四川盆地区红层无粘性土石混合料强度参数预测模型研究

Study on the Strength Parameter Prediction Model of Red Layer Non-cohesive Soil Rock Mixture in Sichuan Basin

通过四川盆地区红层无粘性土石混合料的多组大型三轴试验,揭示了强度参数随干密度、砾石含量和最大粒径等多个影响因素的变化规律,用最小二乘法拟合得到了各试验控制因素与强度参数的关系表达式,建立并验证了土石混合料的多影响因素强度参数预测模型。预测模型对于类似土石混合料的强度参数预测具有重要的参考意义。

Base on several large-scale triaxial test results of the red layer non-cohesive soil rock mixture in Sichuan Basin,variation rules of strength parameters with the dry density,gravel content and the maximum particle size were studied.The relational expression between the strength parameters and the control factors was obtained by the least square method.The multi-factors predictive mathematical model of the earth-rock mixture strength parameters was established and confirmed.This prediction model is useful for the strength parameters prediction of the similar earth-rock mixture.