【摘要】 采用土力学中的三轴试验方法,对南海深海海底沉积物进行力学性能研究。得到海底沉积物样品的主应力差与轴向应变曲线及抗剪强度数据,并得到海底沉积物样品的破坏点应力值与含水量、湿密度及孔隙度的关系曲线。通过分析,得到海底沉积物样品的破坏点应力值在含水量40%~45%之间以及在孔隙度50%~55%之间分别取得最大值。通过对比表明试验的海底沉积物样品的力学性能与陆地的半脆性黏土相近。更多还原

【Abstract】 The data of mechanical properties of seafloor sediments are one of the basic data of ocean engineering construction. Studies on mechanical properties of the seafloor sediments in the South China Sea are conducted,using the triaxial test method of soil mechanics. The results obtained are the relationship curve between the principal stress difference and axial strain of the seafloor sediments samples,including shear strength data,and the relationship curve between the stress value of failure point of seafloor sediments and the moisture content,wet density and porosity. Through the analysis,the conclusion is drawn: the stress value of failure point of seafloor sediments reaches the maximum value in moisture content between 40% ~ 45% and porosity between 50% ~ 55%. By comparison,it shows that the mechanical properties of seafloor sediments test samples are similar to those of the semi-brittle clay on land.更多还原