The invention relates to a cellular module for making hydroelectric constructional works for protecting banks, shores or marine objectives. According to the invention, the module has the shape of the letter "Z", both on its length and on its width, and it consists of some cells () which communicate to one another on the vertical axis and on the horizontal axis, having inside some pillars () as well as some rigid flared connecting spurs () made of concrete, positioned at the upper and lower side, respectively, which are coupled inside some mounting holes () positioned at the lower side of the module.
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