邹城地区黏土体-结构面接触渗透下渗流侵蚀试验研究OA

To study the destructive mechanism of seepage erosion of clay body-structure surface under hydraulic buildings in Zoucheng,a self-developed infiltration test device was used to carry out the characterisation of seepage erosion under the influence of structural surface roughness,clay particle content and other factors.The test shows that the evolution of seepage erosion is in the seepage stabilisation,acceleration and erosion phases,and the change of particle loss is consistent with the trend of these three phases.The roughness of the structural plane is different,which will have an effect on the local seepage of the clay body-structural plane,and has little effect on the particle loss and tangential deformation of the clay body.The clay composition will change the seepage erosion process of the clay body,especially in the seepage acceleration period.The higher the clay content,the less the particle loss of the sample,and the clay composition can enhance the shear resistance of the sample,change the balance between the seepage force and the particle connection force,reduce the influence of seepage erosion on the particle flow,and improve the anti-seepage ability of the clay body.The results of the clay body-structural surface contact infiltration relationship and seepage erosion has a certain reference value.