粉煤灰渗透变形特性

Seepage Deformation Characteristics of Flyash

渗透变形问题是湿法贮灰坝体稳定的重要因素之一。本文围绕秦岭电厂二灰场有代表性的三种灰样 ,模拟自然沉积灰和压实灰 (子坝填筑 ) ,在不同干密度状态下进行渗透变形试验的结果进行整理、分析、求得抗渗强度、渗透变形型式与粉煤灰干密度、颗粒级配、试验方法的关系 ,以及粉煤灰产生渗透变形的机理。

Seepage deformation is one of the important factors of dam stabilisation with wet storage of flyash. On the basis of three kinds of flyash in Qinling power plant and by the simulation of natural sedimentation flyash and compacted flyash, the seepage deformation test has been made in different dry densities. The test results are analyzed to obtain the relationship between impervious strength, types of seepage deformation and dry density of flyash, grain composition, test method, and also to obtain the machanism of seepage deformation of flyash in this paper.