Repeated failure of a high cutting slope induced by excavation and rainfall: a case study in Fujian, Southeast China

Dou, Hongqiang; Huang, Shuying; Wang, Hao; Wen-bin, Jian

doi:10.1007/s10064-022-02707-x

Cited by 8 publications

(3 citation statements)

References 31 publications

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“…Improving supervision of land clearing, especially in vulnerable areas, so that there is no trimming of the foothills without considering the aspect of slope stability. Slope stability disturbances due to slope cutting are very common, both on slopes with loose sedimentary material or on slope bodies composed of layered sediments [34,35], especially with the effect of rising groundwater levels [36,37]. Good water management, particularly drainage channel design and building, so that concentrated water can be avoided in the steep slope area.…”

Section: Discussion Of Cimanggung Landslide Forensic and Future Disas...mentioning

confidence: 99%

Forensic assessment of landslides induced by environmental changes in Sumedang, Indonesia, an important step for the future disaster prevention

Prawiradisastra¹,

Shomim²,

Trisnafiah³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Landslide forensics assessment was conducted in Cimanggung, Sumedang with the aim of identifying the causes and processes of landslides to guide the critical step of future disaster prevention. The methodology includes investigations on geology, lithology, hydrology, land cover, land-use changes, and rainfall triggering the landslide. Unmanned Aerial Vehicles were used to investigate detailed spatial geomorphology for determining landslide development. The forensic assessment of the landslide that occurred in Cimanggung, Sumedang, on January 9, 2021, revealed the role of environmental changes. The conversion of open land to residential areas affects the water balance. The surface burden to the site on the hilltop by houses and toe-side cutting at the bottom of the slope has occurred. Changes in land conditions and hydrology, along with lithology thickness and variations, are essential aspects of the landslide incident. During the high rainfall rate, there is more water runoff, and the flow could be concentrated in a paleo channel formed by thicker unconsolidated sediments. The combination of these aspects destabilized the slope causing it to slide. Water management, particularly drainage improvement, should be established to prevent excessive runoff and centralized infiltration. Detailed hazard zonation, site delineation, and rainwater storage could be developed to avoid future landslides.

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Section: Discussion Of Cimanggung Landslide Forensic and Future Disas...mentioning

confidence: 99%

Forensic assessment of landslides induced by environmental changes in Sumedang, Indonesia, an important step for the future disaster prevention

Prawiradisastra¹,

Shomim²,

Trisnafiah³

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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show abstract

“…The spacing was 40 m, and the number of monitoring points was less than three at each level. The theoretical position of the potential failure surface was obtained based on previous 3D simulations and engineering survey specifications 35,36,38,39 www.nature.com/scientificreports/ surface. Thus, the drilling depth of the borehole on the first level of the slope platform should be 12 m, and that of the second and third levels should be 17 m. Deep monitoring points were not arranged on the fourth level of the slope platform (Fig.…”

Section: Optimization Of Slope Monitoring Based On 3d Slope Deformati...mentioning

confidence: 99%

Slope monitoring optimization considering three-dimensional deformation and failure characteristics using the strength reduction method: A case study

Wang

Jiang

et al. 2023

Sci Rep

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The potential deformation and failure of a slope with typical 3D shapes involve 3D characteristics, such that these factors cannot be simulated using 2D methods. If 3D characteristics are not considered in expressway slope monitoring, an excessive number of monitoring points may be arranged in the stable/safe part, whereas insufficient monitoring points may be arranged in the unstable/dangerous part. In this study, the 3D deformation and failure characteristics of the Lijiazhai slope of the Shicheng–Ji'an Expressway in Jiangxi Province, China were analyzed by 3D numerical simulations using the strength reduction method. The potential 3D slope surface displacement trends, initial position of failure, and maximum depth of potential slip surface were simulated and discussed. The deformation of Slope A was generally small. The slope ranging from the third platform to the slope top was located in Region I, where the deformation was approximately equal to zero. The deformation of Slope B was located in Region V, where the displacement generally was larger than 2 cm in the range from the first–third platforms to the slope top, and the deformation of the trailing edge exceeded 5 cm. The surface displacement monitoring points should be arranged in Region V. Monitoring was then optimized considering the 3D characteristics of the deformation and failure of a slope. Accordingly, surface and deep displacement monitoring networks were effectively arranged in the unstable/dangerous part of the slope. Results may be used as references for similar projects.

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“…These landslide disasters caused great loss of life and property. Many research investigations have discovered that failure on slopes is mainly caused by excavations [5][6][7][8][9], rainfall infiltration [10][11][12][13], or by human excavations accompanied by rainfall [14][15][16]. To avoid costly losses from sudden landslides, it is of great significance to conduct a comprehensive stability analysis of slopes under different scenarios.…”

Section: Introductionmentioning

confidence: 99%

Field and Numerical Investigation of Taihu Resort Cut Slope Failure in Suzhou, China

Raouf,

Feng,

Zhang

et al. 2024

Applied Sciences

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This study aims to determine the cause of a landslide located at Taihu Resort in Suzhou, Jiangsu Province, China. Field monitoring has been conducted, including two-dimensional finite element method (FEM) numerical analyses to examine slope stability under different working conditions. The monitoring data indicated that the slope deformation was triggered in two phases: at a certain period when the slope was cut and moderate rainfall occurred in November; and afterward, when a continuous heavy rainfall intensity hit during the monsoon rainfall, which accelerated sliding of the slope. Numerical simulations show that stress and maximum displacement distributions formed and redistributed during the excavation process, where the shear strain occurred mainly in the front layer of soil. Additionally, the factor of safety of the slope decreases gradually with the increase in the excavation rate. During 15 days of continuous rainfall infiltration, the slope under heavy rainfall indicates a minimum factor of safety (FoS). Specifically, the slope excavation followed by heavy rainfall intensities contributed significantly to the landslide.

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Repeated failure of a high cutting slope induced by excavation and rainfall: a case study in Fujian, Southeast China

Cited by 8 publications

References 31 publications

Forensic assessment of landslides induced by environmental changes in Sumedang, Indonesia, an important step for the future disaster prevention

Forensic assessment of landslides induced by environmental changes in Sumedang, Indonesia, an important step for the future disaster prevention

Slope monitoring optimization considering three-dimensional deformation and failure characteristics using the strength reduction method: A case study

Field and Numerical Investigation of Taihu Resort Cut Slope Failure in Suzhou, China

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