论文部分内容阅读
本文根据闸基地质资料,从地基土的不均匀系数、细料含量及反滤设计原则等方面分析,认为地基土为缺乏中间粒径的管涌土。 据地基土的颗分成果、渗透系数、孔隙率等表征值,用五种方法分析确定地基土的容许坡降为0.05,并判定土的渗透变形破坏形式属管涌,除采取齿墙、地下连续墙等防渗设施外,必须在渗流逸出处铺筑反滤层。提出了在厚层砂卵石地基上建船闸,缺乏管涌试验资料时,评定地基土渗透稳定的各种方法的应用经验。
Based on the geological data of the sluice gate, this paper analyzes the inhomogeneity coefficient, the fines content and the inversion filter design principles of the foundation soil. It is considered that the foundation soil is a pipe earth lacking in the middle particle size. According to the scores of the foundation soil such as grain fraction, permeability coefficient, and porosity, the allowable slope drop of the foundation soil is determined by five methods and is determined to be 0.05. It is determined that the soil infiltration deformation is in the form of piping, except that tooth wall and underground continuous Outside walls and other impervious facilities, it is necessary to construct a reverse filter at the place where seepage occurs. The application experience of various methods for assessing the stability of foundation soil in the absence of piping test data is proposed for the construction of ship locks on thick sand and gravel foundations.