METHOD TO ERECT SPILLWAY CHANNEL OF POLYGONAL PROFILE WITH FLEXIBLE FIXATION Russian patent published in 2014 - IPC E02B5/00 E02B8/06 

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering, namely, to channels used in water-engineering systems and irrigation systems as open spillway structures. The method includes erection of a channel of polygonal profile with two pairs of symmetrical slopes and a triangular base. Reinforced concrete anchor beams 1 are laid into a single longitudinal row along the top of the triangular base. At the left and right to these beams they fix gabion mats 2, laid across the riverbed along the line of bottom slopes m₂. Gabion mats 2 are made of light fascines and perforated pipes laid in layers into a metal net. Along the line of side slopes m₁ in tight rows they lay flexible mats 3, made from light fascines, wrapped into a geonet of tubular shape. Gabion 2 and flexible 3 mats are tied to each other with the help of a metal wire and in some points are attached to slopes of the channel with the help of reinforcement rods 4. The method may be most efficiently used in low-head dam and dam-free water-engineering systems, and also a manifold irrigation network in piedmont and mountain hard-to-access areas.

EFFECT: channel of polygonal profile, erected by the proposed method, turns into a reliable spillway or coupling structure of open type, designed for safe passage or discharge of maximum possible water flows.

5 dwg