Stability Reinforcement of Slopes Using Vegetation Considering the Existence of Soft Rock

Liu, Chungang; Bi, Huanjun; Wang, Dong; Li, Xiaoning

doi:10.3390/app11199228

Cited by 4 publications

(7 citation statements)

References 58 publications

(77 reference statements)

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“…Grasslands exceeded the cutoff value at an hourly rainfall of around 80 mm, while coniferous forests exceeded the cutoff value at an hourly rainfall of around 110 mm. Both forests and grasslands have functions that increase slope stability regardless of the state of soil moisture in the slope [6], but it has become quantitatively clear that forests increase slope stability to a certain extent compared to grasslands. However, the ability of forest to stabilize slopes is limited [6], so it should be noted that the forest does not suppress all cases of shallow landslides.…”

Section: Impact Of Vegetation On Shallow Landslidesmentioning

confidence: 99%

“…Both forests and grasslands have functions that increase slope stability regardless of the state of soil moisture in the slope [6], but it has become quantitatively clear that forests increase slope stability to a certain extent compared to grasslands. However, the ability of forest to stabilize slopes is limited [6], so it should be noted that the forest does not suppress all cases of shallow landslides. Moreover, it has been pointed out that the spatial structure of forests has a significant impact on slope stability.…”

Section: Impact Of Vegetation On Shallow Landslidesmentioning

confidence: 99%

“…Vegetation can enhance the stability of slopes by increasing soil strength through their root systems [4,5]. However, its effect is considered limited for failures occurring deeper than the root system [6]. The concept of utilizing the functions of ecosystems such as vegetation for disaster prevention and mitigation is known as ecosystem-based disaster risk reduction (Eco-DRR), and discussions towards its implementation have been held in recent years [7].…”

Section: Introductionmentioning

confidence: 99%

“…On the relationship between vegetation differences such as forests and grasslands and shallow landslides, Kokutse et al [34] reported that slope stability increased by 7.1% for grasslands and 18.7% for mature forests when compared to a vegetation-less condition, based on physical model analyses of four types of vegetation states, including grasslands and mature forests. Liu et al [6] stated that both forests and grasslands have a function that increases slope stability, irrespective of the soil moisture content on the slope. On the other hand, Koyanagi et al [35] conducted an assessment of the distribution and scale of landslides that occurred in forests and grasslands during the Kumamoto earthquake, indicating that landslides in grasslands occurred in steeper areas than those in forests.…”

Section: Introductionmentioning

confidence: 99%

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Impact of Vegetation Differences on Shallow Landslides: A Case Study in Aso, Japan

Asada,

Minagawa

2023

Water

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Climate change has increased the frequency and scale of heavy rainfall, increasing the risk of shallow landslides due to heavy rainfall. In recent years, ecosystem-based disaster risk reduction (Eco-DRR) has attracted attention as one way to reduce disaster risks. Vegetation is known to increase soil strength through its root system and reduce the risk of shallow landslides. To reduce the risk of shallow landslides using vegetation, it is necessary to quantitatively evaluate the effects that vegetation has on shallow landslides. In this study, we constructed a generalized linear model (GLM) and random forest (RF) model to quantitatively evaluate the impact of differences in the vegetation, such as grasslands and forests, on the occurrence of shallow landslides using statistical methods. The model that resulted in the lowest AIC in the GLM included elevation, slope angle, slope aspect, undulation, TWI, geology, and vegetation as primary factors, and the hourly rainfall as a trigger factor. The slope angle, undulation, and hourly rainfall were selected as significant explanatory variables that contribute positively to shallow landslides. On the other hand, elevation and TWI were selected as significant explanatory variables that contribute negatively to shallow landslides. Significant differences were observed among multiple categories of vegetation. The probability of shallow landslide in secondary grasslands was approximately three times that of coniferous and broadleaf forests, and approximately nine times that of broadleaf secondary forests. The landslide probability of shrubs was approximately four times that of coniferous and broadleaf forests, and approximately ten times that of broadleaf secondary forests. The results of constructing the RF model showed that the importance was highest for the hourly rainfall, followed by geology, then elevation. AUC values for the GLM and RF model were 0.91 and 0.95, respectively, indicating that highly accurate models were constructed. We quantitatively showed the impact of differences in vegetation on shallow landslides. The knowledge obtained in this study will be essential for considering appropriate vegetation management to reduce the risk of future shallow landslides.

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Section: Impact Of Vegetation On Shallow Landslidesmentioning

confidence: 99%

Section: Impact Of Vegetation On Shallow Landslidesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of Vegetation Differences on Shallow Landslides: A Case Study in Aso, Japan

Asada,

Minagawa

2023

Water

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“…It is widely used in the construction of foundation pits, traffic slopes, mining slopes and other engineering constructions. In general, the anti-slide pile has played an important role in engineering disaster prevention and reduction [1][2][3]. However, adverse changes in construction conditions and geological and natural environmental factors have an important influence on the bearing stability of the anti-slide pile and can increase the sliding force and displacement of the anti-slide pile's slope structure.…”

Section: Introductionmentioning

confidence: 99%

Effect of Soil Creep on the Bearing Characteristics of Soil Slope Reinforced with CFRP and Anti-Slide Piles

2023

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In order to research the displacement characteristics and stability of a soil slope reinforced with carbon-fiber-reinforced plastic (CFRP) and anti-slide piles, the displacement composition, aging deformation and failure mode of a soil mass were analyzed. According to the Mohr–Coulomb strength criterion, a new nonlinear, accelerated creep model of soil mass was founded with the addition of a self-building M-C plastic element. Furthermore, a viscoplastic strain analytical formula of an M-C plastic element was obtained, and the tensile deformation characteristics of a CFRP sheet were also discovered under a landslide thrust creep load. According to the environmental conditions of the anti-slide pile, the CFRP was arranged along the load-bearing side of the pile to control deformation. Combining the calculation example, it is shown that the horizontal displacement of the soil slope’s composite structure decreases by approximately 40% with CFRP reinforcement. Furthermore, for the first two calculation conditions, after one year, the maximum horizontal displacement decreased by 50% and increased by 10%, respectively. Simultaneously, the overall safety factor increased by 31.3% without soil creep properties. On the contrary, the overall safety factor was reduced, and the slope has a tendency toward unstable failure. Moreover, there is no through plastic zone in the slope. The stability of the reinforced slope and the bearing capacity of the pile are related to the CFRP method. Simultaneously, the structure can reduce the costs and construction difficulty of anti-slide piles in a complex environment surrounded by the soil creep effect.

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Analysis of Excavation Stability and Reinforcement Treatment of the Cutting Slope under the Influence of Old Goaf

Han

et al. 2022

Applied Sciences

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To analyze the excavation stability and reasonable reinforcement measures of cutting slope with a goaf collapsed roadway and collapsed mining face, the finite element software Midas GTS NX was used to model and analyze the change in the slope stability coefficient under different excavation slope ratios. Combined with the scope of the project land, it is proposed that the slope ratio of grades 1–3 (close to the top of the cut) is 1:1.5, while the slope ratio of grades 4–6 (close to the bottom of the cut) is 1:1, to excavate the slope. During the excavation process, the change in the plastic zone after each level of slope excavation was further analyzed, and the control variable method was used to analyze the influence of the collapsed roadway and the collapsed mining face on the slope stability. We found that the collapsed mining face was one of the main factors affecting the stability of the slope. During the reinforcement of the slope, the reinforcement effects of different schemes were analyzed, and we found that the slope can be stabilized by reinforcement of the third- and fourth-level slopes adjacent to the collapsed mining face. In this study, the old goaf and cutting slope excavation are combined, and the stability of slope excavation with a goaf collapsed roadway and collapsed mining face is analyzed by coupling. This research provides a scientific basis for the stability analysis of cutting slope excavation in old goafs in the future and has great practical engineering significance.

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Stability Reinforcement of Slopes Using Vegetation Considering the Existence of Soft Rock

Cited by 4 publications

References 58 publications

Impact of Vegetation Differences on Shallow Landslides: A Case Study in Aso, Japan

Impact of Vegetation Differences on Shallow Landslides: A Case Study in Aso, Japan

Effect of Soil Creep on the Bearing Characteristics of Soil Slope Reinforced with CFRP and Anti-Slide Piles

Analysis of Excavation Stability and Reinforcement Treatment of the Cutting Slope under the Influence of Old Goaf

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