Hydraulic calculation of a water discharge system for protecting construction pits and foundations from flooding

Abstract

The groundwater level above the design pit bottom mark, together with surface runoff, create many negative conditions both during construction and operation. The article discusses the mechanism for protecting construction pits and foundations from flooding using irrigation systems. It is noted that when performing hydraulic calculations of irrigation systems, it is necessary to take into account the fact that surface runoff water carries a mass of solid particles. The calculation method takes into account the mass of these solid particles only from the point of view of abrasiveness. The work calculates the external pumping network and operating parameters of the hydrotransport system taking into account the characteristics of the selected pump based on data from regulatory, reference, advisory and scientific sources. (Q, H, N, h) Calculation formulas when working with hydraulic mixture.