CALCULATION MODEL AND EXPERIMENTAL STUDY ON SEDIMENT EROSION OF SLOPE UNDER EXTERNAL-SOIL SPRAY SEEDING
DOI:
https://doi.org/10.14311/CEJ.2019.02.0014Keywords:
External-soil spray seeding, Slope erosion, Energy method. Model testAbstract
Due to the current lack of theoretical study on rain erosion of the slope under external-soil spray seeding, the calculation model applicable to slope sediment erosion under external-soil spray seeding was derived from hydraulics theory and energy method. Designed slope scouring test on indoor model, conducted 3 separate scouring tests under 3 different slope rates (1:0.75, 1:1, 1:1.25) and 3 different rainfall intensities (120, 150, 180mm/h). The rationality of the calculation model was verified by the experimental data. Meanwhile, also analysed the developing regularities of slope erosion and relationship among sediment erosion, rainfall duration, rainfall intensity and slope rate. The results show that the relative error between the theoretical value and measured data is within 18%, and the calculation model can accurately predict the sediment erosion of the slope under external-soil spray seeding to some extent; the slope under external-soil spray seeding is lack of erosion resistant ability, and the slope erosion is mainly rill erosion and layered surface erosion; the amount of sediment erosion is positively correlated with rainfall intensity and slope rate. The relationship between growth rate and rainfall duration basically remained the same during the first 20 minutes, and then gradually decreased.
Downloads
References
Hongrong C., 1997. The Grass Planting Technology for Highway Slope Lawn and Its Function in Slope Protection. Rural Eco-environment, 1.
Chen X.P., Jiang Y.L., Song Z.Q., 2007. The Use of Hydroseeding Technology for Side Slope Revegetation on Loess Plateau. Research of Soil and Water Conservation, 84(1),266-269.
Li Y.Q., Wang X.R., 2017. Construction Technology of Slope Greening and Guest Soil Spraying. West-china Exploration Engineering, (10),1-4.
Jiang Y., Yan T., Wei G.U., Liu B., Yu H.L., 2007. Assessment on Vegetation Restoration by Soil Spray Seeding Technique on Road Verge Slopes of Expressway. Journal of Highway and Transportation Research and Development, 24(7),147-152.
Vargas-Luna A.E.S., Crosato A., Uijttewaal W.S., 2015. Effects of vegetation on flow and sediment transport: comparative analyses and validation of predicting models. Earth Surface Processes and Landforms, 40(2),157-176.
Wang Y.M., Li Q.Z., Zhang L.J., 2009. Test on Soil Spray-Sowing for Subgrade Slope Scour Protection Of Expressway. Subgrade Engineering, (06):15-17.
Horton R.E.,1945. Erosional development of streams and their drainage basins; hydrophysical approach to quantitative morphology. Geological society of America bulletin, 56(3),275-370.
Ministry of Transport of the People's Republic, 2012. JTG/T D33-2012 Highway drainage design code 88 pp.
Jakeman A.J., Hornberger G.M., 1993. How much complexity is warranted in a rainfall‐runoff model?. Water Resources Research, 29(8),2637-2649.
Chai G.H., Chai W., 2010. Analysis of Runoff Capacity on Surface of Highway Slope during Construction. Technology of Highway and Transport, (1):6-7, 11.
Gholami V., Booij M.J., Nikzad T.E., 2018. Spatial soil erosion estimation using an artificial neural network (ANN) and field plot data. Catena, 163,210-218.
Lagos-Avid., María Paz., Carlos A., Bonilla., 2017. Predicting the particle size distribution of eroded sediment using artificial neural networks. Science of the Total Environment, 581,833-839.
Wu B., Wang Z., Zhang Q., 2018. Evaluation of shear stress and unit stream power to determine the sediment transport capacity of loess materials on different slopes. Journal of Soils and Sediments, 18(1),116-127.
Li Z.G., Zhang X.Y., 2005. A energy-based erosion calculation model of the slopes for civil ergineering structures. China Civil Engineering Journal, 38(6),122-124, 136.
Li F., Wu F.B., Wu J.T., 2016. Erosion Quantity Calculation and Experimental Study of Sandy Slope. Journal of Wuhan University of Technology(Transportation Science & Engineering), 40(2),289-292.
Kavka P., Strouhal L., Jachymova B., 2018. Double size fulljet field rainfall simulator for complex interrill and rill erosion studies. The Civil Engineering Journal, (2),183-194.
Meyer L.D., 2017. Rainfall simulators for soil erosion research. Soil erosion research methods. Routledge, 83-104.
Lassu T.A.S., Seeger M., Peters P., 2015. The Wageningen rainfall simulator: Set-up and calibration of an indoor nozzle-type rainfall simulator for soil erosion studies. Land degradation development, 26(6),604-612.
Lora M., Camporese M., Salandin P., 2016. Design and performance of a nozzle-type rainfall simulator for landslide triggering experiments. Catena, 140,77-89.
Ministry of Housing and Urban-Rural Development of the People's Republic of China, 2016. GB 50014-2006Outdoor drainage design specification 258pp.
Owoputi L.O., Stolte W.J., 1995. Soil detachment in the physically based soil erosion process: a review. Transactions of the ASAE (USA).
Govindaraju R.S., Kavvas M.L., 1991. Modeling the erosion process over steep slopes: approximate analytical solutions. Journal of Hydrology, 127(1-4),279-305.
Downloads
Published
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
