煤矸石固结压密性与颗粒级配缺陷关系研究

重点探讨了煤矸石粒度分布的级配与压密性的关系问题，用不同颗粒级配煤矸石所作的压密和渗透对比试验的结果表明，影响天然煤矸石固结压密性的主要级配缺陷是细小颗粒含量比例过低，通过适当提高矸石中细小颗粒含量的级配改良，不但可以有效提高煤矸石的固结性，使其在较低的压密能量下取得较高的固结压密程度，并且能够使煤矸石的水稳性得到明显改善

Study on Relationship Between Consolidation-Compactness and Size Grade Shortage of Coal Gangue

Coal gangue used as engineering material needs a higher compactness, but compactness of it appears to have some complex features because of peculiar lithologic composition and grain size distribution . This paper discusses the relationship between granulometric composition and compactness of coal waste. The results of the compacting and permeability test using coal gangue with different grain size distribution show that the main grain grade shortage impacted consolidationcompactness is a lower content of finegrain, especially silt and clay grain grade. If the content of the finegrain is increased, not only the consolidation of gangue can be enhanced effectively, namely, the coal gangue can get a higher degree of consolidation under a lower compacting energy, but also the waterstability can be improved obviously.