Landslide Susceptibility Mapping Using a Grid-based Infiltration Transient Model in Mountainous Regions

Kim, Dong-Yeob; Lee, Eun Jai; Ahn, Byungkyu; Im, Sangjun

doi:10.1007/978-3-319-05050-8_66

Cited by 5 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where erefore, in the current study, we assumed c as a dimensionless value, that is, 0.33 (≈1/3), for better applicability at the site. (ii) Empirical constant C e : Because γ was determined, both side of equation (1) were divided by V 1/3 , and it is expressed as equation (2). en, to determine C e , we conducted the regression analysis of power model.…”

Section: Advances In Civil Engineeringmentioning

confidence: 99%

“…Debris flow refers to a geological phenomenon in which mixture of sediment and water consisting of various soil particles ranging from fine clay to large boulder rushes down a mountainside at high velocity [1]. While debris flow occurs from various causes generally, particularly, in South Korea, localized heavy rain in summer is the main reason for debris flow [2]. In most cases, landslide-induced sediment at hillside becomes debris flow as it flows into a mountain stream.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Development of Debris Flow Impact Force Models Based on Flume Experiments for Design Criteria of Soil Erosion Control Dam

Kim

2019

Advances in Civil Engineering

Self Cite

View full text Add to dashboard Cite

Soil erosion control dams are widely used as part of measures to reduce damage caused by debris flow all over the world. Engineering considerations are needed for proper design of erosion control dams, but in the Republic of Korea, the impact force of debris flow is not fully reflected in the current design criteria of the dam. Against this backdrop, this study was conducted to estimate the impact force of debris flow for the practical purpose of designing erosion control dam. Simulated flume experiments were performed to develop the relationship to estimate the flow velocity as well as the impact force of debris flow. Experimental results showed that increases both in sediment mixture volume and flume slope gradient led to an increase in flow velocity. Especially, it was found that as clay content increased gradually, the flume slope gradient had greater impact on the increase of flow velocity. Also, it was proved that the impact force of debris flow was well fitted to the hydrodynamic model as it showed linear correlation with the flow velocity. Then, the debris-flow velocity model was established based on the factor related to the debris-flow velocity. Finally, the dynamic model to estimate the impact force of debris flow was introduced utilizing correlations between the established debris-flow velocity model and Froude number. Both models which were developed with using statistically significant watershed characteristics succeeded in explaining the experiment results in a more accurate way compared to existing models. Therefore, it is highly expected that these models can be fully utilized to estimate impact force of debris flow which will be required to design erosion control dams in practical use through overcoming their identified limitations.

show abstract

Section: Advances In Civil Engineeringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Development of Debris Flow Impact Force Models Based on Flume Experiments for Design Criteria of Soil Erosion Control Dam

Kim

2019

Advances in Civil Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…The 10-year average for recorded landslide-damaged areas increased from 321 ha in the 1980s to 349 ha in the 1990s and 713 ha in the 2000s; this is more than double the values of previous decades. Since the year 2000, in particular, more than 1,000 ha of landslide-damaged areas have been recorded (Kim et al, 2014). Additionally, landslides are responsible for the loss of approximately 23 lives each year, which comprises approximately 25% of the annual casualties as a result of a natural disaster in Korea (Lee and Park, 2014).…”

Section: Introductionmentioning

confidence: 99%

Survey of spatial and temporal landslide prediction methods and techniques

2016

Korean Journal of Agricultural Science

View full text Add to dashboard Cite

Landslides are one of the most common natural hazards causing significant damage and casualties every year. In Korea, the increasing trend in landslide occurrence in recent decades, caused by climate change, has set off an alarm for researchers to find more reliable methods for landslide prediction. Therefore, an accurate landslide-susceptibility assessment is fundamental for preventing landslides and minimizing damages. However, analyzing the stability of a natural slope is not an easy task because it depends on numerous factors such as those related to vegetation, soil properties, soil moisture distribution, the amount and duration of rainfall, earthquakes, etc. A variety of different methods and techniques for evaluating landslide susceptibility have been proposed, but up to now no specific method or technique has been accepted as the standard method because it is very difficult to assess different methods with entirely different intrinsic and extrinsic data. Landslide prediction methods can fall into three categories: empirical, statistical, and physical approaches. This paper reviews previous research and surveys three groups of landslide prediction methods.

show abstract

“…landslide and debris flow). Many debris flow events have occurred all over the country, causing more than 1000 ha of damaged areas during the typhoon periods in 2002, 2003, and 2006, with annual mean landslide-damaged areas of 713 ha in the 2000s (Kim et al 2014). Recently, debris flow has occurred around urban areas more frequently creating a higher risk of human and facility damage, such as the Mt.…”

Section: Introductionmentioning

confidence: 99%

Flow and deposition characteristics of sediment mixture in debris flow flume experiments

Kim

et al. 2017

Forest Science and Technology

Self Cite

View full text Add to dashboard Cite

This study was conducted in order to identify the flow and deposition characteristics of immature debris flows, which occur frequently in urban areas. We carried out a series of flume experiments involving different flume gradients and sediment mixture viscosities using a small-scaled flume, which reproduced the flow and deposition behaviors of immature debris flows. We found that high flume gradient and low viscosity of mixture led to faster flow velocity, but flow depth was rarely affected by the flume gradient and mixture viscosity had no significant impact on flow depth. The experiments showed a positive relationship between deposition shape (length and width) and flow velocity, with runoff length more sensitive to flow velocity than deposit width. The results help inform standard guidance applied in practice to the design of prevention structures against immature debris flow in urban areas. KEYWORDSDebris flow prevention structure; flow and deposition behavior; flume experiment; immature debris flow; urban areas

show abstract

Landslide Susceptibility Mapping Using a Grid-based Infiltration Transient Model in Mountainous Regions

Cited by 5 publications

References 2 publications

Development of Debris Flow Impact Force Models Based on Flume Experiments for Design Criteria of Soil Erosion Control Dam

Development of Debris Flow Impact Force Models Based on Flume Experiments for Design Criteria of Soil Erosion Control Dam

Survey of spatial and temporal landslide prediction methods and techniques

Flow and deposition characteristics of sediment mixture in debris flow flume experiments

Contact Info

Product

Resources

About