花岗岩残积土粒度分形特征及其与物理力学参数关系研究——以厦门海沧某区域变电站为例

Study on fractal characteristics of granite residual soil particle size and its relationship with physical and mechanical parameters——A case of substations in Haicang,Xiamen

以厦门海沧两个临近工区的花岗岩残积土为研究对象,进行粒度分形维数计算,并分析了其与物理力学参数之间的关系,建立了厦门海沧地区某区域变电站的花岗岩残积土粒度分形维数与相关物理力学参数之间的回归方程。研究结果表明:粒度分形维数与所含粗颗粒的含量负相关;与含水率、饱和度、孔隙比、孔隙率、液限含水率、塑限含水率、塑性指数、液性指数、压缩系数正相关;与湿密度、干密度、压缩模量、内摩擦角负相关。

Taking granite residual soil in two adjacent working areas in Haicang area of Xiamen city as the research object,the fractal dimension of granite particle size is calculated,and the relationships between grain size fractal dimension and physical and mechanical parameters are analyzed.The regression equations between fractal dimension of grain size and related physical and mechanical parameters of granite residual soil of transformer substations in Haicang area of Xiamen city are established.The results show that the fractal dimension of particle size is negatively correlated with the content of coarse particles,positively correlated with moisture content,saturation,pore ratio,porosity,liquid limited moisture content,plastic limited moisture content,plastic index,liquid index and compression coefficient,and negatively correlated with wet density,dry density,compression modulus and internal friction angle.