Formation mechanism and stability analysis of the Houba expansive soil landslide

Hou, Tian-shun; Xu, Guangli; Shen, Yanjun; Zhang-zhong, WU; Zhang, Ningning; Wang, Rui

doi:10.1016/j.enggeo.2013.04.010

Cited by 89 publications

(25 citation statements)

References 4 publications

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“…(a) Although the rupture zone may be confined to a single thin stratum, different parts experiencing different weathering, disturbances and stresses result in the spatial inhomogeneity of the mechanical properties (Hou et al, 2013). In particular, the rear part of the rupture zone begins to weaken as ground water infiltrates from the upper, well developed tension fractures, while the lower part remains strong, forming a locking section at the front of the future rockslide.…”

Section: Weakening Model Of the Rupture Surfacementioning

confidence: 99%

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

Tang

Zou

Xiong

et al. 2015

Engineering Geology

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Section: Weakening Model Of the Rupture Surfacementioning

confidence: 99%

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

Tang

Zou

Xiong

et al. 2015

Engineering Geology

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“…where τ is the shear strength (kPa); K is the quantum ring rate coefficient of determination (2.50 kPa/0.01 mm); and R is the unit of the dial test indicator readings (0.01 mm). Three replicate measurements were taken for each (1) www.nature.com/scientificreports/ layer. The shear strengths of the three soil layers in each treatment were then averaged to represent the shear strength of the root-soil system.…”

Section: Methodsmentioning

confidence: 99%

“…The rapid economic development in southwestern China in recent years has led to the construction of numerous hydropower projects, highways, and railroads that have contributed abundant high and steep anthropogenic slopes in alpine and subalpine regions. The slopes are characterized by severe soil erosion, low stability, and are prone to landslides 1,2 . Further, the slopes lead to various adverse ecological impacts including landscape fragmentation and the loss of species diversity 3 .…”

mentioning

confidence: 99%

The effect of Elymus nutans sowing density on soil reinforcement and slope stabilization properties of vegetation–concrete structures

Tan

Huang

Xiong

et al. 2020

Sci Rep

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Elymus nutans is an herbaceous plant that can be used to restore degraded alpine and subalpine ecosystems. Here, we evaluated how sowing density affects soil reinforcement and slope stabilization properties of vegetation–concrete structures. To investigate the optimal sowing density of E. nutans in vegetation–concrete applications for slope protection, six experimental treatments were established with different plant densities: control, I (1100 seeds/m2), II (2200 seeds/m2), III (3300 seeds/m2), IV (4400 seeds/m2), and V (5500 seeds/m2). Several parameters of plant growth in addition to soil reinforcement and slope stabilization properties were measured in each treatment, as well as the associations among parameters. As density increased, aboveground biomass continually increased, and plant heights, root surface areas, root lengths, and underground biomass all first increased and then decreased. In contrast, tiller numbers and the average root diameter gradually decreased with increasing density. Increased density also resulted in increased maximum water interception levels by aboveground stems and leaves. The maximum water interception by the aboveground stems and leaves was 41.75% greater in the highest density treatment (V) compared to the lowest density treatment (I). However, the enhancement of erosion resistance and soil shear strength first increased and then decreased as density increased, with maximal values observed in the medium-high density treatment (IV). Sowing density was highly correlated with aboveground biomass, plant heights, tiller numbers, and the maximum level of water interception by stems and leaves. Thus, sowing density directly influenced soil reinforcement and slope stabilization properties of aboveground plant components. However, density was not significantly correlated with belowground biomass, root lengths, root surface areas, the enhancement of erosion resistance, and soil shear strengths. Therefore, sowing density indirectly influenced soil reinforcement and slope stabilization of belowground plant components. Following from these results, we suggest that the optimal sowing density of E. nutans is approximately 4400 plants/m2 in their application within vegetation–concrete structures used for slope protection.

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“…The previous research shows that landslides cause more casualties in developing countries such as India, China, Nepal, Peru, Venezuela and the Philippines [2][3][4]. A landslide is related to seasonal heavy rainfall, erosion excavation at the foot of the slope, unreasonable surcharge at the top of the slope and an unscientific drainage arrangement [5][6][7][8]. These unfavorable factors will accelerate the sliding of a landslide [8].…”

Section: Introductionmentioning

confidence: 99%

Field Geological Investigations and Stability Analysis of Duanjiagou Landslide

Wang

Xia

Zhang

et al. 2020

IJGI

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This paper analyses the stability of the Duanjiagou landslide on the Bazhong to Guangan Expressway K134–K135 segment in China. The Duanjiagou landslide took place on 4 November 2015. In order to discover the cause of the landslide, we carried out field geological investigations. The indoor physical property experiments were performed by taking the undisturbed soil sample from the borehole cores. To study the strength of the soil, we carried out a saturation direct shear test and saturation residual shear test on sliding zone soil samples. According to the physical properties of soil and the saturated shear strength parameters of sliding zone soil, the stability was analyzed by the landslide force transmission method and numerical simulation method. The results showed that in the initial sliding stage, the safety factor obtained by using the average value of saturated shear strength parameters was in good agreement with the field observation situation. The landslide was at an unstable state. The softening of soil and roadbed excavation at the foot of the slope are the main reasons for landslides.

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Formation mechanism and stability analysis of the Houba expansive soil landslide

Cited by 89 publications

References 4 publications

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

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

The effect of Elymus nutans sowing density on soil reinforcement and slope stabilization properties of vegetation–concrete structures

Field Geological Investigations and Stability Analysis of Duanjiagou Landslide

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