Theoretical and Experimental Validation for Calculating Permeation Diffusion Radius in Soil-Rock Mixtures

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-08-03 DOI:10.1007/s12205-024-0009-8

Zuliang Zhong, Jiayong Li, Congying Bie

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Abstract

Due to the considerable variation in the range of rock content of the soil—rock mixture, when grouting experiments were conducted according to the existing grouting theory, it was found that a large number of pores not entirely filled by the slurry existed in the concretions of the medium to high rock content backfill area. Therefore, the existing slurry permeation grouting diffusion equation was optimized by adding the filling factor (γ). Based on the Bingham fluid rheological equation and the Newtonian fluid rheological equation, the optimized calculation equations for Bingham fluid and Newtonian fluid permeation diffusion considering the filling factor (γ) were derived. Furthermore, the indoor grouting experiment data are compared and analyzed with the calculation results of the original formula and the optimized formula. The results show that when ignoring the unfilled pores, the original formula calculating the diffusion radius will be small; the calculation results of the optimized formula considering the filling factor (γ) are closer to the actual experiment results. Moreover, based on the calculation results of the optimized formula, the order of influencing factors of the permeation diffusion radius is rock content > void ratio > water—cement ratio > grouting pressure.

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计算土壤-岩石混合物渗透扩散半径的理论与实验验证

由于土岩混合物的岩石含量范围存在较大差异，在根据现有灌浆理论进行灌浆实验时，发现在中高岩石含量回填区的凝土中存在大量未被浆液完全填充的孔隙。因此，通过增加填充系数 (γ)，对现有的浆液渗透灌浆扩散方程进行了优化。在宾汉流体流变方程和牛顿流体流变方程的基础上，得出了考虑填充因子（γ）的宾汉流体和牛顿流体渗透扩散优化计算方程。此外，还将室内灌浆实验数据与原始公式和优化公式的计算结果进行了比较和分析。结果表明，在忽略未填充孔隙的情况下，原始公式计算的扩散半径会偏小；而考虑填充因子（γ）的优化公式计算结果更接近实际实验结果。此外，根据优化公式的计算结果，渗透扩散半径的影响因素依次为岩石含量>；空隙率>；水灰比>；注浆压力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.