Calibration of Adjustment Coefficient of the Viscous Boundary in Particle Discrete Element Method Based on Water Cycle Algorithm

Ma, Chunhui; Gao, Zhiyue; Cheng, Lin; Zhao, Tianhao

doi:10.3390/w14030439

Cited by 4 publications

(1 citation statement)

References 39 publications

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“…In recent years, many underground oil and gas storage caverns have been constructed in geological formations composed of compact rock around the world [25][26][27]. In petroleum engineering, the compact rock around the underground oil and gas storage caverns is usually in the saturated status via carrying out artificial water injection to further rise the leakproofness of caverns, aiming for preventing the leakage of oil and gas [28][29][30][31]. For the water-sealed underground oil and gas storage caverns, when experiencing engineering activities such as excavation of caverns, etc., the coupling effect between seepage and stress fields of the saturated surrounding compact is inevitable to occur, which has a significant influence on the stability of underground storage caverns [32][33][34][35].…”

Section: Of 20mentioning

confidence: 99%

Analysis of the Hydromechanical Properties of Compact Sandstone and Engineering Application

Tang

Zhang

Wang

et al. 2023

Water

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The paper proposes a method to simulate the mechanical behavior of compact rock considering hydromechanics by combining physical experiments and numerical analysis. The effectiveness of the constructed method is validated by the comparison between the numerical and physical results of triaxial shear experiments on sandstone in seepage conditions. Based on the validated method, the stability of underground water-sealed oil and gas storage caverns in surrounding compact sandstone during excavation is analyzed. The main findings are as follows: The intrinsic permeability of compact sandstone has a power function relationship with the porosity; the combination of the porous media elastic model and the modified Drucker–Prager plasticity model can preciously represent the mechanical properties of compact sandstone; the proposed method can accurately replicate the hydromechanical response of compact sandstone in seepage conditions; the effects of hydromechanical effects have significant impacts on the stability of surround compact sandstone during the excavation of underground water sealed oil and gas storage caverns, which causes the obvious increase in stress, deformation and plastic deformation zones of the surrounding compact sandstone and remarkable decrease in the stability safety factor.

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Section: Of 20mentioning

confidence: 99%

Analysis of the Hydromechanical Properties of Compact Sandstone and Engineering Application

Tang

Zhang

Wang

et al. 2023

Water

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A Water Cycle Algorithm for Optimal Design of IIR Filters

Mittal¹

2023

Lecture Notes in Networks and Systems

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Anti-skid durability of porous drainage asphalt mixture based on discrete element

Lin

Liu

2023

Proceedings of the Institution of Civil Engineers - Smart Infra

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Since late 20th century, China’s expressway construction has developed rapidly, and the mileage of expressways has become the world's first. However, the safety indicators of expressways, including skid-resistance and durability, decline with time. Public roads that have been in use for an extended period possess a higher level of danger to some extent. In order to improve the safety indicators such as skid-resistance and durability of the road, the discrete element method (DEM) is used to study the proportion of the asphalt mixture, and the spatial structure of the coarse aggregates and asphalt mortar are compared and analyzed. Relevant models are established to compare their pendulum values and structure-depth attenuation. The simulation results show that when the mixture ratio changes, the pendulum value also changes accordingly. When limestone replaces the fine aggregate in the andesite, its pendulum value is increased by 1.5%. When the fine aggregate is limestone and the surface polishing times do not exceed 3500 times, the 7/3S1 asphalt mixture has the best pendulum value. However, as the polishing times continue to increase, the mixture ratio also changes. Compared with the 7/3S1 asphalt mixture, the 8/2S1 asphalt mixture has better effect. When the fine aggregate is replaced by limestone, no matter what form the coarse aggregate is, the pendulum value has been improved to a certain extent comparing with the previous mixture. A2 S2, 5/5S2, 7/3S2 and 8/2S2 blends, compared with A2 A2, 5/5A2, 7/3A2 and 8/2A2 blends, the pendulum value was increased by 1.7 %, 0.5 %, 2.3 %, and 2.1 % respectively. The study shows that in different proportions of coarse aggregates, as the surface texture richness of the blended aggregate increases, the differences between the aggregates also increases, and skid-resistance and durability are also enhanced. The research results provide a blending method to increase the skid resistance and durability of asphalt pavement.

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Calibration of Adjustment Coefficient of the Viscous Boundary in Particle Discrete Element Method Based on Water Cycle Algorithm

Cited by 4 publications

References 39 publications

Analysis of the Hydromechanical Properties of Compact Sandstone and Engineering Application

Analysis of the Hydromechanical Properties of Compact Sandstone and Engineering Application

A Water Cycle Algorithm for Optimal Design of IIR Filters

Anti-skid durability of porous drainage asphalt mixture based on discrete element

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