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通过物理模型试验,研究在强夯冲击荷载作用下煤矸石的破碎密实机理。强夯时巨大的冲击能对煤矸石地基进行冲击,其冲击力远远超过煤矸石的强度而使煤矸石产生破碎,因此粗大矸块含量减少,细粒增加,级配改善,密实度增大,承载能力相应的提高。并通过强夯前后级配曲线的变化来分析煤矸石破碎程度与夯击能大小之间的关系,为施工参数的选取提供参考和指导。
Through the physical model test, the compaction mechanism of coal gangue under dynamic compaction impact loading was studied. Strong impact on the impact of gangue base impact, its impact far exceeds the strength of coal gangue and coal gangue crushing, so reduce the content of coarse gangue, fine-grained increase grading improved, increased density , The corresponding increase in carrying capacity. Through analyzing the grading curves before and after dynamic compaction, the relationship between the extent of coal gangue crushing and the amount of impact energy can be analyzed to provide reference and guidance for the selection of construction parameters.