MECHANICAL ANALYSIS OF AN ALLUVIAL SLOPE OF ACCUMULATION OF SAND, SILT AND CLAY IN CHUCUITO - PUNO

Objective: to deepen the study of the fundamental aspects related to slope stability, performing a mechanical analysis of an alluvial slope with accumulations of sand, silt and clay; and analyzing the geotechnical factors that influence its behavior, as well as the evaluation methodologies and mitigation techniques that allow guaranteeing safety in its design. Methods: the quantitative, explanatory and application method was used together with the collection of laboratory analysis data for the determination of the slope stability analysis, the Bishop and Janbu Simplified analysis methods were also used for the determination of the most favorable and recommended result for the study. Results: the analysis of the slope of 72° inclination and an average height of 10m, was considered unstable due to the mechanical properties presented by the soil and in the real conditions analyzed: density 1.41 g/cm3, porosity 21.33%, specific weight 11.72KN/m3; I.P. 1.26%, this being a soil of coarse particles - gravel with the presence of silty to clayey sand of low plasticity and organic content. Analyzing these data on the slope, a circular break with an F.S. of 0.8 can be seen in a critical area of 5-8m. Conclusion: the slope studied presents a reducible instability under different conditions, in order to prevent possible future accidents related to its displacement, it was possible to model a stability with a method that does not represent a greater intervention than that of profiling the slope at an angle of inclination that presents a more stable F.S. (45–55°).