Oqdaryo suv ombori to’g’onidagi filtratsiya suvlarining inshootlarga agressiv tasiri.

A  Yangiev; F Gapparov; D Adjimuratov; Sh Yaxshiyev; L To’xtamuradov

doi:10.35938/IM-2026-12-00010

Vol. 12 No. 2 (2026): April - June

99-109

2026-09-10

Open Access

https://doi.org/10.35938/IM-2026-12-00010

Received: 2026-09-10

Published: 2026-09-10

Abstract

This article presents the results of field investigations conducted to determine the chemical
composition and turbidity level of water in the piezometers installed within the embankment body of
the Oqdaryo Reservoir dam. Samples collected to determine the chemical composition and turbidity
levels of water in the piezometers were analyzed under laboratory conditions. The analysis revealed
a gradual decrease in the concentrations of chemical elements in the piezometer water from the
piezometers located on the upstream slope toward those installed on the downstream slope of the
dam. The highest turbidity level was observed in the reservoir basin, while a gradual decrease in
turbidity was recorded from the piezometers located on the upstream slope toward those installed
on the downstream slope of the dam. Therefore, the extremely low turbidity levels recorded in the
piezometers suggest that no suffusion processes are occurring within the dam embankment or the
filter sections of the piezometers. This study aims to investigate the seepage with different quality
characteristics through the dam embankment, evaluate changes in reservoir water quality caused by
water exchange processes, and determine the variations in the chemical composition and turbidity of
seepage water within the dam body. Materials and Methods. Field investigations were conducted
at the Oqdaryo Reservoir located in Kattaqurgan District, Samarkand Region, Uzbekistan. The
study employed existing field monitoring observations, as well as laboratory analysis methods to
determine variations in the chemical composition and turbidity of seepage (filtration) within the
dam. The obtained data were used to assess the characteristics of filtration processes occurring
in the dam embankment. In the operation of reservoirs, it is essential to assess changes affecting
the strength and stability of hydraulic structures and to ensure their structural integrity and safe
performance. Within the scope of this study, field observations and investigations were carried out to
identify solutions to the aforementioned problems and to accomplish the research objectives. The
main findings of the study indicate a gradual decrease in the concentrations of chemical elements in
the piezometer water from the piezometers located on the upstream slope to those situated on the
downstream slope of the dam. The highest turbidity level was observed in the reservoir basin, while
turbidity gradually decreased from the upstream piezometers toward the downstream piezometers.
Therefore, the very low turbidity levels recorded in the piezometers suggest the absence of suffusion
processes within the dam embankment and the filter sections of the piezometers. These findings
indicate that the filtration regime of the dam remains stable and does not currently pose a threat to
the structural safety of the reservoir. Based on the visual and instrumental monitoring conducted
at the Oqdaryo Reservoir, including investigations of the dam’s structural condition and internal
voids using ground-penetrating radar (GPR), as well as the assessment of the aggressiveness of
seepage water toward the structures within the dam body, the following conclusions can be drawn.
Evaluating the aggressiveness of seepage flow within the dam embankment requires a thorough
understanding of the seepage water movement patterns through the dam body and its interaction with
the structural elements of the dam. Such knowledge is essential for ensuring the stability, reliability,
and long-term safety of the reservoir dam and its associated structures. The results obtained indicate
that continuous monitoring of seepage characteristics and water quality parameters plays a crucial
role in maintaining the structural integrity and operational safety of the reservoir.

Keywords

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