This work concerns the development of an empirical model for rapid assessment of the risk of erosion caused by rain or adverse weather, on bare ground. This model is built on influencing parameters such as rain intensity, slope, and cohesion of soil particles. To develop this model, the mini rain simulator produced by [1] was used. This simulator made it possible to multiply rain events by simulation, to assess the corresponding soil losses, and to draw up a table of the influencing parameters of erosion. A controlled compaction press was also used to materialize soil cohesion during data collection. The data collected were used to plot curves of average erosion evolution according to each parameter and to establish a correlation between the eroded soil masses and the different factors. The results obtained from the new MFEPE model (Exponential Erosion Potential Function Model) show that it is 78% compatible with the experimental results. The MFEPE model built here from sandy clay soils, then presents itself as a rapid means of assessing the risk of erosion of bare soils and gives the possiblilty to make extrapolations in situ. An application can be made in the dimensioning of earthen structures in the field of civil engineering, when we want to assess the risks of soil loss before investments.
NDZIE
Good innovations The erosion modelisation is the actual subject . Find a model of risk is vert important.
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