METHOD FOR IDENTIFYING THE LOCATION OF THE SOURCE AND FILTRATION PATHS ON A GROUND HYDROTECHNICAL STRUCTURE Russian patent published in 2021 - IPC E02B7/06 

FIELD: hydraulic engineering.

SUBSTANCE: invention relates to the field of hydraulic engineering and can be used to identify the source of filtration and the direction of filtration in the study of the state of underground hydraulic structures, such as staunches, dams, etc., based on the analysis of the isotopic composition of water. The method includes detecting water occurrence 1, identifying the location of the filtration source by installing a water intake well 8 near an underground hydraulic structure, installed on an underground aquifer 13 with an isotopic composition of water different from the isotopic composition of water in the reservoir 9 in the upper reaches, and equipped with a flow meter 6 and a shut-off valve 7, from which water is supplied from the underground aquifer 13 through the main collector 5 and distribution pipelines 10 laid along virtual test sites 12 with a width of 4 to 10 m. Then, in the lower stream 2, at selected control points in the water manifestation 1, piezometers, inspection drainage wells, surface reservoir 15, water samples are taken for subsequent studies in laboratory conditions with a comparative assessment of the isotopic composition of water, with the construction of isolines of equal values of the isotopic composition and the determination of the supply area 11, distribution paths and parameters of the filtration flow of non-project filtration, after identifying the location of the supply area 11 of the water manifestation 1 and non-project filtration paths, the main collector 5, distribution pipelines 10 are dismantled, the water intake well 8 is dismantled and tamped.

EFFECT: invention provides a reduction in costs when eliminating the filtration source and restoring the filtration strength of an underground hydraulic structure by using simple measuring instruments (flow meter, water sampling for laboratory analysis of one component) to determine the filtration source and its direction in the body of an earth hydraulic structure from the position of assessing its genetic type, with an accuracy of up to 4 m, without affecting the operation mode of an underground hydraulic structure in the form of drilling wells in the body of an earth hydraulic structure, it also makes it possible to identify the location of the source and filtration routes on an earth hydraulic structure with a similar chemical composition of all waters involved in the filtration process (surface, underground, reservoirs), while there is no impact of artificial indicators on the natural environment and the natural chemical background of waters is preserved.

1 cl, 2 dwg