A comprehensive study of fines migration in internally unstable natural gas hydrate reservoirs

Song, Yuqi; Zhang, Decheng; Ranjith, P.G.; Zhou, Zongqing; Wu, Bailin; Kong, Lie; Chen, Liuxin; Huang, Jicheng

doi:10.1016/j.powtec.2023.119193

Cited by 8 publications

(1 citation statement)

References 73 publications

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“…Based on the analysis of the two models, the different formation mechanisms and theoretical criteria of water inrush and mud inrush hazards were revealed. The outcomes may also help to better understand internal erosion and fines transportation flows through porous media in various industries, including but not limited to the prediction of sand production in oil and natural gas industry 20 , 21 , the suffusion process of granular soils in geological structures 22 .…”

Section: Introductionmentioning

confidence: 99%

Development and experimental validation of analytical models for water and mud inrushes through a filled karst conduit

Wu,

Yang,

Jing

2024

Sci Rep

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Water or mud inrush has become a common geological disaster during tunnel construction in karst areas. To study forming process and mechanism of water and mud inrushes through a filled karst conduit, water inrush and mud inrush model tests were carried out with a self-developed 3D model test system. The results show that the forming processes of water inrush and mud inrush have different forming modes. For water inrush, the forming process follows: flowing instability of filling material particles—formation of water inrush channel—water inrush occurring; while for mud inrush, the forming process follows: stability—sliding instability of the whole filling material suddenly—mud inrush occurring. Accordingly, a local instability model of critical hydraulic pressure causing water inrush and an integral sliding instability model of critical hydraulic pressure causing mud inrush were established respectively. The two analytical models reveal the mechanism of water inrush and mud inrush experiments to an extent. The calculated critical hydraulic pressures for water inrush and mud inrush are in good agreement with the test results. The distinguishment of water inrush and mud inrush through a karst conduit was discussed based on the critical hydraulic pressure and the evolution law of seepage water pressure in tests, and a criterion was given. The research results might provide guidance for the forecast of water and mud inrush disasters during the construction of tunnels in karst area.

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Section: Introductionmentioning

confidence: 99%

Development and experimental validation of analytical models for water and mud inrushes through a filled karst conduit

Wu,

Yang,

Jing

2024

Sci Rep

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The effect of lateral thrust on the progressive slope failure under excavation and rainfall conditions

Yu,

Zhao,

Gong

et al. 2024

Nat Hazards

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Large landslides can involve the multiple failures of regional slopes. To understand the effect of lateral thrust caused by the failure of one slope on its surroundings, the failures of two adjacent highway slopes in Guangdong Province, China, were investigated in detail. The interactive failure processes and landslide morphological characteristics of the two slopes were first analyzed based on the on-site investigation. Then, a plane mechanical model of a large-scale slope was established to evaluate the significant influence of the lateral thrust generated by the west slope acting on the east excavated slope. Furthermore, the extrusion effect of the west slope was modelled under the alternate excavation disturbance and rainfall by transferring the thrust forces onto the interface elements, and the induced failure mechanism and instability mode of the east slope under lateral thrust were reproduced numerically. The results show that the compression-shear failure occurred at the middle and rear slope bodies because of the lateral thrust, which led to the formation of a thrust landslide and the final instability of the east slope.

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A numerical approach for CFD-DEM coupling method with pore network model considering the effect of anisotropic permeability in soil-rock mixtures

Cao,

Song,

Sun

et al. 2025

Computers and Geotechnics

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A comprehensive study of fines migration in internally unstable natural gas hydrate reservoirs

Cited by 8 publications

References 73 publications

Development and experimental validation of analytical models for water and mud inrushes through a filled karst conduit

Development and experimental validation of analytical models for water and mud inrushes through a filled karst conduit

The effect of lateral thrust on the progressive slope failure under excavation and rainfall conditions

A numerical approach for CFD-DEM coupling method with pore network model considering the effect of anisotropic permeability in soil-rock mixtures

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