Stability Analysis of S-RMS under Seismic Loading

Han, Jing; Liu, Bao Xian; Zhang, Dong Liang

doi:10.4028/www.scientific.net/amr.261-263.1336

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…The synchronized rise in charcoal concentration with the rice husk peak (Figs. 4B and 4D), accompanied by human fossil remains (43), unearthed pottery and stone tools (44)(45)(46), and rice husk phytoliths in the middle to lower reaches of the Yangtze River (16), explain wild rice exploitation by humans during this period.…”

Section: Exploitation Of Wild Rice At ~24 Kyr Bpmentioning

confidence: 99%

Rice’s trajectory from wild to domesticated in East Asia

Zhang,

Jiang,

et al. 2024

Science

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Rice ( Oryza sativa ) serves as a staple food for more than one-third of the global population. However, its journey from a wild gathered food to domestication remains enigmatic, sparking ongoing debates in the biological and anthropological fields. Here, we present evidence of rice phytoliths sampled from two archaeological sites in China, Shangshan and Hehuashan, near the lower reaches of the Yangtze River. We demonstrate the growth of wild rice at least 100,000 years before present, its initial exploitation as a gathered resource at about 24,000 years before present, its predomestication cultivation at about 13,000 years before present, and eventually its domestication at about 11,000 years before present. These developmental stages illuminate a protracted process of rice domestication in East Asia and extend the continuous records of cereal evolution beyond the Fertile Crescent.

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Section: Exploitation Of Wild Rice At ~24 Kyr Bpmentioning

confidence: 99%

Rice’s trajectory from wild to domesticated in East Asia

Zhang,

Jiang,

et al. 2024

Science

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“…In the aspect of the model test, the theoretical and empirical equations are used as bases to obtain the physicomechanical properties of the accumulation and analyze its deformation stability by establishing relevant models (Zhou et al, 2017;Wang and Zhang, 2019). In terms of numerical and macroscopic numerical simulations, the finite element method (Afifipour and Moarefvand, 2014;Liu et al, 2018) and finite difference method (Sun et al, 2019;Han et al, 2011) can be used to simulate the mechanical properties and deformation mechanism of soil-rock mixture simply and effectively. Subsequently, the internal structure of the soil-rock mixture in the mesonumerical simulation is relatively complex and exhibits discontinuity and heterogeneity (Xu et al, 2008;Gao et al, 2021).…”

Section: Cemented Conglomerate Accumulation 1407mentioning

confidence: 99%

“…, 2018) and finite difference method (Sun et al. , 2019; Han et al. , 2011) can be used to simulate the mechanical properties and deformation mechanism of soil–rock mixture simply and effectively.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation study on erosion collapse failure mechanism of cemented conglomerate accumulation

Shi

Zhang

et al. 2023

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PurposeCemented conglomerate accumulation is a weak and heterogeneous medium that occurs in western China. It consists mainly of argillaceous cement that loses strength rapidly upon contact with water, leading to collapse instability failure. Its deformation failure mechanism is complex and poorly understood. In this paper, the erosion failure mechanism of cemented conglomerate accumulation is investigated.Design/methodology/approachThe collapse failure process after erosion of the slope foot for typical cemented conglomerate accumulation is studied based on field investigation using the particle discrete element method. And how the medium composition, slope angle and cementation degree influence the failure mode and process of the cemented conglomerate accumulation is examined.FindingsThe foot erosion of slope induces a tensile failure that typically manifests as “erosion at the foot of slope – tensile cracking at the back edge of slope top – integral collapse.” The collapse failure is more likely to occur when the cemented conglomerate accumulation has a higher rock content, a steeper slope angle or a weaker cementation degree.Originality/valueA model based on rigid blocks and disk particles to simulate the cemented conglomerate accumulation is developed. It shows that the hydraulic erosion at the foot of the slope resulted in a different failure mechanism than that of general slopes. The results can inform the stability management, disaster prevention and mitigation of similar slopes.

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Analysis on Structural Characteristics of Grout and Rock Distribution in Complex Geological Mixtures after Grouting Reinforcement and Its Mechanical Strength

Zhou

Liu

2021

Rock Mech Rock Eng

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Stability Analysis of S-RMS under Seismic Loading

Cited by 5 publications

References 3 publications

Rice’s trajectory from wild to domesticated in East Asia

Rice’s trajectory from wild to domesticated in East Asia

Numerical simulation study on erosion collapse failure mechanism of cemented conglomerate accumulation

Analysis on Structural Characteristics of Grout and Rock Distribution in Complex Geological Mixtures after Grouting Reinforcement and Its Mechanical Strength

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