Post-earthquake rainfall-triggered slope stability analysis in the Lushan area

Yang, Zhihua; Lan, Hengxing; Liu, Hongjiang; Li, Langping; Yu-ming, WU; Meng, Ying; Xu, Le

doi:10.1007/s11629-013-2839-6

Cited by 20 publications

(5 citation statements)

References 23 publications

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“…Seismic waves can cause soil particle displacement, leading to soil compaction and further instability [101][102][103]. The interaction of these two factors can cause significant damage to structures built on the soil and to the surrounding terrain [102][103][104][105][106][107][108].…”

Section: Combined Effects: Increased Soil Instability and Erosionmentioning

confidence: 99%

“…It is important to consider the potential impact of combined rainfall and seismic activity when designing structures and planning for natural hazards [102,[104][105][106]. This requires an understanding of the mechanics of suffusion and the ways in which rainfall and seismic activity can affect soil stability [67,70,86].…”

Section: Combined Effects: Increased Soil Instability and Erosionmentioning

confidence: 99%

“…The design of cut and fill slopes can also play a role in preventing internal erosion. Proper grading and the implementation of effective erosion control measures, such as retaining walls, can help to stabilize slopes and prevent internal erosion [87,[102][103][104][105][106].…”

Section: Mitigation and Preventionmentioning

confidence: 99%

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Soil Suffusion under the Dual Threat of Rainfall and Seismic Vibration

Najar,

Ahmadi,

Khalik

et al. 2023

IJDNE

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This paper employs the systematic literature review (SLR) methodology to investigate the combined effects of seismic vibrations and rainfall on soil suffusion, a process leading to soil instability. Earthquake activity can accelerate soil liquefaction, exacerbating suffusion, while heavy rainfall can increase soil weight, inducing instability. Consequently, the repercussions of seismic activity and rainfall on suffusion may induce further damage and instability to civil infrastructure. The review reveals that the compound impact of rainfall and seismic vibrations can precipitate severe damage and instability, primarily through two mechanisms. First, earthquakes can catalyze soil liquefaction, inciting soil movement and amplifying the suffusion process. Second, heavy rainfall can saturate the soil, augmenting its weight and rendering it unstable, thereby inducing suffusion. However, the review also reveals a significant gap in understanding and mitigating suffusion triggered by simultaneous rainfall and seismic activity. Current techniques for identifying and mitigating such suffusion are inadequate, highlighting the need for further research. This review posits that the interaction of rainfall and seismic vibrations as a catalyst for soil suffusion demands additional scrutiny. It provides a comprehensive understanding of suffusion and the impact of rainfall and seismic vibrations on suffusive soils, serving as a basis for future studies on this important issue.

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Section: Combined Effects: Increased Soil Instability and Erosionmentioning

confidence: 99%

Section: Combined Effects: Increased Soil Instability and Erosionmentioning

confidence: 99%

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Soil Suffusion under the Dual Threat of Rainfall and Seismic Vibration

Najar,

Ahmadi,

Khalik

et al. 2023

IJDNE

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“…Generally, rainfall is one of the primary landslide triggers, especially in tropical high-precipitation regions [34][35][36]. Indonesia has a tropical climate with high rainfall intensity.…”

Section: Landslide Controlling Factorsmentioning

confidence: 99%

The mechanism of landslide-induced debris flow in geothermal area, Bukit Barisan mountains of Sumatra, Indonesia

Wilopo¹,

Faisal²

2021

J Appl Eng Science

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Landslides frequently occur in Indonesia, especially in the geothermal areas located on Sumatra's mountainous island. On April 28, 2016, around 04:30 Western Indonesia Time, a landslide-induced debris flow occurred in Lebong District, Bengkulu Province, Indonesia. The source area of the landslide was located at Beriti Hill on the Bukit Barisan Mountain Range. It resulted in 6 fatalities and damage to infrastructures such as geothermal facilities, roads, water pipes, houses, and bridges. Subsequent landslides and debris flows occurred on April 30, May 2, and 3, 2016. Therefore, this study aims to examine the mechanism and to know the most significant contributing factor to the Beriti Hill landslide. Site investigation, soil sampling, XRD analysis, and Lidar analysis were carried out in the research. Beriti Hill is a geothermal area with many manifestations and is composed of volcanic rocks. Alteration processes produced a thick layer of soil from volcanic rocks. The thick soil dominated by clay minerals and steep slopes is the dominant controlling factor of a landslide, triggered by high rainfall intensity. Debris flows are recurring events based on the Air Kotok river's stratigraphic data downstream of the landslide area. The debris flow material is toxic due to the low pH from the geothermal process. Therefore, the alluvial fan deposit area from Beriti Hill debris flow is a hazard zone and unsuitable for settlement and agriculture.

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“…The effect of soil saturation due to excessive rainfall and preceding a landslide was examined [1]. Numerous researchers have conducted post-earthquake rainfall-triggered slope stability analyses [2], [3]. The analysis results revealed that a slope can be stable after the occurrence of an earthquake or after a rainfall event, but the stability of a slope is adversely affected when an earthquake occurs after a rainfall event.…”

Section: Introductionmentioning

confidence: 99%

Combined Effect of Rainfall Seepage and Seismic Shaking on Slope Stability by Using a Three-Dimensional Stability Analysis

Chen¹,

Wu²

2019

IJET

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Taiwan is located in the Pacific Rim seismic zone and has a subtropical climate and mountainous areas. As a limited amount of area in Taiwan can be categorized as plains, the mountainous areas are used for development requirements. Overdevelopment on weak slope lands causes them to collapse and further exposes the lands to natural disasters such as earthquakes and torrential rains. Thus, appropriate slope stability analysis methods and engineering design measures should be proposed for slope lands. The purpose of this study was to discuss the combined effect of seismic shaking and soil seepage due to rainfall on slope lands by analyzing their combined effect on the factor of safety (FS) and failure mode of a slope land. A slope stability analysis was conducted using finite difference analysis, performed with FLAC3D. The soil strength reduction method was adopted to identify the FS of slopes in a static state by using FLAC3D. The formation of plastic sliding zones as the ratio of soil strength reduction was defined as FS in the seismic analysis. This study employed earthquake time history data of the Chi-Chi earthquake recorded at the Shihgang Dam station in the central region of Taiwan. The combined effect of seismic shaking and soil seepage due to rainfall was analyzed to determine its influence on the FS of the slope. The proposed method, which analyzes the combined effect of seismic shaking and rainfall seepage on the FS, obtains superior results to the conventional method, which analyzes the effects of seismic shaking and rainfall seepage separately.

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Post-earthquake rainfall-triggered slope stability analysis in the Lushan area

Abstract: Abstract

Cited by 20 publications

References 23 publications

Soil Suffusion under the Dual Threat of Rainfall and Seismic Vibration

Soil Suffusion under the Dual Threat of Rainfall and Seismic Vibration

The mechanism of landslide-induced debris flow in geothermal area, Bukit Barisan mountains of Sumatra, Indonesia

Combined Effect of Rainfall Seepage and Seismic Shaking on Slope Stability by Using a Three-Dimensional Stability Analysis

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