A Novel Double-layer System for Infiltration Control and Improvement in the Stability of Expansive Soil Slopes

Liu, Xiyin; Xu, Li-Hua; Zhuang, Yan-Feng

doi:10.1007/s40891-023-00425-2

Cited by 3 publications

(2 citation statements)

References 20 publications

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“…Hewitt and Daniel indicated that after freeze-thaw cycling, the GCL retained its protective properties for expansive soil slopes [120]. The research was conducted on a double-layer soil system composed of soils with different permeabilities; the results showed that its drainage efficiency was more than 90%, indicating that this system would effectively ensure the stability of expansive soil slopes [121]. Capillary barrier systems (CBS) follow a similar approach and are widely used in landfill and slope protection; therefore, this system can be considered suitable for application to expansive soil slopes [122][123][124][125].…”

Section: Waterproofing and Water Blockingmentioning

confidence: 99%

“…The limitation of swelling-shrinkage deformation refers to the use of physical reinforcement or strengthening measures, such as retaining walls, anchors, anti-slip piles, and geosynthetics, to limit the swelling deformation of expansive soils and to reduce the adverse effects of swelling-shrinkage on slopes. These measures include both flexible and The research was conducted on a double-layer soil system composed of soils with different permeabilities; the results showed that its drainage efficiency was more than 90%, indicating that this system would effectively ensure the stability of expansive soil slopes [121]. Capillary barrier systems (CBS) follow a similar approach and are widely used in landfill and slope protection; therefore, this system can be considered suitable for application to expansive soil slopes [122][123][124][125].…”

Section: Limitation Of Swelling-shrinkage Deformationmentioning

confidence: 99%

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Failure Mechanisms and Protection Measures for Expansive Soil Slopes: A Review

Luo,

2024

Sustainability

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Due to the significant hydrophilicity and cracking properties of expansive soils, expansive soil slopes are prone to destabilization and landslides after rainfall, seriously threatening the safety of buildings, highways, and railroads. Substantial economic losses often accompany the occurrence of expansive soil slope disasters; thus, it is of great significance to understand the slope failure mechanisms experienced by expansive soil slopes and to prevent expansive soil slope disasters. In this paper, the current research status of the landslide failure mechanism of expansive soil slopes is systematically reviewed based on three research methods: field test, model test, and numerical simulation. The failure mechanisms of expansive soil slopes and the main influencing factors are summarized. Based on the failure mechanisms, three protection principles (waterproofing and water blocking, swelling–shrinkage deformation limitation, and crack inhibition and strength enhancement) that can be followed for disaster prevention of expansive soil slopes are proposed. The research status and advantages and disadvantages of these protection methods are reviewed, and future researchable directions of the stability of expansive soil slopes and slope protection methods are explored. Based on the previous work, a new flexible ecological slope protection system with a double waterproof layer is proposed for expansive soil slopes to realize ecological, efficient, and long-term protection. This paper thus aims to provide technical reference for the prevention and control of slope engineering disasters in expansive soil areas.

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Section: Waterproofing and Water Blockingmentioning

confidence: 99%

Section: Limitation Of Swelling-shrinkage Deformationmentioning

confidence: 99%

Failure Mechanisms and Protection Measures for Expansive Soil Slopes: A Review

Luo,

2024

Sustainability

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Novel protection systems for the improvement in soil and water stability of expansive soil slopes

Ma,

He,

et al. 2023

J. Mt. Sci.

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Analysis of ecological prevention and control technology for expansive soil slope

Tao,

Wen,

Bian

et al. 2024

Front. Earth Sci.

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For the expansion soil slope in the JiangHuai area before the disposal of the neglect of expansion of the weak defects and slope disposal after the poor long-term stability of the current situation. This study investigates the ability of ecological slope protection technology to cope with the destabilizing geohazard of expansive soil slopes. Analyzing the collapse reasons of weak expansive soil slopes in the JiangHuai region based on the reinforcement project of expansive soil slopes along highways in the JiangHuai region, combined with actual engineering research, a “storage-resistance” water regulation ecological prevention and control technology is proposed. The feasibility and sustainability of the ecological slope protection technology is discussed in terms of its principles and influencing factors, and the protection effect is verified by combining numerical simulation and field test methods. Research findings suggest that the “storage-resistance” technology effectively prevents rainwater infiltration, particularly under light rain conditions, with continuous blocking capability. Under rainstorm conditions, it can prevent infiltration for about 4 h, significantly enhancing slope stability. Slope rate variations show no significant impact on reinforced slope stability, with maximum deformation occurring at the slope’s foot after rainfall. Reinforcement plans should prioritize strengthening support at the slope’s base. Proper selection and optimization of technical parameters can lead to more economical and sustainable solutions while extending protection time. Field trials confirm the suitability of the “storage and blocking” water regulation ecological control technology for the JiangHuai region, particularly where light rain prevails. These findings suggest that ecological control techniques for expansive soil slopes can effectively regulate slope moisture changes and reduce the geohazard risk of expansive soil slope instability.

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A Novel Double-layer System for Infiltration Control and Improvement in the Stability of Expansive Soil Slopes

Cited by 3 publications

References 20 publications

Failure Mechanisms and Protection Measures for Expansive Soil Slopes: A Review

Failure Mechanisms and Protection Measures for Expansive Soil Slopes: A Review

Novel protection systems for the improvement in soil and water stability of expansive soil slopes

Analysis of ecological prevention and control technology for expansive soil slope

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