What is the function of a cut-off wall in civil engineering?

The cut-off wall is a crucial element in civil engineering, particularly in projects involving water management and control of soil saturation. Its primary function is to prevent water movement through soil layers, which is essential for maintaining the integrity of various structures and the surrounding environment.

When water is allowed to move freely through soil, it can lead to erosion, loss of structural support, and reduced effectiveness of foundations. By creating a barrier that impedes water flow, cut-off walls help to manage groundwater levels and reduce the risk of seepage that could undermine foundations or cause other structural issues.

In contexts such as dams, levees, and excavations, the effective use of a cut-off wall can significantly enhance the stability of the structure and surrounding land. It provides a protective measure that ensures that the intended water control and soil stability are maintained, ultimately safeguarding the investment in civil engineering projects.