漩涡灌浆技术的水泥浆渗透行为

IF 4.1 2区 工程技术 Q1 MECHANICS Physics of Fluids Pub Date : 2024-09-10 DOI:10.1063/5.0225944
Weiqun Liang, Xiaobin Chen, Lubo Tang, Jiasheng Zhang, Xinxin Zhang, Fantong Lin, Jun Cheng
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引用次数: 0

摘要

传统的压力灌浆技术是在稳定的压力条件下运行的,因此灌浆料很容易沿着优先路径流动。这导致灌浆渗透不均匀,增加了经济成本。本研究提出的漩涡灌浆技术可有效改善这一问题。为了验证漩涡灌浆的效果,还提出了一种扇形叶片工具。通过实验研究了灌浆渗透性能。比较了漩涡灌浆法和稳压灌浆法灌浆体的长度、宽度、高度、重量和均匀性。然后,通过透明圆盘可视化实验分析了漩涡灌浆的机理。结果表明,在不同的水灰比条件下,漩涡装置在 X、Y 和 Z 方向上的渗透长度比传统的直线装置分别增加了 43.3%、27.8% 和 45.8%,比扇形叶片装置分别增加了 57.3%、39.4% 和 55.6%。此外,漩涡装置比传统的直线装置增加了 54.9% 的灌浆石体重量,比扇形叶片装置增加了 91.0%,显著提高了填充效率。漩涡装置渗透的均匀系数比传统的直线装置和扇叶装置分别降低了 56.6% 和 51.0%,从而使灌浆分布更加均匀。透明圆盘可视化实验进一步揭示了漩涡装置在促进细颗粒迁移方面的优势,平均渗透距离显著增加,渗透形状更接近规则圆。漩涡装置的旋转流道带来了额外的旋转动量和多向穿透能力。由此产生的湍流加速了灌浆料与土壤基质的混合,促进了细颗粒的迁移,扩大了流动通道,减少了流动阻力。这一系列效应提高了渗透效率,减少了能量损失。这项研究对提高工程质量、施工效率和降低成本具有重要的实际应用价值。
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Cement slurry penetration behavior of swirl grouting technology
Traditional pressure grouting technology operates under steady pressure conditions, causing the grout to easily flow along preferential pathways. This results in uneven grout penetration and increased economic costs. This study proposes swirl grouting technology, which effectively improves this problem. To verify the effectiveness of swirl grouting, a fan-shaped blade tool was also proposed. The grout penetration performance was investigated through experimental studies. The length, width, height, weight, and uniformity of the grouted bodies produced by the swirl grouting method were compared with those produced by the steady pressure grouting method. Then, the mechanisms of swirl grouting were analyzed through transparent disc visualization experiments. The results demonstrated that, at different water–cement ratios, the swirl device increased the penetration length in the X, Y, and Z directions by 43.3%, 27.8%, and 45.8%, respectively, compared to the conventional straight device, and by 57.3%, 39.4%, and 55.6%, respectively, compared to the fan blade device. Moreover, the swirl device increased the weight of the grouted stone body by 54.9% compared to the conventional straight device and by 91.0% compared to the fan blade device, significantly enhancing filling efficiency. The uniformity coefficient of the swirl device permeation decreased by 56.6% and 51.0%, respectively, compared to the conventional straight device and the fan blade device, resulting in a more uniform grout distribution. The transparent disc visualization experiment further revealed the advantage of the swirl device in promoting the migration of fine particles, with a significant increase in average penetration distance and a penetration shape closer to a regular circle. The rotating flow path of the swirl device imparts additional rotational momentum and multidirectional penetration capabilities. The resulting turbulence accelerates the mixing of grout with the soil matrix, facilitating the migration of fine particles, expanding flow channels, and reducing flow resistance. This combination of effects enhances penetration efficiency and reduces energy loss. This study offers significant practical application value for improving engineering quality, construction efficiency, and reducing costs.
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来源期刊
Physics of Fluids
Physics of Fluids 物理-力学
CiteScore
6.50
自引率
41.30%
发文量
2063
审稿时长
2.6 months
期刊介绍: Physics of Fluids (PoF) is a preeminent journal devoted to publishing original theoretical, computational, and experimental contributions to the understanding of the dynamics of gases, liquids, and complex or multiphase fluids. Topics published in PoF are diverse and reflect the most important subjects in fluid dynamics, including, but not limited to: -Acoustics -Aerospace and aeronautical flow -Astrophysical flow -Biofluid mechanics -Cavitation and cavitating flows -Combustion flows -Complex fluids -Compressible flow -Computational fluid dynamics -Contact lines -Continuum mechanics -Convection -Cryogenic flow -Droplets -Electrical and magnetic effects in fluid flow -Foam, bubble, and film mechanics -Flow control -Flow instability and transition -Flow orientation and anisotropy -Flows with other transport phenomena -Flows with complex boundary conditions -Flow visualization -Fluid mechanics -Fluid physical properties -Fluid–structure interactions -Free surface flows -Geophysical flow -Interfacial flow -Knudsen flow -Laminar flow -Liquid crystals -Mathematics of fluids -Micro- and nanofluid mechanics -Mixing -Molecular theory -Nanofluidics -Particulate, multiphase, and granular flow -Processing flows -Relativistic fluid mechanics -Rotating flows -Shock wave phenomena -Soft matter -Stratified flows -Supercritical fluids -Superfluidity -Thermodynamics of flow systems -Transonic flow -Turbulent flow -Viscous and non-Newtonian flow -Viscoelasticity -Vortex dynamics -Waves
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