| 摘要 |
1. A flexible geotextile coat, shaped as a three-dimensional roller of a nearly cylindrical cross-section, manufactured from a water-pervious geotextile, by means of sewing together one or more pieces to create a roller closed on both ends, characterized in that inside, along the symmetry axis of the highest-located generatrix of the roller (1), a hose is located and attached by means of sewing and with clamps (2), whereas that hose is flexible and impervious to water, whereas the hose outlet is located inside the coat close to one of the caps (3), and the other end is located outside the roller (1) through the other cap (5), whereas the pipe (3) consists of a number of segments, preferably of the same length each, whereas the segments are sewn to each other by means of an easily disjoinable single-thread stitch (7), whereas one end of the thread (8) is located outside the roller (1).<IMAGE>
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