SLOPING LAND IRRIGATION SYSTEM Russian patent published in 2004 - IPC

FIELD: agricultural engineering. SUBSTANCE: irrigation system has sewage water and pure water pipelines, mechanical purification constructions, water accumulating pond, sloped land with irrigation constructions defined by longitudinal ridges profiled for suitable passage of agricultural machines, distributors and irrigators with water outlets for supplying of irrigation water to irrigation constructions, troughs free of slopes and profiled for suitable passage of agricultural machines, ditch formed on uphill, automatic pumping station arranged on reserve platform and equipped with pressure pipeline for pumping out of rain water into water accumulating pond. Irrigation channel with slope of from 0.02 to 0.08 has slants with laying coefficient m=4-5 and constructional depth H_con = 0,5÷0,7 m.. Irrigation channel bed has width B=0.5-1.0 m and slant i=0.00005-0.0001 in longitudinal direction. Water outlet sills are arranged at single mark line. Dam ridge is positioned at single horizontal level for providing irrigation channel water depth h of 0.2-0.4 m at water flow rate Q=0.05-0.15 cu.m/s. Such construction allows efficiency of irrigated land occupied by irrigation channel bed for grass mowing with the use of hay-making machines to be increased by 3%. EFFECT: increased efficiency and reduced constructional costs of irrigation system owing to eliminating necessity of building affluent constructions. 4 dwg