CHANNEL DEFORMATIONS FORECAST AND FEATURES OF FLOODPLAIN QUARRIES OF NON-METALLIC CONSTRUCTION MATERIALS DEVELOPMENT IN MEANDERING RIVERBEDS BASED ON SAFE NAVIGATION CONDITIONS (ON THE EXAMPLE OF THE BELAYA RIVER)

Abstract

Floodplain quarries of non-metallic construction materials (NCM) have a minimal impact on the water regime and navigable conditions of the reservoir in the area of their location. However, the development of such deposits has its own characteristics, especially in case of their location in meandering beds of large navigable rivers. On the example of floodplain quarry located at the mouth of the Belaya river (1757-1763 km), development conditions for such facilities based on ensuring navigation safety were considered; on the basis of changes’ dynamics in the bends’ main parameters the channel state assessment and fluvial deformations forecast were made. It was concluded that it is possible to extract sand and gravel in the studied section of the Belaya river, provided that navigation safety issues are resolved in a comprehensive manner. First of all, it refers to meander straightening and transferring the ship's course to a new capital slot.