The Effect of Floodwater on Slope Disturbance

Complete text of the article:

Download article (pdf, 0.4MB )

UDС

625.7/.8

DOI:

10.17238/issn0536-1036.2018.2.70

Abstract

Truck haul roads can be considered as one of the most important element of the timber in-dustry complex, since the bulk of harvested wood is transported by road. To ensure the ef-fective operation of logging enterprises under modern conditions, the specialists should en-tirely construct truck haul roads, which is complicated by a number of reasons. The key problem is slope disturbance under the influence of unfavorable natural environment and climatic factors. In perspective regions rich in forest resources, this problem is expressed mainly in frequent floods and mudflows, which negatively affects the strength characteris-tics of forestry roads. Therefore, the design and construction of new ways of timber trans-porting in a waterlogged environment requires increased reliability of project structures and new alternative roadbed safety methods. Known methods and means for roadbed reinforcing in the form of various protective coatings at the fill depth of less than 1.5 m in flood condi-tions are not effective. The water flow damages the slopes at a speed of 0.8 m/s, which is proved by the mathematical modeling in the FlowVision environment. The goal of research is to develop a methodology for calculating the reaction of a slope to the liquid flow. The hydrodynamic drag force is one of the main reasons for the deformation of the surface of the slope protective structures under the waterlogging conditions. It increases with a speed of the water flow. The definition of this parameter for motor roads in regions with frequent floods allows taking into account, minimizing the degree of road havoc and selecting a more effective design of slope protection.

Authors

Yu.A. Makarova, Postgraduate Student
A.Yu. Manukovskiy, Doctor of Engineering Sciences, Professor

Affiliation

Voronezh State University of Forestry and Technologies named after G.F. Morozov, ul. Timiryazeva, 8, Voronezh, 394087, Russian Federation; e-mail: juliamja@mail.ru, mayu1964@mail.ru

Keywords

waterlogging, road havoe, flood, slope, water flow, hydrodynamic resistance, equation

For citation

Makarova Yu.A., Manukovskiy A.Yu. The Effect of Floodwater on Slope Dis-turbance. Lesnoy zhurnal [Forestry journal], 2018, no. 2, pp. 70–76. DOI: 10.17238/issn0536-1036.2018.2.70

References

1. Avtomobil'nye dorogi. Zashchita otkosov avtomobil'nykh dorog ot razmyva [Highways. Protection of Road Slopes from Erosion]. Moscow, Rosavtodor Publ., 1992. 84 p. (In Russ.)
2. Evgen'ev I.E., Kazarnovskiy V.D. Zemlyanoe polotno avtomobil'nykh dorog na slabykh gruntakh [Earth Roadbed on Soft Grounds]. Moscow, Transport Publ., 1976. 270 p. (In Russ.)
3. Makarova Yu.A., Manukovskiy A.Yu. Modelirovanie vozdeystviya pavodkov i se-ley na zemlyanoe polotno lesovoznoy avtomobil'noy dorogi [Flood and Mudflow Modeling on the Roadbed of the Forest Road]. Materialy Vserossiyskoy studencheskoy konf. «Inzhe-nernye kadry – budushchee innovatsionnoy ekonomiki Rossii», Yoshkar-Ola, 23–28 noy-abrya 2015 g. Ch. 5. Innovatsii v stroitel'stve, prirodoobustroystve i tekhnosfernoy be-zopasnosti [Proc. All-Russ. Student Conf. “Engineering Specialists ‒ the Future of the Inno-vative Economy of Russia", Yoshkar-Ola, November 23‒28, 2015. Part 5. Innovations in Construction, Environmental Engineering and Technosphere Safety]. Yoshkar-Ola, VSUT Publ., 2015, pp. 115–117. (In Russ.)
4. Garkin A.S., Korenyuk I.Yu., Kazachinskaya S.A., eds. Navodnenie-2013 [Flood-2013]. Talakan, 2014. 144 p. (In Russ.)
5. Pershin M.N., Kulizhnikov A.M., Radov V.P. Dorozhnoe gruntovedenie [Road Soil Science]. Saint Petersburg, SPbSUACE Publ., 1998. 153 p. (In Russ.)
6. Savel'ev V.V. Melioratsiya lesosplavnykh putey i gidrotekhnicheskie sooruzheniya [Floating Route Melioration and Hydraulic Structures]. Moscow, Lesnaya promyshlennost' Publ., 1982. 280 p. (In Russ.)
7. Sushkov S.I., Sergeev A.S. Algoritm obrazovaniya treshchin na pokrytii lesovoz-nykh dorog, ustraivaemykh na sklone, v osnovanii kotorykh zalegaet glinistyy grunt [The Algorithm of Formation of Cracks on the Logging Roads Surface Arranged on the Slope, Overlain by Clayey Soil at the Base]. Lesotekhnicheskiy zhurnal [Forestry Engineering Journal], 2017, vol. 7, no. 1(25), pp. 118–126.
8. Bednarouk S., Ovcharov E. Flood Prevention and Protection in Russia. United Na-tion. Seminar on Flood Prevention and Protection. Berlin, 7–8 October 1999. Berlin, 1999, no. 37, pp. 1–4.
9. Kief O., Schar Y., Pokharel S.K. High-Modulus Geocells for Sustainable Highway Infrastructure. Indian Geotechnical Journal, 2015, vol. 45, iss. 4, pp. 389–400.
10. Meyer N. Determination of the Bearing Capacity of Geocell Reinforced Soil over Soft Subgrade with Static and Dynamic Plate Load Tests. Clausthal-Zellerfeld, Germany, Institute of Geotechnical Engineering and Mine Surveying, TU Clausthal, 2007.

Received on December 15, 2017