PROBABILISTIC ESTIMATION OF THROUGHPUT CAPACITIES OF CHANNELS IN THE FROM OF TRAPEZE

Abstract

The deterministic dependencies are analyzed for determining themain parameters of the channels, by which, their size and throughputare determined. The importance of the influence of the components of the Chezi equation on the magnitude of the trapezoidal channelthroughput is established. On the basis of the theoretical analysis ofregulatory tolerances on parameters in the construction ofhydromeliorative channels using probability theory and statisticalsimulation methods, analytical dependencies have been developed todetermine the confidence intervals of the throughput in channels anddepths. To determine the probable limits of changing the depths ofwater in the channels when passing the calculated costs Qr proposedto use graphs Qmin=f(hр); Qр=f(hр) та Qmax=f(hр). The obtainedmathematical model for estimating probabilistic limits of changes incosts and depths of water in channels of trapezoidal cross-sectionalshape allows to estimate the risk of flow of water from the channelbed and flooding part of the drainage system.