| 摘要 |
FIELD: construction. ^ SUBSTANCE: structure of seasonal waterway on permafrost comprises dam, which blocks riverbed and talik of waterway, water channel arranged as bypassing protected mountain object, having foot below riverbed bottom, and low-flow water conduit, which provides for passage of riverbed talik underground waters that are capable of ice crust formation within the limits of the structure in cold season of the year as bypassing mountain object. Dam is equipped with antifiltration device adjoining permafrost, in water channel bottom in supply channel and bottom plate of inlet head are arranged at the level or below riverbed bottom adjoined to them, height of cavity and value of bottom longitudinal inclination permanently provide for nonpressure mode of water flow at underground section of water tunnel, provided with lining, bottom and walls of which produce water-impermeable tray, and output head, by means of diversion channel, is coupled with waterway. Low-flow water conduit comprises influent chamber installed in filtering water collector, and flow cavity of low-flow water conduit is heat insulated, besides supply channel of water tunnel within the borders of permafrost is equipped with antifiltration coat, which directly at the border of riverbed talik is coupled with permafrost in a water-permeable manner. ^ EFFECT: invention provides for reliability of structure. ^ 12 cl, 7 dwg, 1 ex |
