreases with the joint strength increasing. As the ratio of slot width divided by particle diameter going up, the passed particles increase correspondingly. And to ensure coal-bed structure stable, the ratio should be less than 10.Besides, the volume increases with ambient pressure rising, yet there is certain jumped platforms, which means the volume will be stable in some depth ranges.
- 出版日期2012
- 单位中国石油大学（华东）
