Serviceability of cut slope and embankment under seasonal climate variations

Apriyono, Arwan; Yuliana, Yuliana; Kamchoom, Viroon

doi:10.1007/s11600-022-00953-x

Cited by 7 publications

(3 citation statements)

References 67 publications

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“…Vegetation can provide mechanical root reinforcement and is widely used as an eco‐friendly alternative for slope stabilization (Apriyono et al, 2022; Burak et al, 2021; Chen, Wong, Wang, & Wong, 2021; Kamchoom & Jotisankasa, 2019; A. K. Leung et al, 2016; Ng et al, 2016, 2017). Plant roots have strong resistance (primarily provided by plant cell walls) against pulling (Kamchoom et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Potentials of mycorrhizal fungi in altering eight biomechanical properties of plant roots

Chen,

Kamchoom,

et al. 2023

Land Degrad Dev

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Arbuscular mycorrhizal (AM) fungi are ubiquitous and impactful symbionts of most land plants and can regulate essential ecological processes. AM fungi can increase the cellulose content of root cell walls and hence the root tensile strength of grass. How AM fungi can alter other essential biomechanical properties is not clear. This study aims to study the contribution of AM fungi in altering biomechanical properties by comparing mycorrhizal and non‐mycorrhizal roots. We inoculated three fungal species to vetiver grass (Chrysopogon zizanioides) for comparison. Eight root biomechanical properties (i.e., yield strain, yield stress, break strain, tensile strength, Young's modulus, plastic modulus, plastic strain, and toughness) were determined for each root using a newly developed Fortran language‐based program. Inoculating AM fungi decreased both Young's modulus and plastic modulus by 23% and 17%, respectively, versus control, although it was species‐dependent. Yield stress was not significantly affected, but tensile strength was increased by 7%–17% upon fungal symbiosis. Together with the increases in break strain by 15%–20%, mycorrhizal roots possessed a notably higher toughness than non‐mycorrhizal roots by up to 36%. Greater root cohesion of mycorrhizal roots confirmed the enhanced (1.5‐fold) factor of safety in the soil‐root system. Our findings imply that AM fungi are of significant interest in plant biomechanics and geotechnical engineering. Applying AM fungi on soil slopes has considerable potential to improve vegetation and stability of green slopes.

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Section: Introductionmentioning

confidence: 99%

Potentials of mycorrhizal fungi in altering eight biomechanical properties of plant roots

Chen,

Kamchoom,

et al. 2023

Land Degrad Dev

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“…Given the fact that climate change is already causing significant changes in precipitation patterns with more frequent and intense droughts and rainfall events, this can result in a severe shortage of water available to plants, which can impact their growth and productivity [12,13]. Additionally, it can also lead to increased cracks, which can contribute to soil erosion and instability [11,14]. Biochar's ability to modify the water seepage and retention in biochar-amended soil (BAS) is of critical importance as water is a vital component for the transport of nutrients to plants and the survival of the soil microbial community [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Impacts of Biochar Amendment and Soil Compaction on Unsaturated Hydraulic Properties of Silty Sand

2023

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The application of biochar as an environmentally friendly additive for agricultural soils has recently gained significant attention. However, the influence of biochar addition on unsaturated hydraulic behavior at high suction ranges (i.e., exceeding 100 kPa) remains largely understudied. This study investigates the impact of biochar addition on the unsaturated hydraulic properties of biochar amended soil (BAS). The effects of biochar content, particle size, and soil compaction on the unsaturated hydraulic properties of BAS were also considered. Peanut shell biochar was utilized in this investigation and was amended into a compacted silty sand with distinct particle size groups. Soil water retention curves and unsaturated permeability were measured through a series of evaporation tests. Results demonstrate that the impact of soil compaction on the unsaturated hydraulic properties of BAS diminishes at high suction range, regardless of biochar particle size and content. A high degree of compaction reduces the saturated permeability of BAS by minimising soil macropores. On the other hand, incorporating high biochar contents with fine particles into the soil enhances the reduction of unsaturated permeability and the improvement of water holding capacity, thereby making biochar an effective application in soil for sustainability of the agroecological environment.

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“…The MJS method has the advantages of omni-directional, high-pressure jet grouting construction; high-quality, large-diameter piles; low impact on the environment; and low mud pollution. The MJS method has the significant advantages of all-round high-pressure jet grouting construction, high quality with large pile diameter, a small impact on the surrounding environment, and low mud pollution and has been massively applied in various underground engineering construction scenarios [26][27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Stability Analysis and Safety Factors of the Excavation Face of a Pipe Screen Tunnel in a Soft Soil Area

Pan,

Wang,

Diao

et al. 2023

Applied Sciences

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With the rapid development of urban rail transit and underground space construction, the advantages of the concealed excavation method are gradually highlighted in the urban center area affected by a complex engineering environment. At present, the pipe curtain method with a flexible section and wide application of the soil layer is being widely used in engineering, but the research on the stability of the excavation face during the construction of the pipe curtain method in soft soil areas still has not formed a complete system. Therefore, this paper analyzes the stability of the excavation face under different reinforcement conditions and the influence of different spacing, numbers, and strength of MJS (metro jet system) zones on the stability of the excavation face of the pipe curtain method based on the actual project of the Guiqiao Road Station of the Shanghai Metro, China, and gives a reference for the reinforcement of the palm face in the excavation process of the pipe curtain method in soft soil areas. The study shows that the safety coefficient of the excavation face decreases with the increase in the slope angle of the excavation face, with the increase in spacing of the MJS zone, and with the increase in height of the MJS zone arrangement, while the safety coefficient of the excavation face increases with the increase in strength of the MJS zones themselves and the increase in the strength of the soil between the MJS zones. Further, the machine learning model is applied to predict the stability of the excavation face under different cases, and the relevant fitting accuracy is above 0.9, which can predict the stability of the excavation better.

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Serviceability of cut slope and embankment under seasonal climate variations

Cited by 7 publications

References 67 publications

Potentials of mycorrhizal fungi in altering eight biomechanical properties of plant roots

Potentials of mycorrhizal fungi in altering eight biomechanical properties of plant roots

Investigating the Impacts of Biochar Amendment and Soil Compaction on Unsaturated Hydraulic Properties of Silty Sand

Stability Analysis and Safety Factors of the Excavation Face of a Pipe Screen Tunnel in a Soft Soil Area

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