FIELD: hydraulic engineering.
SUBSTANCE: invention relates to the field of hydraulic engineering. Purpose is prevention of flood during spring flood. Method includes construction on ice cover 2 at river banks 1 of water-protection device made in form of a pair of snow rolls 6 with formation of channel 5 for flood water flow between them. Channel 5 is formed at the middle of river bed 1 and tributaries all along the mouth. Snow cover 3 of ice cover 2 is removed by a pair of graders 7 moving in series and symmetrically to center of river bed 1 and tributaries. Snow shafts 6 on both sides of channel 5 are hardened by exposure to exhaust gases of motor graders 7 with subsequent natural freezing with formation on their surface of strong bed 11. At the place where river 1 enters water reservoir 12, for example, by blasting and removal of ice fragments, extensive wormwood 13 is formed to drain flood water into it.
EFFECT: technical result is prevention of flooding in river floodplain on its entire length and due to this introduction of agricultural lands to economic circulation and prevention of flooding of villages and cities.
4 cl, 3 dwg
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