Grouting for Dam Foundation Improvement

Grouting is a very common way to seal rock and repair concrete structures (Turkmen, 2003; Butron et al., 2010; Hoien and Nilsen, 2013; Lim et al., 2013; Bras et al. , 2013), many of them apply to dam fundamental improvement projects. Example (Yang, 2004; Rafi, 2010; Saeidi et al., 2013). Determining injection requirements is a big problem in dam basing. A useful model for predicting treatment limits meets two criteria. The model must be able to predict low water level (WPT) and low cement slurry (CT).

(Ii) Fundamentals of Dam Construction - Dams are usually built on the foundations of earth or hard rock and use different foundations depending on the type of dam and the type of terrain surrounding it. The foundation should have sufficient strength to maintain and maintain the dam weight, structure, and water pressure acting on the dam wall. The foundation of the dam usually needs to be below the ground of the dam. In order to make basic soft ground, it is necessary to excavate, excavate, or remove it by spraying rocks with explosives.

The foundation of the dam site is reinforced with grouting that is called a grouting curtain. The cave was driven into the wall and bottom of the canyon, reached a depth of 150 feet (46 m) of the rock and the hole encountered was buried with grout. This is done to stabilize the rock, to prevent water from penetrating the dam through the rocks of the canyon and to limit the "collision" pressure of infiltration under the dam. With the start of concrete pouring, workers continued to move forward without resolving the problem when they encountered hard time constraints and encountered hot springs or cavities that were too large to easily fill. A total of 58 393 holes are not completely filled. After the dam was completed, the lake began to fill up, flowed into the dam into a large amount of dam, which led to the investigation by the landfill station. Drill new hole from dam inspection gallery to surrounding rock