Diaphragm wall is a reinforced concrete wall that is implemented in situ. The diaphragm wall reduces the problems of deep excavations in the presence of high underground water level, fine-grained soil and the stability of the foundation of the structure in the vicinity of the pit. The diaphragm wall is dug in the soil with the help of a trench with a small thickness and the stability of the created trench is temporarily maintained by bentonite slurry until the concrete is replaced with the help of thermal pipe. The thickness of these types of walls usually varies between 500 and 1500 mm and depending on the drilling equipment, it can be applied up to a depth of 50 meters. Also, this technique is used in creating waterproof curtains in dams.



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