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针对客运铁路专线沿线遇到的大量软质千枚状板岩,通过室内试验研究,得出试验成果,并分析了作为路基填料的软质千枚状板岩的工程特性,包括结构特征、物理化学性质、水理性质等。试验研究得出千枚状板岩填料组别可划分为C组,用于基床底层和基床以下路堤填筑时需进行改良,改良方法可采用加入粗粒土(如中粗砂)进行级配改良或加入石灰或水泥进行化学改良。填筑质量检测采用地基系数K30和孔隙率双指标控制,建议现场试验增加动态变形模量Evd检测。
Aimed at a large number of soft muscovite slate encountered along passenger dedicated railway lines, the experimental results were obtained through laboratory experiments and the engineering characteristics of the soft muscovite slate as subgrade filler were analyzed, including structural characteristics, physical Chemical properties, water quality and so on. Experimental studies have shown that the group of thousands of slate filler can be divided into Group C for the improvement of the embankment filling the bottom of the bed and subgrade bed, the improved method can be used to join the coarse grained soil Grading improved or by adding lime or cement for chemical modification. Fill quality testing using foundation coefficient K30 and dual porosity control, it is recommended field test to increase the dynamic deformation modulus Evd detection.