New Technological Scheme of Coal Pipelines for Large Hydraulic Coal Mines.

The projected coal pipelines to transport coal from large hydraulic mines to the consumers must have the capacity of 3000 m**3/h or more to ship coal to distances of 50-100 km with intermediate pumping stages, equipped with a parallel or mixed group of workers and reserve pumps at these stages. A new variant of such a coal pipeline with controlled hydroaccumulators (small intermediate reservoirs) at the pumping stages in the closed cycle and reverse pumping over one sector or the entire pipeline under emergency conditions is described.