含砂低液限黄土冲沟高填方路基填筑质量控制

On exploration for filling quality control of high-fill subgrade at loess gully of sand with low liquid limit

针对我省西北地区普遍存在的含砂低液限黄土的颗粒组成、物理和力学性质、压实性能等问题进行试验研究和微观理论分析,研究含砂低液限黄土的内部结构与工程特性之间的关系,研究其压实机理,并针对特殊的压实特性提出相应合理的压实度控制指标,并优化现有的路堤压实工艺,确保含砂低液限黄土作为路堤填料的压实度要求。

According to the common particle composition, the physical and dynamic feature, the compaction performance of the loess with low liquid limit in northwest of Shanxi province, the paper undertakes the experimental research and the microscopic theory analysis, researches the relationship between the internal structure of the loess with low liquid limit and its engineering features, studies its compaction mechanism, points out the respective reasonable compaction controlling index according to its typical compaction feature, and optimizes the current embank- ment compaction, and ensures the loess with the low liquid limit can meet the compaction demand as the embankment filler.