【摘要】 通过对软土中有机质含量及物理力学指标的分析和研究,阐明了软土中有机质含量与物理力学参数之间的关系,从力学角度探讨了有机质含量对软土力学效应的影响。研究结果表明:随着有机质含量的增加,软土中的含水量,孔隙比等呈线性增加,而软土的原状土与重塑土的十字板剪切强度、静力触探比贯入阻力、渗透系数、固结系数都是减小的。当有机质含量为1.74%时,软土的物理力学性质发生变化,力学软化效应尤为显著,且此时软土的渗透能力达到最大。更多还原

【Abstract】 The research indicates that with the increase of the organic matter content,some indexes such as natural water content and natural void ratio increase in linear regularity,and some other indexes such as vane shear strength,specific penetration resistance,permeability coefficient,and consolidation coefficient decrease.When organic matter content reaches to 1.74%,the physical and mechanical characters of soft soils have a big change,that means the soften effects on mechanical properties are especially distinct;meanwhile,the permeability capacity reaches to the maximum value.更多还原