土石坝渗流研究综述

Summary of seepage research for embankment dam

渗流和渗透控制是土石坝工程中的一项极其重要的课题,直接关系到工程的安全和投资。许多水工建筑物的失事都与渗流有关。从渗流量计算、渗透变形、渗透控制、渗流的数值模拟和渗透变形试验几个方面总结了国内外的研究现状和成果。认为今后研究重点应放在研制能够测定宽级配料在有围压条件下垂直向、水平向临界水力坡降与渗透系数的设备上,并应开展相应的理论分析。还应该研究建立渗透分析模型,利用其分析散粒体颗粒间受力相互作用发生变形的过程,并确立相应的数值模拟方法。

Seepage flow and penetration control is an extremely important issue in embankment dam project,it directly related to the cost of the project and its safety.Many Failures of the hydraulic structures are resulted from seepage flow.This paper give a review on advancement of study on seepage quantity calculation,penetration deformation,infiltration control;numerical simulation and filtration erosion test at home and abroad and points out that future research should focus on the development of instrument which can measure the seepage coefficient,the critical hydraulic gradient in horizontal and vertical direction for wide-graded materials under surrounding pressure condition,and carry out corresponding theoretical analysis;the model for infiltration analysis should be established to analyze deformation process of dam body by interaction force of granular particles,and then develop corresponding numerical simulation methods.