Research into the pressureless flow in hydrotechnical systems at mining enterprises

Purpose. The research purpose is to develop a mathematical model of pressureless flow in channel with the occurrence some areas overflow layer through wall. Using this model, it possible calculate height and length, as well change rate due withdrawal part fluid result overflow. Methods. uses comprehensive multi-stage analytical approach. Firstly, order for wall, analytically determines dependence wall based on formulas calculating weir discharge coefficient. At second stage, hydraulic mixture rectangular an developed determine parameters regimes stream. Findings. dependences dimensionless effective critical depth current length have been obtained various values acting force process parameter This made study dynamics changes these along specified parameters, assess degree influence relevant factors characteristics Originality. For first time, generalized case when are not determined by hole side surface, but controlled decrease corresponding rate. makes cases overflowing condition stream under unstable non-calculated regimes. Practical implications. calculation results can be used ensure environmental safety logistics systems mining enterprises, volume pollution channels transportation waste from mineral processing metallurgical plants.