Local-scale assessment of the displacement pattern of a densely populated landslide, utilizing finite element software and terrestrial radar interferometry: a case study on Huangtupo landslide (P.R. China)

Dumperth, Christian; Rohn, Joachim; Fleer, A. G.; Xiang, Wei

doi:10.1007/s12665-016-5475-y

Cited by 10 publications

(3 citation statements)

References 14 publications

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“…Reservoir landslides attract wide attention as they can cause huge surge waves and other disastrous consequences Wen et al, 2017;Froude and Petley, 2018). The surge wave produced by the 1963 Vajont landslide in Italy destroyed Longarone village and caused nearly 2000 fatalities (Paronuzzi and Bolla, 2012).…”

Section: Introductionmentioning

confidence: 99%

A model for interpreting the deformation mechanism of reservoir landslides in the Three Gorges Reservoir area, China

Zou

Tang

Criss

et al. 2021

Nat. Hazards Earth Syst. Sci.

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Abstract. Landslides whose slide surface is gentle near the toe and relatively steep in the middle and rear part are common in the Three Gorges Reservoir area, China. The mass that overlies the steep part of the slide surface is termed the “driving section”, and that which overlies the gentle part of the slide surface is termed the “resisting section”. A driving–resisting model is presented to elucidate the deformation mechanism of reservoir landslides of this type, as exemplified by Shuping landslide. More than 13 years of field observations that include rainfall, reservoir level, and deformation show that the displacement velocity of Shuping landslide depends strongly on the reservoir level but only slightly on rainfall. Seepage modeling shows that the landslide was destabilized shortly after the reservoir was first impounded to 135 m, which initiated a period of steady deformation from 2003 to 2006 that was driven by buoyancy forces on the resisting section. Cyclical water level fluctuations in subsequent years also affected slope stability, with annual “jumps” in displacement coinciding with drawdown periods that produce outward seepage forces. In contrast, the inward seepage force that results from rising reservoir levels stabilizes the slope, as indicated by decreased displacement velocity. Corrective transfer of earth mass from the driving section to the resisting section successfully reduced the deformation of Shuping landslide and is a feasible treatment for huge reservoir landslides in similar geological settings.

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Section: Introductionmentioning

confidence: 99%

A model for interpreting the deformation mechanism of reservoir landslides in the Three Gorges Reservoir area, China

Zou

Tang

Criss

et al. 2021

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…However, Nakamura [9] analyzed landslides in the reservoir areas in Japan and found that about 60% of the landslides occurred during the rapid fall of reservoir water level, and about 40% of the landslides were induced by the rise of reservoir water level. Also, deformations of landslides in reservoir areas are believed to start at the beginning of reservoir operation and last for several years [10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Deformation mechanism of deposit landslide induced by fluctuations of reservoir water level based on physical model tests

2021

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Located in reservoir area of Dahuaqiao Hydropower Station in Lancang River, the Dahua ancient deposit landslide exhibits high possibility of reactivation due to reservoir impoundment. In this study, physical model tests are conducted to investigate the variations of groundwater, deformation, and failure process of the landslide under different fluctuation speeds of reservoir water level. Influence of groundwater on landslide stability when reservoir water level fluctuating is analyzed then. Results indicate that the seepage pressure caused by water level difference can increase landslide displacement. During the dropping process of reservoir water level, the relationship between landslide displacement and water level difference can be described by a power function model. Groundwater has negative effects on stability of landslides, and the damage is characterized by traction landslide. More attentions should be paid on the displacement of the front edge of the landslide during the first rise and drop of reservoir water level. The study provides indispensable information for scheduling reservoir water level in the Dahuaqiao and others similar reservoir areas, thus having vital importance.

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“…To recognize the latest situation of ecological environment in the TGR, to explore the eco-environmental effects and to promote the ecological environment of the TGR, "Environmental Earth Science" edited this thematic issue on "Environmental Research of the Three Gorges Reservoir," which contains 16 articles mainly focusing on nutrient imports of the upstream rivers of the TGR Ren et al 2016;Zheng et al 2016), eutrophication problem in the tributary bay (Cui et al 2016;Zhang et al 2016a) and water quality changes in the reservoir area (Huang et al 2016;Kranzioch-Seipel et al 2016;Zhao et al 2016). There are also articles studying the land use change (Teng et al 2016; and geological disasters in the TGR region (Chen et al 2016;Dumperth et al 2016;Guo et al 2016;Zhang et al 2016b). Furthermore, the optimal TGR operation mode is analyzed from the perspective of ecological water level of the downstream of the TGR (Dai et al 2016).…”

mentioning

confidence: 99%

Thematic issue: water environment of the Three Gorges Reservoir

et al. 2017

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Local-scale assessment of the displacement pattern of a densely populated landslide, utilizing finite element software and terrestrial radar interferometry: a case study on Huangtupo landslide (P.R. China)

Cited by 10 publications

References 14 publications

A model for interpreting the deformation mechanism of reservoir landslides in the Three Gorges Reservoir area, China

A model for interpreting the deformation mechanism of reservoir landslides in the Three Gorges Reservoir area, China

Deformation mechanism of deposit landslide induced by fluctuations of reservoir water level based on physical model tests

Thematic issue: water environment of the Three Gorges Reservoir

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