Effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models
This paper presents experimental results obtained from silty sand slope models subjected to an artificial rainfall. Four models were constructed to evaluate the effect of initial water content and rainfall intensity on the hydraulic behavior and failure mechanisms of the slopes. The models were inst...
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| Format: | Online |
| Language: | eng |
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Universidad Pedagógica y Tecnológica de Colombia
2016
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| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5302 |
| _version_ | 1801706075525742592 |
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| author | Montoya-Domínguez, Juan David García-Aristizábal, Edwin Fabián Vega-Posada, Carlos Alberto |
| author_facet | Montoya-Domínguez, Juan David García-Aristizábal, Edwin Fabián Vega-Posada, Carlos Alberto |
| author_sort | Montoya-Domínguez, Juan David |
| collection | OJS |
| description | This paper presents experimental results obtained from silty sand slope models subjected to an artificial rainfall. Four models were constructed to evaluate the effect of initial water content and rainfall intensity on the hydraulic behavior and failure mechanisms of the slopes. The models were instrumented with volumetric water content sensors to monitor the advance of the water front, and inclinometers to measure lateral movements of the slope. The models were subjected to rainfall intensities ranging from 25 to 50 mm/h, and durations from 19 to 152 minutes. The influence of low intensity rainfall events before a high intensity rainfall is discussed herein. The results showed that the time the slope models required to reach failure was influenced by the soil initial water content, being shorter at high initial water contents. These results are useful to understand the behavior of unsaturated natural slopes and embankments exposed to rainfall infiltration, and to complement the existing laboratory database existing in this subject. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-5302 |
| institution | Revista Facultad de Ingeniería |
| language | eng |
| publishDate | 2016 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-53022022-06-15T16:21:39Z Effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models Efecto de la infiltración de lluvia en la respuesta hidráulica y en los mecanismos de falla de modelos de taludes arenosos Montoya-Domínguez, Juan David García-Aristizábal, Edwin Fabián Vega-Posada, Carlos Alberto initial water content laboratory testing slope models unsaturated soil water infiltration contenido inicial de agua ensayos de laboratorio infiltración de agua modelos de talud suelo parcialmente saturado This paper presents experimental results obtained from silty sand slope models subjected to an artificial rainfall. Four models were constructed to evaluate the effect of initial water content and rainfall intensity on the hydraulic behavior and failure mechanisms of the slopes. The models were instrumented with volumetric water content sensors to monitor the advance of the water front, and inclinometers to measure lateral movements of the slope. The models were subjected to rainfall intensities ranging from 25 to 50 mm/h, and durations from 19 to 152 minutes. The influence of low intensity rainfall events before a high intensity rainfall is discussed herein. The results showed that the time the slope models required to reach failure was influenced by the soil initial water content, being shorter at high initial water contents. These results are useful to understand the behavior of unsaturated natural slopes and embankments exposed to rainfall infiltration, and to complement the existing laboratory database existing in this subject. Presenta los resultados experimentales obtenidos en modelos de taludes arenosos sometidos a lluvia. Se construyeron cuatro modelos para evaluar el efecto del contenido inicial de agua y de la intensidad de la lluvia en el comportamiento hidráulico y el mecanismo de falla en los taludes. Estos modelos fueron instrumentados con sensores de contenido volumétrico de agua, para monitorear el avance del frente húmedo y con inclinómetros para medir los movimientos laterales de talud. Los modelos fueron sometidos a intensidades de lluvia y duraciones que se encontraron entre 25 y 50 mm/h y 19 y 152 minutos, respectivamente. Adicionalmente, se discutió el efecto de un evento de lluvia de baja intensidad previo a una lluvia de alta intensidad. De los resultados, se observa que el tiempo requerido para alcanzar la falla del talud está influenciado por el contenido inicial de agua, siendo más corto el tiempo para contenidos de agua iniciales más altos. Los resultados presentados son útiles para entender el comportamiento de los taludes naturales y terraplenes parcialmente saturados y expuestos a infiltración de lluvias, así como para complementar la base de datos existente en este tema. Universidad Pedagógica y Tecnológica de Colombia 2016-09-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion investigation investigación application/pdf text/html https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5302 10.19053/01211129.v25.n43.2016.5302 Revista Facultad de Ingeniería; Vol. 25 No. 43 (2016); 97-109 Revista Facultad de Ingeniería; Vol. 25 Núm. 43 (2016); 97-109 2357-5328 0121-1129 eng https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5302/4430 https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5302/5065 |
| spellingShingle | initial water content laboratory testing slope models unsaturated soil water infiltration contenido inicial de agua ensayos de laboratorio infiltración de agua modelos de talud suelo parcialmente saturado Montoya-Domínguez, Juan David García-Aristizábal, Edwin Fabián Vega-Posada, Carlos Alberto Effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models |
| title | Effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models |
| title_alt | Efecto de la infiltración de lluvia en la respuesta hidráulica y en los mecanismos de falla de modelos de taludes arenosos |
| title_full | Effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models |
| title_fullStr | Effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models |
| title_full_unstemmed | Effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models |
| title_short | Effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models |
| title_sort | effect of rainfall infiltration on the hydraulic response and failure mechanisms of sandy slope models |
| topic | initial water content laboratory testing slope models unsaturated soil water infiltration contenido inicial de agua ensayos de laboratorio infiltración de agua modelos de talud suelo parcialmente saturado |
| topic_facet | initial water content laboratory testing slope models unsaturated soil water infiltration contenido inicial de agua ensayos de laboratorio infiltración de agua modelos de talud suelo parcialmente saturado |
| url | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5302 |
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