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Displacement infiltration diffusion model of power-law grout as backfill grouting of a shield tunnel
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In this article, a cylindrical infiltration diffusion model is used for backfill grouting in a metro tunnel. And power-law fluid grouts are used as the study object.Abstract:
Shield tunnel is widely adopted in the metro construction, and backfill grouting is the significant part. With power-law fluid grouts as the study object, a cylindrical infiltration diffusion model...read more
Citations
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Failure analysis and treatments of a loess tunnel being constructed in ground fissure area
TL;DR: Based on the collapse of a tunnel in Xi'an Metro Line 3 near a ground fissure, potential causes and corresponding mechanisms were analyzed in this paper , which indicated that hydraulic erosion induced loose pressure and crack-rich soil below the initial support were mainly attributed to be the triggering force of the collapse.
Journal ArticleDOI
Failure behavior and reinforcing design of degraded tunnel linings based on the three-dimensional numerical evaluation
TL;DR: In this paper, the failure behavior and reinforcing design of degraded tunnel linings with double void diseases were investigated, and the effect of void disease on the three-dimensional distribution of inner force was explored.
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Model study on backfill grouting in shield tunnels based on fractal theory
TL;DR: In this paper, the authors used fractal theory to study the backfill grouting of a shield tunnel and found significant merit in the feature expression of forms of matter in nature.
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Two-stage column–hemispherical penetration diffusion model considering porosity tortuosity and time-dependent viscosity behavior
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Theoretical Research on Sand Penetration Grouting Based on Cylindrical Diffusion Model of Tortuous Tubes
TL;DR: In this paper , a cylindrical diffusion model of tortuous tubes is proposed to characterize the diffusion process of penetration grouting in the sand layer, based on the penetration continuity equation, active steady-state penetration differential equation of Bingham slurry and the pressure distribution function of slurry in the diffusion region.
References
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Journal ArticleDOI
Transient Flow of Non-Newtonian Power-Law Fluids in Porous Media
Chi U. Ikoku,Henry J. Ramey +1 more
TL;DR: In this article, a new partial differential equation has been derived to describe the flow of a slightly compressible, non-Newtonian, power-law fluid in a homogeneous porous medium.
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Field measurements of grout pressures during tunnelling of the sophia rail tunnel
TL;DR: In this paper, grout pressure distribution is dominated by injection during drilling, but this distribution changes when drilling stops and buoyancy forces start to exert an influence, and the influence increases further away from the injection points.
Journal Article
Research on diffusion of grouting and basic properties of grouts
TL;DR: In this paper, a diffusion model for grouting is proposed to predict groutability period of grouts, and the concept of plastic strength is used to predict the groutingability period.
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Half-spherical surface diffusion model of shield tunnel back-fill grouting based on infiltration effect
TL;DR: In this paper, a half-spherical surface diffusion model considering the infiltration effect of back-fill grouting in shield tunnel construction was developed, and the model was then used to derive formulae based on soil porosity and volume fractions of grout grains to determine distributions of grouting pressure and define a concept of effective grout diffusion radius.
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Investigation into the effects of two component grout properties on surface settlements
TL;DR: In this article, the effect of grout properties on surface settlement and surface settlement control in the Tabriz subway line 2 by FLAC3D software were studied, and the results of the laboratory tests for numerical modeling of grouts were used in software.