Redirigiendo al acceso original de articulo en 16 segundos...
Inicio  /  Water  /  Vol: 9 Núm: 9 Par: 0 (2017)  /  Artículo
ARTÍCULO
TITULO

Threshold of Slope Instability Induced by Rainfall and Lateral Flow

Hung-En Chen    
Tung-Lin Tsai    
Jinn-Chuang Yang    

Resumen

In this study, a two-dimensional numerical landslide model was developed to investigate the effects of the amount of rainfall and lateral flow on induced slope failures. The Richard?s equation was used to evaluate pore water pressure distribution in response to moisture content variations induced by rainfall and infiltration in soil mass. The slope stability was then assessed using the limit equilibrium method of slices, and the moment equilibrium was considered. Several hypothetical cases involving various rainfall amounts and durations were simulated using the proposed model to investigate the possible tendency toward slope instability caused by rainfall time-series processes. After the rainfall conditions were analyzed, rainfall patterns were categorized as uniform, intermediate, advanced, and delayed types. Furthermore, the lateral flows running through the upstream and downstream boundaries of a slope were analyzed to investigate the lateral effects on the hillslope. The results indicated that the lateral flow may increase or reduce the groundwater table and, thus, accelerate or reduce the occurrence of slope failure. In addition, several rainfall threshold curves that accounted for the rainfall amounts, durations, and patterns were developed and appeared more realistic and to approximate real conditions more accurately than those created using one-dimensional landslide modeling do.

 Artículos similares

       
 
Ru Li, Siyi Huang and Hongqiang Dou    
Large-scale photovoltaic power plants located in highland mountainous areas are vulnerable to landslides due to extreme rainfall, posing a significant threat to the normal operation of photovoltaic power plants. However, limited research has been conduct... ver más
Revista: Water

 
Bo Yang, Sami Kaidi and Emmanuel Lefrançois    
The bending section of the restricted channel is one of the most accident-prone areas for inland ships, but few clear investigations on the curvature effect have been conducted till now. Therefore, this paper presents numerical research of the curvature ... ver más

 
Elisangela do Prado Oliveira, Andrés Miguel González Acevedo, Virnei Silva Moreira, Vitor Pereira Faro and Alessander Christopher Morales Kormann    
In addition to the intensity of precipitation, the different hydraulic and mechanical properties of a soil hill can also be responsible for landslides. More specifically, the same rainfall amount can trigger or not trigger a mass movement depending on it... ver más
Revista: Water

 
Mingmei Zhang, Yongan Xue, Yonghui Ge and Jinling Zhao    
To accurately identify slope hazards based on high-resolution remote sensing imagery, an improved watershed segmentation algorithm is proposed. The color difference of the Luv color space was used as the regional similarity measure for region merging. Fu... ver más

 
Da Li, Donghui Shangguan and Muhammad Naveed Anjum    
The China?Pakistan Economic Corridor (CPEC), a key hub for trade, is susceptible to glacial lake outburst floods. The distributions and types of glacial lakes in the CPEC are not well documented. In this study, cloud-free imagery acquired using the Lands... ver más