Patent ID: 6402963
Filing Date: 2002-06-11
Classification: B01D,E02B,E02D

Abstract:
A draining wall including a plurality of panels filled with a granular filtering material and separated from each other by intermediate elements cast in the ground, and a member, embedded in the lower part of each intermediate element, enabling communication to be established between the panels of each pair of adjacent panels said wall further including auxiliary devices applied into contact with the end faces of said intermediate elements so as to cover the mouths of said communication-enabling members, wherein each auxiliary device is open on the side applied against said intermediate element, has a height greater than the diameter of said mouth, delimits a volume around said mouth, and has one or the other of the following features:a) it has over at least a part of its surface perforations whose size is smaller than that of the granules constituting said filtering material, or b) it has an opening to which a perforated pipe acting as a receiver is connected.