Model test study of soil grouting effect on shield tunnel longitudinal structural behavior

Engineering Geology, Год журнала: 2025, Номер unknown, С. 107912 - 107912

Опубликована: Янв. 1, 2025

Язык: Английский

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Grouting diffusion characteristics in rough sandstone fracture with flowing water: Insights from NMR experimental investigation

Tunnelling and Underground Space Technology, Год журнала: 2025, Номер 157, С. 106372 - 106372

Опубликована: Янв. 8, 2025

Язык: Английский

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Experimental Study on Grouting Diffusion Law of Tunnel Secondary Lining Cracks Based on Different Slurry Viscosities

Applied Sciences, Год журнала: 2025, Номер 15(4), С. 1955 - 1955

Опубликована: Фев. 13, 2025

To investigate the diffusion law of ultrafine cement slurry (UCS) with different water–cement ratios in tunnel second lining cracks during grouting, grouting was carried out by experimental and theoretical analysis methods this study. Through collection data experiment time history, morphological characteristics based on viscosities were obtained, which divided into three patterns: circular zone, excessive elliptical zone. Furthermore, spatiotemporal variation rules radius secondary obtained as well. By analyzing values under each direction x+, x−, y+, y−, critical ξ found to be 0.8, affected value vertical upward y+ direction. Meanwhile, when completed, maximum using Moreover, equation is established. The research results can accurately predict pattern slurry.

Язык: Английский

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Study on direct shear mechanical characteristics of grouted-filled jointed coal using discrete element method

Engineering Analysis with Boundary Elements, Год журнала: 2024, Номер 169, С. 106048 - 106048

Опубликована: Ноя. 20, 2024

Язык: Английский

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Study on Construction Optimization Method of Tunnel Crossing Fault Fracture Zone

Periodica Polytechnica Civil Engineering, Год журнала: 2025, Номер unknown

Опубликована: Янв. 15, 2025

When a highway tunnel intersects fault fracture zone, the excavation process disrupts surrounding weak and fragmented rock mass, compromising stability of zone. This study compares deformation stress distribution using reserved core soil method, central diaphragm (CD) cross (CRD) method during through zones. Among these, CRD is identified as safest construction technique. Additionally, to address significant when tunneling zones, impact various pre-support advance reinforcement techniques on mass analyzed. By comparing full-ring grouting with optimized zone approach, findings demonstrate that significantly reduces disturbance excavation, thereby enhancing overall mass.

Язык: Английский

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Research on the Mechanism and Dip Angle Effect of Grouting Reinforcement for Fractured Rock Mass with Expansive Slurry

Опубликована: Янв. 1, 2025

Язык: Английский

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Analysis of grout radial propagation in water-saturated rough-walled rock fractures

International Journal of Rock Mechanics and Mining Sciences, Год журнала: 2025, Номер 190, С. 106101 - 106101

Опубликована: Апрель 7, 2025

Язык: Английский

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Research on the mechanism and dip angle effect of grouting reinforcement for fractured rock mass with expansive slurry

Theoretical and Applied Fracture Mechanics, Год журнала: 2025, Номер unknown, С. 104961 - 104961

Опубликована: Апрель 1, 2025

Язык: Английский

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Estimating rock fracture characteristics based on determined mechanical properties and simulation parameters calibration methodology

Theoretical and Applied Fracture Mechanics, Год журнала: 2025, Номер unknown, С. 104984 - 104984

Опубликована: Май 1, 2025

Язык: Английский

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Experimental study on the design of a fault-resistant buffer layer for diversion tunnels traversing active faults

Engineering Geology, Год журнала: 2025, Номер unknown, С. 108165 - 108165

Опубликована: Июнь 1, 2025

Язык: Английский

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