Landslide risk assessment and zoning

Corominas, Jordi

doi:10.1007/bfb0038635

Cited by 5 publications

(2 citation statements)

References 22 publications

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“…On the other hand, the working scale also affects the quality of the results (Van Westen, 1994). Comprehensive syntheses of methods for susceptibility and hazard assessment can be found in Hansen (1984), Hartlén and Viberg (1988) and Corominas (1992). Procedures can be grouped as based on geomorphological analysis, data treatment techniques and deterministic approaches.…”

Section: Introductionmentioning

confidence: 99%

Assessment of shallow landslide susceptibility by means of multivariate statistical techniques

Baeza

Corominas

2001

Earth Surf Processes Landf

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211

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Several multivariate statistical analyses have been performed to identify the most influential geological and geomorphological parameters on shallow landsliding and to quantify their relative contribution. A data set was first prepared including more than 30 attributes of 230 failed and unfailed slopes. The performance of principal component analysis, t-test and one-way test, allowed a preliminary selection of the most significant variables, which were used as input variables for the discriminant analysis. The function obtained has classified successfully 88Ð5 per cent of the overall slope population and 95Ð6 per cent of the failed slopes. Slope gradient, watershed area and land-use appeared as the most powerful discriminant factors. A landslide susceptibility map, based on the scores of the discriminant function, has been prepared for Ensija range in the Eastern Pyrenees. An index of relative landslide density shows that the results of the map are consistent.

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Section: Introductionmentioning

confidence: 99%

Assessment of shallow landslide susceptibility by means of multivariate statistical techniques

Baeza

Corominas

2001

Earth Surf Processes Landf

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365

211

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“…Also, the occurrence of landslides is related to variations in environmental conditions [1] , such as the rainfall, groundwater, earthquake and manual excavation, etc. It is noticed that many landslides occur in rainy season which means that rainfall is one of the major causes of landslides [2][3][4][5] .The infiltration of rainfall reduces shear strength on the slip surface by increasing pore water pressure, thus resulting in the instability of landslide and increased landslide movement [6][7] .Thus, it is important to study the seepage properties of landslide under rainfall condition.…”

Section: Introductionmentioning

confidence: 99%

Study on Seepage Properties of Zheng-Gang Large Landslide under Rainfall Condition

Sun

2012

AMR

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Under influence of heavy rainfall, the Zheng-gang landslide in Gu-Shui hydropower station of China started to have serious deformation. Based on the geological field investigations, the mechanism of rainfall infiltration was qualitatively analyzed previously. The rainfall infiltration reduces shear strength on the slip surface by increasing pore water pressure and the hydrodynamic pressure is generated which increased with the hydraulic gradient and water level, thus resulting in the instability of landslide and increased landslide movement. Secondly, combined with the seepage theory of saturated-unsaturated, quantitative study was carried out on the seepage properties of landslide under rainfall condition. Not only the dynamic sliding mechanism of landslide is revealed, but also the seepage stability was evaluated. The worst stability condition came out 4 days after the rain stopped, and the maximal thickness of perched water up to 6m. The results of stability analysis have agreement with the field observations. Finally, the effective drainage measures were proposed.

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Regionalisierung in den Geowissenschaften

Schröder¹

1994

Neuere Statistische Verfahren Und Modellbildung in Der Geoökologie

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Landslide risk assessment and zoning

Cited by 5 publications

References 22 publications

Assessment of shallow landslide susceptibility by means of multivariate statistical techniques

Assessment of shallow landslide susceptibility by means of multivariate statistical techniques

Study on Seepage Properties of Zheng-Gang Large Landslide under Rainfall Condition

Regionalisierung in den Geowissenschaften

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