碾压堆石体在高回填的港口护岸、水利堤防、市政建设项目中得到广泛应用。碾压堆石体的抗剪强度指标是工程设计中最重要的参数,以堤身结构为碾压堆石体的涪陵城区移民迁建防护大堤为工程实例,通过在施工试验段进行的现场大型剪切试验,对碾压堆石体的Mohr-Coulomb抗剪强度准则参数内聚力C、内摩擦角的随机特征进行分析,研究参数C、的变异性和相关性,为合理选取既定料场前提条件下的施工方法及对应的抗剪强度指标提供科学依据。 RCC rockfill in the high backfill of the port revetment, water dikes, municipal construction projects have been widely used. The shearing strength index of RCC is the most important parameter in engineering design. Taking the dam body structure as the compacted rockfill for Fuling urban area relocating and protecting the dike as an example, through the large-scale on-site Shear tests are conducted to analyze the random cohesion C and internal friction angle Mo of the Mohr-Coulomb shear strength criterion of RCC compacts, and to study the variability and correlation of the parameters C and,. In order to select the appropriate material field The preconditions for the construction method and the corresponding shear strength index provide a scientific basis.