Purpose: to assess measures to reduce the canal sedimentation and, accordingly, reduce the volume of repair dredging by constructing protective structures, which are proposed to be used within the boundaries of permitted shallow-water dumps to protect the canal from bottom soil from the backbone space and to regulate the water flow into channel.
Materials and methods. The Volga-Caspian Sea Navigation Canal (VCSNC) plays the role of a connecting link and a single deep-water highway from the Caspian Sea to the Azov-Black Sea, Baltic and Northern basins through the ports of Olya and Astrakhan. Navigation in the canal continues throughout the year; in winter, ships are piloted with the support of icebreakers. The ship's passage in the river part of the canal passes along the Bakhtemir branch – a natural continuation of the river bed Volga within the delta of the river Volga. One of the main factors complicating the conditions for the normal operation of the VCSNC is its sedimentation, which is caused by the solid runoff of the Volga, surge, wind wave and ice phenomena. A different combination of these components entails bottom deformations and sediment deposition, which vary from year to year, both throughout the channel and in its individual sections. A possible measure to reduce the canal sedimentation and, accordingly, reduce the volume of repair dredging is the construction of protective structures, which are proposed to be used within the boundaries of permitted shallow dumps to protect the canal from being carried by bottom soil from the backwater and to regulate the water flow in the channel.
Results. Four options for constructive solutions for protective structures using geotubes and geobags in various combinations, with various options for preparing and constructing the central part of the dam were considered.
Conclusions: it is proposed to use structures using composite and traditional materials.
doi: 10.31774/2712-9357-2022-12-4-333-348
the Volga-Caspian Sea Navigation Canal, fluctuations in the level of the Caspian Sea, canal drift, protective dams, geotubes, geobags
Tkachev A. A., Klyuchenko K. I. Analysis of measures to combat the Volga-Caspian Canal sedimentation. Land Reclamation and Hydraulic Engineering. 2022;12(4):333–348. (In Russ.). https://doi.org/10.31774/2712-9357-2022-12-4-333-348.
1. Rusanov N.V., Bukharitsin P.I., Bezzubikov L.G., 2016. Volgo-Kaspiyskiy morskoy sudokhodnyy kanal – sovremennoe sostoyanie problemy i puti ikh resheniya [The Volga-Caspian sea navigable channel – a modern condition of the problem and way of their decision]. Mezhdunarodnyy zhurnal prikladnykh i fundamental'nykh issledovaniy [International Journal of Applied and Fundamental Research], no. 4-5, pp. 863-871. (In Russian).
2. Chalov R.S., 2016. Ruslovye protsessy (ruslovedenie): ucheb. posobie [Channel Processes (Channel Science): textbook]. Moscow, Infra-M Publ., 565 p. (In Russian).
3. Zheleznyakov G.V., 1981. Propusknaya sposobnost' rusel, kanalov i rek [Carrying Capacity of Canal and River Beds]. Leningrad, Gidrometeoizdat Publ., 310 p. (In Russian).
4. Bukharitsin P.I., Rusanov N.V., Bezzubikov L.G., 2016. Volgo-Kaspiyskiy sudokhodnyy kanal – ot starykh printsipov k novym ideyam. Kompleks meropriyatiy po uluchsheniyu funktsionirovaniya Volgo-Kaspiyskogo vodno-transportnogo uzla v tret'em tysyacheletii: monografiya [The Volga-Caspian Navigation Channel – from Old Principles to New Ideas. A Set of Measures to Improve the Operation of the Volga-Caspian Water Transport Hub in the Third Millennium: monograph]. LAP LAMBERT Academic Publ., 101 p. (In Russian).
5. Babich D.B., Ivanov V.V., Korotaev V.N., 2019. Volgo-Kaspiyskiy morskoy sudokhodnyy kanal i opredelyayushchie ego razvitie prirodnye i antropogennye faktory [The Volga-Caspian sea navigable channel and the natural and anthropogenic factors determining its development]. Sovremennye problemy gidrometeorologii i ustoychivogo razvitiya Rossiyskoy Federatsii: sb. tez. Vserossiyskoy nauchno-prakticheskoy konerentsiif [Modern Problems of Hydrometeorology and Sustainable Development of the Russian Federation: Proc. of the All-Russian Scientific-Practical Conference], pp. 188-190. (In Russian).
6. Usynina A.E., Svyatsky A.S., Boyarko S.G., 2020. Rekomendatsii po vosstanovleniyu vodnosti rybokhodnykh kanalov del'ty Volgi [Recommendations for restoring the water content of the fish passage channels of the Volga delta]. Inzhenerno-stroitel'nyy vestnik Prikaspiya [Engineering and Construction Bulletin of the Caspian Region], no. 2(32), pp. 78-82. (In Russian).
7. Baev O.A., Talalaeva V.F., 2022. [Design and technological solutions for irrigation canal coating formation and resurfacing]. Melioratsiya i gidrotekhnika, vol. 12, no. 2, pp. 177-191, available: http:www.rosniipm-sm.ru/article?n=1285 [accessed 01.08.2022], https:doi.org/10.31774/2712-9357-2022-12-2-177-191. (In Russian).
8. Kolganov A.V., Kosichenko Yu.M., Sklyarenko E.O., 2022. [Impervious canal linings using geosynthetic materials]. Melioratsiya i gidrotekhnika, vol. 12, no. 3, pp. 210-226, available: http:www.ros-niipm-sm.ru/article?n=1302 [accessed 01.08.2022], https:doi.org/10.31774/2712-9357-2022-12-3-210-226. (In Russian).
9. Baev O.A., Kosichenko M.Yu., 2021. [Large canals reconstruction and their efficiency assessment]. Melioratsiya i gidrotekhnika, vol. 11, no. 4, pp. 287-301, available: http:www.rosniipm-sm.ru/article?n=1250 [accessed 22.11.2021], DOI: 10.31774/2712-9357-2021-11-4-287-301. (In Russian).
10. Tkachev A.A., Slinko M.A., 2022. [Study of bank protection structures on the Kuma river in Stavropol Territory]. Melioratsiya i gidrotekhnika, vol. 12, no. 1, pp. 213-227, available: http:www.rosniipm-sm.ru/article?n=1269 [accessed 01.08.2022], https:doi.org/10.31774/2712-9357-2022-12-1-213-227. (In Russian).
11. Gao X., Makino H., Furusho M., 2017. Analysis of ship drifting in a narrow channel using Automatic Identification System (AIS) data. WMU Journal of Maritime Affairs, vol. 16, pp. 351-363, DOI: 10.1007/s13437-016-0115-7.
12. Montagna P., Gibeaut J., Dotson M., Douglas A., Magolan J., Palacios J., Rener L., Subedee M., Trevino K., 2021. Evaluation of the Proposal for Widening and Deepening the Matagorda Ship Channel. Poth, Texas, 63 p.
