ASSESSMENT OF THE IMPACT OF RIVERBED QUARRIES ON THE HYDROLOGICAL CONDITIONS OF THE OB RIVER SECTIONS

Druzhinina Olga Vladimirovna, Nikitin Alexander Anatolyevich, Buchelnikov Mikhail Alexandrovich

The article discusses the impact of the development of riverbed and floodplain quarries on the hydroecological state of the floodplain and riverbeds (using the example of the Ob River). The purpose of the research was a preliminary assessment of existing developed and promising sand deposits in the upper and middle reaches of one of the largest Siberian rivers. Data on 17 sand deposits were collected and analyzed, for each of them the location was determined with reference to the mileage of pilot maps, mineral reserves, licensed and existing annual production volumes, as well as potentially possible measures (mainly the construction of compensating protective and other auxiliary structures), the implementation of which should prevent a change in the hydrological regime of the site the river where the field under development is located. It has been established that 8 of the 17 deposits have not been constructed, 4 are in the design stage, 1 can have only a slight positive effect, 3 have been partially erected and 1 have been completely erected. In the current situation, it seems very likely that a number of changes in the parameters of the riverbed and flow in places of sand extraction: decrease in water levels, change in the water content of the sleeves, erosion of the shores. In order to avoid negative consequences of the exploitation of deposits, it is necessary to complete the envisaged measures and determine the program of hydroecological observations.

Keywords:river sand, non-metallic minerals, Ob River, man-made impact, ecology, quarry, minerals