An evolution model of large consequent bedding rockslides, with particular reference to the Jiweishan rockslide in Southwest China

Tang, Huiming; Zou, Zongxing; Xiong, Chengren; Wu, Yiping; Hu, Xinli; Wang, Liangqing; Lu, Sha; Criss, Robert E.; Li, Changdong

doi:10.1016/j.enggeo.2014.08.021

Cited by 81 publications

(21 citation statements)

References 26 publications

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“…The mechanical parameters of the weak zone also gradually weaken from the trailing edge to the leading edge according to the law of rainwater seepage. Macroscopically, the displacement of the trailing edge is greater than that of the leading edge (Figures 1 and 2) [44,45]. The sliding surface of such landslides usually presents the spatial distribution characteristics of a two-stage composite sliding surface with steep upward and slow downward movement [44,45], and their sliding dip angles are usually between 10° and 35° [47][48][49].…”

Section: Failure Mode Of Thrust-load-induced Accumulation Landslides mentioning

confidence: 99%

“…Macroscopically, the displacement of the trailing edge is greater than that of the leading edge (Figures 1 and 2) [44,45]. The sliding surface of such landslides usually presents the spatial distribution characteristics of a two-stage composite sliding surface with steep upward and slow downward movement [44,45], and their sliding dip angles are usually between 10° and 35° [47][48][49]. Some examples of such landslides are the Xitan and Bazimen landslides [50,51] in Zigui county, Hubei province, and the Yuhuangge landslide in Wushan county [52].…”

Section: Failure Mode Of Thrust-load-induced Accumulation Landslides mentioning

confidence: 99%

“…Considering the characteristics of thrust-load-induced accumulation landslides triggered by rainfall infiltration and the limitations of the current analysis methods [44,45], this paper proposes a novel approach toward studying the weakening law of sliding zone soil and determining the stability of such landslides. In this study, the constitutive equation for the sliding zone soil and the "S"-shaped curve are applied to establish a state curve equation for the weakening coefficient of sliding zone soil.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of Weakening Law and Stability of Sliding Zone Soil in Thrust-Load-Induced Accumulation Landslides Triggered by Rainfall Infiltration

Zhou

Shen

Tang

et al. 2021

Water

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This study investigated the weakening model, law of mechanics parameters, and stability of the sliding zone soil associated with thrust-load-induced accumulation landslides triggered by rainfall infiltration. The spatial and morphological characteristics and rule of the sapping process were analyzed, considering the constitutive equation of the sliding zone soil, in order to establish a state curve equation for the weakening coefficient of sliding zone soil based on the “S”-shaped curve. Moreover, a formula for calculating slope stability with this failure mode was derived and applied to calculate the stability of a deformation body in Danbo reservoir, China. The results show that the sliding zone in this type of landslide exhibits steep upward and slow downward trends, and affected by rainfall infiltration, its failure develops gradually from the trailing edge to the front edge. In the constitutive equation, the weakening of soil mechanical parameters is manifested as the weakening of shear stiffness, while the “S”-shaped curve of the weakening coefficient reflects the spatial characteristics of the weakening process. The main factors affecting the accuracy of the slope stability calculation are the values of model parameters and assessment of the development characteristics and weakening stage of the sliding zone.

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Section: Failure Mode Of Thrust-load-induced Accumulation Landslides mentioning

confidence: 99%

Section: Failure Mode Of Thrust-load-induced Accumulation Landslides mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of Weakening Law and Stability of Sliding Zone Soil in Thrust-Load-Induced Accumulation Landslides Triggered by Rainfall Infiltration

Zhou

Shen

Tang

et al. 2021

Water

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“…S-curve model has the basic features for describing the progressive transition from one value to another which increases nonlinearly and continuously, whose variation trend is shaped like "S" (Figure 3). In previous studies, the S-curve model has been used successfully in describing the spatial variations of the shear strength parameters of the bedding plane [8,18,19].…”

Section: Spatial Variation Model For Rock Mass and Rock Discontinuitiesmentioning

confidence: 99%

Modified Limiting Equilibrium Method for Stability Analysis of Stratified Rock Slopes

Rui

et al. 2016

Mathematical Problems in Engineering

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The stratified rock of Jurassic strata is widely distributed in Three Gorges Reservoir Region. The limit equilibrium method is generally utilized in the stability analysis of rock slope with single failure plane. However, the stratified rock slope cannot be accurately estimated by this method because of different bedding planes and their variable shear strength parameters. Based on the idealized model of rock slope with bedding planes, a modified limiting equilibrium method is presented to determine the potential sliding surface and the factor of safety for the stratified rock slope. In this method, the S-curve model is established to define the spatial variations of the shear strength parameterscand φof bedding plane and the tensile strength of rock mass. This method was applied in the stability evaluation of typical stratified rock slope in Three Gorges Reservoir Region, China. The result shows that the factor of safety of the case study is 0.973, the critical sliding surface for the potential slip surface appears at bedding plane C, and the tension-controlled failure occurs at 10.5 m to the slope face.

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“…Also well known, is the 2003 Qianjiangping landslide, which was triggered after the first trial storage of the Three Gorges Reservoir. This landslide ruined 346 houses, took 24 lives, and caused 1200 people homeless [ 2 ]. These famous disaster events occurred in reservoir areas resulted in severe consequences of casualties and economic losses, attracting wide public concerns.…”

Section: Introductionmentioning

confidence: 99%

Application of Well Drainage on Treating Seepage-Induced Reservoir Landslides

Zou

Wang

et al. 2020

IJERPH

Self Cite

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In the process of rapid drawdown of reservoir water level, the seepage force in the slide mass is an important factor for the stability reduction and deformation increment of many landslides in the reservoir areas. It is feasible to improve the stability of seepage-induced landslide by employing a drainage well to reduce or eliminate the water head difference that generates the seepage force. In this paper, the Shuping landslide, a typical seepage-induced landslide in the Three Gorges Reservoir area of China, is taken as an example. A series of numerical simulations were carried out to figure out the seepage field, and the Morgenstein–Price method was adopted to calculate the landslide stability. Then the influence of horizontal location of the drainage well, drainage well depth, drainage mode on the landslide treatment effect, and the applicability of drainage well were analyzed. The results show that: (1) landslide stability increases obviously with the well depth in the slide mass, while the increment of landslide stability with the well depth is limited in the slide bed; (2) the sensitivity of the stability improvement with the depth is greater than that with the horizontal positions of the drainage wells in the slide mass; (3) the drainage well is suggested to be operated when the reservoir water falls rather than operates all the time; and (4) the drainage method is most suitable for landslides with low and medium permeability. These results provide deep insights into the treatment of seepage-induced landslides.

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An evolution model of large consequent bedding rockslides, with particular reference to the Jiweishan rockslide in Southwest China

Cited by 81 publications

References 26 publications

Analysis of Weakening Law and Stability of Sliding Zone Soil in Thrust-Load-Induced Accumulation Landslides Triggered by Rainfall Infiltration

Analysis of Weakening Law and Stability of Sliding Zone Soil in Thrust-Load-Induced Accumulation Landslides Triggered by Rainfall Infiltration

Modified Limiting Equilibrium Method for Stability Analysis of Stratified Rock Slopes

Application of Well Drainage on Treating Seepage-Induced Reservoir Landslides

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