Purpose: to determine the roughness coefficient of a protective coating consisting of Enkamat 7225 geomat filled with small crushed stone from 6 to 10 mm and soil seeded with perennial ryegrass.
Materials and methods. The hydraulic studies conducted by the authors were aimed at determining the roughness coefficient of the studied coating made of composite material (geomat). This study was carried out on an experimental setup of trapezoidal cross-section with vertical right (m = 0) and inclined left (m = 1) slopes. The total length of the section with the coating was 8.6 m. The slope of the flume bottom was i = 0.010...0.03.
Results. The article presents the results of experimental studies devoted to determining the roughness coefficient of a composite coating made of geomat filled with crushed stone and reinforced with ryegrass. The average value of the roughness coefficient is derived and the analysis of the obtained results is performed. Based on the analysis conducted and after calculating the roughness coefficients by three formulas: Manning, Gangulyer-Kutter and N. N. Pavlovsky, it is possible to recommend for the studied coating the value of the roughness coefficient n = 0.0301, calculated using the Manning formula.
Conclusions. The conducted studies, which are devoted to the roughness coefficient assessment for the investigated anti-erosion protective coating, have shown the possibilities of using such lining in practice. The use of this coating gives a natural look without losing the protective properties to the soil structure slope, the watercourse bed and banks.
doi: 10.31774/2712-9357-2024-14-4-403-417
coastal protection, anti-erosion coating, geomat, water erosion, grass seeding, roughness coefficient, hydraulic resistance
Khanov N. V., Zhukova T. Yu., Alekseev D. A. Laboratory studies of a composite geomat coating filled with crushed stone and reinforced with ryegrass. Land Reclamation and Hydraulic Engineering. 2024;14(4):403–417. (In Russ.). https://doi.org/10.31774/2712-9357-2024-14-4-403-417.
1. Khomchenko Yu.V., 2014. Ustoychivost' otkosov i sklonov, ukreplennykh geotekstil'nymi materialami [Stability of slopes and hillsides reinforced with geotextile materials]. Vestnik Polotskogo gosudarstvennogo universiteta [Bulletin of Polotsk State University], no. 16, pp. 54-59, EDN: TQISZD. (In Russian).
2. Allyamov R.R., Nikiforova E.N., Maksimov A.A., 2017. O primenenii geotekstilya dlya protivofil'tratsionnoy zashchity kanalov i vodoemov [On application of geotextiles for impervious protection of canals and reservoirs]. Fizika voloknistykh materialov: struktura, svoystva, naukoemkie tekhnologii i materialy [Physics of Fibrous Materials: Structure, Properties, High-Tech Technologies and Materials], no. 1, pp. 377-380, EDN: ZREDKZ. (In Russian).
3. Guryev A.P., Kozlov D.V., Khanov N.V., Fartukov V.A., Novichenko A.I., Shchukin S.N., 2015. Gidravlicheskie issledovaniya protivoerozionnogo pokrytiya – geomata marki Enkamat A20 [Hydraulic studies of anti-erosion coating – geomat brand Enkamat A20]. Doklady TSKhA: sb. st. [Reports of Timiryazev Agricultural Academy: collection of articles]. Moscow, Green Era 2 Publ., iss. 287, vol. 2, pt. 1, pp. 358-363, EDN: YJQSSM. (In Russian).
4. Vendilo A.G., Kvasyuk A.V., Bessarabov A.M., Kovaleva N.E., Gafitulin M.Yu., Stoyanov O.V., Zaikov G.E., 2014. Sistemnyy analiz innovatsionnogo razvitiya khimicheskikh predpriyatii, vypuskayushchikh geosinteticheskie materialy [The system analysis methodology for the innovative development of the chemical enterprises of geosynthetic materials]. Vestnik Kazanskogo tekhnologicheskogo universiteta [Bulletin of Kazan Technological University], no. 8, pp. 366-371, EDN: SEMNST. (In Russian).
5. Krivitsky S.V., Fedotova O.A., Yakubovskaya I.O., 2017. Ekobionika: bioinzhenernaya zashchita berega vodoema [Ecobionics: bioengineering protection of the reservoir bank]. Fundamental'nye issledovaniya osnovnykh napravleniy tekhnicheskikh i fiziko-matematicheskikh nauk: sb. st. po itogam mezhdunarodnoy nauchno-prakticheskoy konferentsii [Fundamental Research in the Main Directions of Technical, Physical and Mathematical Sciences: Collection of Articles Based on the Results of the International Scientific-Practical Conference]. Sterlitamak, pp. 68-73, EDN: ZUTPRN. (In Russian).
6. Sviridova T.V., 2014. Primenenie geomembran dlya izolyatsii khranilishch promyshlennykh otkhodov [Application of geomembranes for insulation of industrial waste storage facilities]. Teoriya i tekhnologiya metallurgicheskogo proizvodstva [Theory and Technology of Metallurgical Production], no. 1(14), pp. 74-76, EDN: TNFEOJ. (In Russian).
7. Zhukova T.Y., Eremeev A.V., Khanov N.V., Shodiev B., 2023. Study of possibility application of anti-erosion coating – geomate with ground and sowing of permanent grasses. E3S Web Conferences, vol. 365, 04034, DOI: 10.1051/e3sconf/202336504034, EDN: EUTHXN.
8. Eremeev A.V., Guryev A.P., Khanov N.V., Bukreev V.P., 2018. Rezul'taty gidravlicheskikh issledovaniy geomata s zapolnitelem iz shchebnya na bitum-polimernom vyazhushchem [Results of geomat hydraulic researches with a crushed stone filler on the bitum-polimeric binder]. Prirodoobustroystvo [Environmental Engineering], no. 5, pp. 48-54, DOI: 10.26897/1997-6011/2018-5-48-54, EDN: AWLIYE. (In Russian).
9. Kozlov K.D., Guryev A.P., Kozlov D.V., Khanov N.V., 2016. Model'nye gidravlicheskie issledovaniya dlya opredeleniya koeffitsienta sherokhovatosti materiala Enkamat A20 [Model hydraulic studies to determine the roughness coefficient of the Enkamat A20 material]. Nauchnaya zhizn’ [Scientific Life], no. 1, pp. 6-12, EDN: VUCGMX. (In Russian).
10. Khatsuria R.M., 2005. Hydraulics of Spillways and Energy Dissipators. New York, Marcel Dekker, 649 p.
11. Kosichenko Yu.M., Baev O.A., 2014. Protivofil'tratsionnye pokrytiya iz geosinteticheskikh materialov [Impervious Cover of Geosynthetics]. Novocherkassk, RosNIIPM, 239 p., EDN: STCWZD. (In Russian).
12. Schneider V.A., Sirotyuk V.V., 2011. Novaya klassifikatsiya tipov ukrepleniya otkosov zemlyanogo polotna [New classification of strengthening slopes of the roadbed]. Vestnik Sibirskoy gosudarstvennoy avtomobil'no-dorozhnoy akademii [SibADI Bulletin], no. 3(21), pp. 24-28, EDN: PBIJLZ. (In Russian).
13. Schneider V.A., Yumashev V.A., 2014. Primenenie geomatov dlya snizheniya protsessov vodnoy erozii na otkosakh zemlyanogo polotna [The use of geomats to reduce the processes of water erosion on slopes of the roadbed]. Molodezh' i nauchno-tekhnicheskiy progress v dorozhnoy otrasli yuga Rossii: materialy VII Mezhdunar. nauch.-tekhn. konf. studentov, aspirantov i molodykh uchenykh [Youth and Scientific and Technological Progress in the Road Industry of the South of Russia: Proceedings of the VII International Scientific and Technical Conference of Students, Graduate Students and Young Scientists]. Volgograd, VolgGASU, pp. 21-27. (In Russian).
14. Eremeev A.V., 2017. Perspektivy primeneniya geomata s zapolnitelem iz shchebnya s bitum-polimernym vyazhushchim v gidrotekhnicheskom stroitel'stve [Prospects for the use of geomat with crushed stone filler with bitum-polymer binder in hydraulic engineering construction]. Materialy Mezhdunarodnoy nauchnoy konferentsii molodykh uchenykh i spetsialistov, posvyashchennoy 100-letiyu I. S. Shatilova [Proceedings of the International Scientific Conference of the Young Scientists and Specialists Dedicated to the 100 Anniversary of I. S. Shatilov]. Moscow, RGAU-MSHA Publ., pp. 324-325, EDN: YXQXBZ. (In Russian).
15. Eremeev A.V., 2018. Issledovanie fil'tratsionnykh kharakteristik v tonkoy protivoerozionnoy zashchitnoy odezhde otkosa [Research of filtration characteristics in thin anti-erosion protective clothing of a slope]. Materialy Mezhdunarodnoy nauchnoy konferentsii molodykh uchenykh i spetsialistov, posvyashchennoy 150-letiyu so dnya rozhdeniya V. P. Goryachkina [Proceedings of the International Scientific Conference of Young Scientists and Specialists Dedicated to the 150 Anniversary of the Birth of V. P. Goryachkin]. Moscow, RGAU-MSHA Publ., pp. 664-667, EDN: XYFRCH. (In Russian).
16. Schneider V.A., Sirotyuk V.V., Troyan T.P., Mosur E.Yu., 2015. Opredelenie koeffitsienta sherokhovatosti geomatov [Determination of the geomats roughness coefficient]. Vestnik Sibirskoy gosudarstvennoy avtomobil'no-dorozhnoy akademii [SibADI Bulletin], no. 1, pp. 73-79, EDN: TKOZVF. (In Russian).
