Examinando por Materia "DESPRENDIMIENTOS DE TIERRA"
Mostrando 1 - 9 de 9
Resultados por página
Opciones de ordenación
Publicación Análisis comparativo de la estabilidad del terreno a partir de métodos determinísticos en la cabecera municipal de Armenia, Antioquia(Universidad EAFIT, 2022) Campo Correa, Joel David; Gamboa Ramírez, Marco FidelPublicación Comparación del comportamiento de la trayectoria de los deslizamientos entre modelos geométricos y empíricos para el mapeo de zonificación de amenaza por movimientos en masa de la vía Bolombolo – Amagá sector Sinifaná Km 57(Universidad EAFIT, 2022) Coronado Navarro, Adriana Carolina; Castañeda Gutiérrez Juan Pablo; Gamboa Ramírez, Marco FidelMass landslides are events that can cause the destruction of homes, loss of human life and affect traffic on a road. The study was carried out on the Bolombolo – Amaga road in the Sinifana sector at kilometer 57, leaving Southwest Antioquia cut off for 6 months. These events can reach long routes with high speeds that cause effects of this type. Several studies analyze displacement propagation using an empirical and geometric approach such as Flow R and Model T. These models have a great advantage since they are freely accessible and the input parameters are easy to obtain. A parametric study was carried out to select the variables that best fit each model, because the objective of the following project is to compare the models found for the determination of hazard zoning and behaviors of the trajectory generated by mass movement. The results obtained are validated by comparing them with the corresponding photo-interpretation carried out in the study area.Publicación Desastres de origen natural en Colombia 1979-2004(Universidad EAFIT, Observatorio Sismológico del Suroccidente, OSSO, 2005) Hermelin Arbaux, Michel; Hermelin Arbaux, MichelPublicación Evaluación crítica de los métodos de análisis para estabilidad de taludes en laderas naturales y las perspectivas de investigación(Universidad EAFIT, 2023) Córdoba Arias, José Alberto; Prieto Salazar, Jorge AlonsoPublicación Evaluación de la vulnerabilidad social por movimientos en masa y avenidas torrenciales en el corregimiento de San Cristóbal, Medellín(Universidad EAFIT, 2021) Londoño Torres, Nathali; Bedoya Sanmiguel, Geovany; Caballero Acosta, José HumbertoPublicación Evaluación de métodos heurísticos y estadísticos para zonificación de amenazas por movimientos en masa a escalas intermedias(Universidad EAFIT, 2021) Gamboa Ramírez, Marco Fidel; Bedoya Sanmiguel, Oscar GeovanyPublicación Modeling the generation and propagation of rain-triggered landslides(Universidad EAFIT, 2025) Rodríguez Díaz, Andrés Camilo; Ruiz Restrepo, Daniel FelipeSlope stability is of great importance when the associated hazard implies a risk of human and economic losses. When a morphodynamic process materializes, there is a possibility that it may evolve into a debris and mudflow, especially when the mobilized mass is large and the phenomenon occurs in mountainous or steeply sloping terrain, where the soil mass may be channeled through watercourses or low-lying areas of the landform. Currently, the numerical modeling of such landslide phenomena is mainly performed using limit equilibrium or finite element methods. However, these approaches present major limitations when dealing with large deformations. For example, the finite element method is constrained when oscillations between tensile and compressive stresses are generated. In addition, the discretized elements must remain connected; otherwise, the analysis fails to converge. This research proposes to model the initiation and propagation of a rain-induced, large-deformation landslide. The modeling is structured in two stages: i) simulation of transient rainfall and infiltration using FEM (Finite Element Method), to generate conditions where convergence cannot be reached before failure; ii) export of the FEM results, mainly pore pressures and stress states for each element, to serve as initial conditions in an MPM (Material Point Method) environment, where the movement of the failed mass is modeled according to the characteristics defined for an idealized slope representing natural conditions. To achieve this objective, a review of the numerical and constitutive bases of the methods was carried out, together with a survey of previous research on the numerical modeling of large-deformation landslides using the two approaches mentioned above. Subsequently, the geometry of an idealized slope was defined to allow predictive modeling. For this purpose, rainfall data and terrain parameters were selected from existing information for the Greater Medellín area and the Aburrá Valley in Colombia. For the rainfall input, thresholds defined by the Early Warning System of Medellín and the Aburrá Valley (SIATA), a local hazard and risk monitoring agency, were used. A rainfall threshold can be defined, in simplified terms, as the boundary between rainfall events that can potentially trigger mass movements, usually combining data on antecedent and triggering rainfall (90-day and 7-day windows in the SIATA case). For this study, three particular threshold scenarios were selected, producing three different combinations of antecedent and triggering rainfall. Finally, conclusions are drawn regarding the adaptation of the two-stage modeling approach for this type of landslide. The methodology takes advantage of the computational efficiency of FEM for simulating the initiation of mass movement, and of MPM for modeling the subsequent propagation of the soil mass across the topography. The study highlights the potential benefits for risk management of using low-cost basic information (rainfall thresholds) as an alternative to traditional and more expensive monitoring instruments such as inclinometers and piezometers.Publicación Sensitivity analysis of rainfall-induced shallow landslides using TRIGRS model. Case study : San Antonio de Prado, Medellín, Colombia(Universidad EAFIT, 2021) Osorio Rios, Leidy; Montoya Noguera, Silvana; Ramos Rivera, Johnatan; Montoya Noguera, Silvana; Ramos Rivera, JohnatanPublicación Zonificación de amenaza por movimientos en masa para el municipio de Támesis, en el área rural a escala 1:25.000 y en el área urbana a escala 1:2.000(Universidad EAFIT, 2015) Guisao Granda, Yadiris Andrea; Gamboa Ramírez, Marco Fidel