A regulatory structure (also a straightening structure ) is a hydraulic structure designed to “ regulate ” ( correct the shape and water regime) of a river channel in order to protect it from flooding or provide navigation .
Regulatory structures can be longitudinal (located along the channel, for example, the enclosing shaft ), transverse (for example, the dam ) and combined. Continuous structures block the entire flow of water, through - pass part of the flow, thereby redistributing the flow of water (and with it the flow velocity and the amount of sediment ) over the cross section of the channel.
Long-term constructions of a heavy type (for example, dams ) are capital constructions and must withstand destruction from water and ice, as well as deformations of the base; during their construction, stone sketches, mattress masonry , fascines , pile and masonry structures, soil with stone or fascia lining are used.
Light regulatory structures are used on small rivers and are often temporary; they are carried out in the form of wickers and curtains of brushwood , barriers from branches, unpaved embankments.
Literature
- Regulatory structures // Motherwort - Rumcherod. - M .: Great Russian Encyclopedia, 2015. - P. 318. - ( Great Russian Encyclopedia : [in 35 vols.] / Ch. Ed. Yu. S. Osipov ; 2004—2017, vol. 28). - ISBN 978-5-85270-365-1 .
- Regulatory structures - an article from the Great Soviet Encyclopedia .