Прогнозирование возможности продолжения эксплуатации самотечных сетей водоотведения с отложениями в лотковой части труб

Abstract

In this work, the formula for forecasting the continued operation of gravity drainage networks with deposits in pipe water troughs is deduced and refined. In the authors' opinion, such a forecast should be based on the hydraulic principle for assessing the efficiency of a network operation, as the most accurate. To this end, the concept associated with the efficiency of gravity drainage networks was introduced, and a criterion for its assessment was proposed. In the study, the characteristics of hydraulic potential for concrete pipes with a diameter of 400 mm were calculated as an example. An empirical formula was proposed for determining the efficiency factor of the gravity drainage network, and its deviation range was shown. It was concluded that the expert prognosis of continued operation of gravity drainage networks should be based on the efficiency factor of the network, calculated using the obtained formula. It is recommended that a method for calculating an efficiency factor describing gravity drainage networks and special tables for the hydraulic calculation of pipes having a sediment layer of different thicknesses be elaborated. The data presented in the article allow servicing of gravity drainage network to be improved by forecasting its continued operation using the efficiency factor К_ef.