Landslide reconstruction using seismic signal characteristics and numerical simulations: Case study of the 2017 “6.24” Xinmo landslide

Yan, Yan; Cui, Yifei; Guo, Junbo; Hu, Sheng; Wang, Ziang; Yin, Shuyao

doi:10.1016/j.enggeo.2020.105582

Cited by 68 publications

(17 citation statements)

References 62 publications

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“…In addition, F 2 increases as the inflow discharge increases (such as in tests [16][17][18][19][20][21][22], which reduces the stability factor K and initiates a debris flow. When artificial rainfall and runoff both supply water (such as in tests [11][12][13][14][15], the infiltration of the water increases and the water content of the mine waste rapidly increases. Thus, debris flows initiate easily.…”

Section: Analysis Of the Critical Conditions For Debris Flow Initiationmentioning

confidence: 99%

“…Scholars in China and abroad have done a great deal of research on the formation mechanism of debris flows [1,[5][6][7]. Various mechanisms that are likely to trigger debris flows include the mobilization of debris deposits on steep impermeable surfaces [5], landslides [7,8], and the collapse of natural or artificial dams [9][10][11][12]. The initiation modes of debris flows can be divided into two types: hydraulic debris flow and geotechnical debris flow.…”

Section: Introductionmentioning

confidence: 99%

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A Qualitative Study of the Critical Conditions for the Initiation of Mine Waste Debris Flows

Cao

Zhu

Liu

et al. 2020

Water

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Mine waste debris flows are a type of man-made debris flow that commonly lead to major disasters. In this study, the Xiaotong Gully, which is located in the Xiaoqinling gold mining area in China and contains a typical mine waste debris flow gully, was selected as the study area. Since a debris flow can be classified as either a geotechnical debris flow or hydraulic debris flow based on its initiation mode, we conducted 46 experimental model tests to explore the initiation conditions of these two different types of debris flows. According to our tests, the initiation conditions of hydraulic debris flows were mainly affected by the flume gradient, the water content of the mine waste, the inflow discharge, the water supply modes, and the clay particle content. A larger flume gradient and higher mine waste water content were more conducive to initiating a hydraulic debris flow. However, the influence of the water supply mode on the initiation of a hydraulic debris flow was complex (influenced by factors such as water content of mine waste, runoff discharge rate and rainfall intensity). The critical runoff of a hydraulic debris flow, which starts with a parabolic relationship to the clay particle content of the mine waste, decreased with increasing clay particle content and then increased. There was a minimum critical runoff when the clay content of the mine waste was 30%. The initiation conditions of a geotechnical debris flow were mainly affected by the flume gradient, the water content, and the clay particle content. The critical gradient of a geotechnical debris flow decreased with increasing water content and had a parabolic relationship to the clay particle content. In tests 31–46 of this study, the second and third critical slopes both decreased and then increased with increasing clay particle content. These preliminary research results provide a scientific reference for subsequent research on the prevention and mitigation of mine waste debris flows.

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Section: Analysis Of the Critical Conditions For Debris Flow Initiationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Qualitative Study of the Critical Conditions for the Initiation of Mine Waste Debris Flows

Cao

Zhu

Liu

et al. 2020

Water

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“…is area belongs to the uplift area of China's topography and the active belt of the tectonic movement. e occurrence of several strong earthquakes in the region has resulted in the loosening of the surface material, damage to deep rocks and the soil mass, and the decrease in water saturation rate in the study area [17,18]. All these factors have led to frequent secondary disasters in the area, such as topples, slides, and flows.…”

Section: Study Areamentioning

confidence: 99%

Dynamic Vulnerability Analysis of Mountain Settlements Exposed to Geological Hazards: A Case Study of the Upper Min River, China

Ding

Tang

Huang

et al. 2020

Advances in Civil Engineering

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The upper reaches of Min River (The upper Min River) is located in Southwest China with significant mountain settlements, which are vulnerable to frequent geological hazards. Based on a field investigation, collation of yearbook data, and analysis through the use of SPSS statistical software, a vulnerability evaluation index system of geological hazards was devised. According to the actual field situation and the acquired data of the study area in 2006, 2009, and 2015, 16 indicators were selected as settlement vulnerability evaluation indexes of geological hazards. The indexes included population density, building coverage, and economic density. Based on the comprehensive evaluation model of entropy value, the dynamic change in the settlement vulnerability of geological hazards was analyzed. The results showed that population density, building coverage, economic density, and road density were the factors that affected the settlement vulnerability of geological hazards the most—Wenchuan earthquake caused considerable damage to the upper Min River, making the area the most vulnerable in 2009. However, its vulnerability decreased in 2015, which indicated that postearthquake reconstruction achieved significant results. Thus, the vulnerability has emerged as an important indicator reflecting the safety and healthy development of mountain settlements.

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“…Yan et al (2020) [21] reconstructed the dynamic behavior of the 2017 landslide event in Xinmo village, China, by using the seismic signal characteristics and discrete element method. They categorized the landslide processes into five stages: stationary, slipping, transition, entrainment-transportation, and deposition stages, according to the characteristics of the seismic signals and time-frequency spectra.…”

Section: Introductionmentioning

confidence: 99%

On Dam Failure Induced Seismic Signals Using Laboratory Tests and on Breach Morphology due to Overtopping by Modeling

Hung

Tseng

Chen

et al. 2021

Water

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Dam models were constructed in an indoor flume to test dam breach failure processes to study the seismic signals induced. A simple dam breach model was also proposed to estimate hydrographs for dam breach floods. The test results showed that when the retrogressive erosion due to seepage of the dam continues, it will eventually reach the crest at the upstream side of the dam, and then trigger overtopping and breaching. The seismic signals corresponding to the failure events during retrogressive erosion and overtopping of the dam models were evaluated. Characteristics of the seismic signals were analyzed by Hilbert–Huang transform. Based on the characteristics of the seismic signals, we found four types of mass movement during the retrogressive erosion process, i.e., the single, intermittent, and successive slides and fall. There were precursor seismic signals found caused by cracking immediately before the sliding events of the dam. Furthermore, the dam breach modeling results coincided well with the test results and the field observations. From the test and modeling results, we confirmed that the overtopping discharge and the lateral sliding masses of the dam are also among the important factors influencing the evolution of the breach. In addition, the widening rate of the breach decreases with decreased discharge. The proposed dam breach model can be a useful tool for dam breach warning and hazard reduction.

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Landslide reconstruction using seismic signal characteristics and numerical simulations: Case study of the 2017 “6.24” Xinmo landslide

Cited by 68 publications

References 62 publications

A Qualitative Study of the Critical Conditions for the Initiation of Mine Waste Debris Flows

A Qualitative Study of the Critical Conditions for the Initiation of Mine Waste Debris Flows

Dynamic Vulnerability Analysis of Mountain Settlements Exposed to Geological Hazards: A Case Study of the Upper Min River, China

On Dam Failure Induced Seismic Signals Using Laboratory Tests and on Breach Morphology due to Overtopping by Modeling

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