论文部分内容阅读
岩体爆破堆石体颗粒存在显著差异,不同于均质细粒土,采用干重度归一化指标——压实度评价堆石体压实质量十分困难。固体体积率指标,避免了颗粒材性变化的影响,评价堆石体质量更加稳定,且规律性更好。但是,固体体积率评价标准为定值时,无法考虑试坑堆石体级配特征变化。运用Ziegler提出的最大干密度计算公式,延伸出相对固体体积率,考虑了级配特征对固体体积率的影响。两者相关性研究表明:同一固体体积率,不同试坑料级配差异,导致相对固体体积率相差6%～7%。固体体积率评价堆石体质量虽基本可行,但相对固体体积率则更加合理。
Different from the homogeneous fine grained soil, it is very difficult to evaluate the compaction quality of the rockfill body by using the normalized index of dry weight - compaction degree. The solid volume rate index, to avoid the impact of changes in the granular material, the evaluation of rockfill body quality is more stable and better regularity. However, when the evaluation criteria for solid volume rate are fixed, it can not consider the variation of grading characteristics of the trial rockfill body. Using Ziegler’s formula for calculating the maximum dry density, the relative solid volume fraction is extended, and the influence of gradation characteristics on the solid volume fraction is taken into account. Correlation between the two studies showed that: the same solid volume rate, different trial pit material gradation, resulting in a relative solid volume fraction of 6% to 7%. Solid volume rate evaluation Although the rockfill quality is basically feasible, but the relative solid volume fraction is more reasonable.