电渗注浆加固土遗址片状剥离实验研究(Ⅱ)：工艺优化与渗透模型构建

doi:10.3724/1000-6915.jrme.2024.0090

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摘要电渗注浆法以在均匀渗透半径与扩展渗透深度方面的优势而成为土遗址片状剥离病害的一种理想的加固方法，然而由于该方法尚处于实验阶段，存在电渗效率不高、有效渗透范围不清等制约其高质量推广应用的重要问题。研究通过5种供电–供液方式的电渗注浆加固实验优选出最佳电渗注浆方式，然后以优选的供电–供液方式进行不同通断液时间比的现场加固实验。基于实验结果经多元线性回归建立有效渗透范围二维模型，并在建立电渗注浆加固片状剥离控制方程的基础上，进行数值模拟结果、现场实验值与模型计算值三者的联合比对。研究结果表明：理想的电渗注浆方式为持续供电–间歇供液，且最佳通断比为6∶1；有效渗透范围受溶液总入渗量、土的孔隙率、通断比及电极间距的影响，其中0～1 cm内与电极间距等值，而1～10 cm内以4 cm为分段点服从不同斜率的线性规律。

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	崔凯1
	2
	李淑桓1
	王东华1
	马启鑫1
	韦鑫1

关键词 ：土力学, 电渗注浆, 片状剥离, 电渗效率, 固含量, 渗透范围

Abstract：The electroosmotic grouting method has become an ideal reinforcement method for the scaling off earthen sites due to its advantages in uniform penetration radius and extended penetration depth. However，due to the fact that this method is still in the experimental stage，there are important problems such as low electro-osmosis efficiency and unclear effective permeability range，which restrict its high-quality promotion and application. The best electroosmotic grouting method was selected through the electroosmotic grouting reinforcement experiments of five kinds of power supply-liquid supply methods，and then the field reinforcement experiments with different on-off liquid time ratios were carried out by the preferred power supply-liquid supply method. Based on the experimental results，a two-dimensional model of effective permeability range was established by multiple linear regression. On the basis of establishing the control equation of scaling off of electroosmotic grouting reinforcement，the numerical simulation results，field experimental values and model calculation values were compared. The results show that the ideal electroosmotic grouting method is continuous power supply-intermittent liquid supply，and the best on-off ratio is 6∶1，the effective permeability range is affected by the total permeability amount of the solution，the porosity of the soil，the on-off ratio and the electrode spacing. The effective permeability range is equivalent to the electrode spacing within 0–1 cm，while the effective permeability range within 1–10 cm obeys the linear law of different slopes with 4 cm as the segmentation point.

Key words： soil mechanics electroosmotic grouting scaling off electroosmotic efficiency solid content permeability range

引用本文:

崔凯1，2，李淑桓1，王东华1，马启鑫1，韦鑫1. 电渗注浆加固土遗址片状剥离实验研究(Ⅱ)：工艺优化与渗透模型构建[J]. 岩石力学与工程学报, 2025, 44(S1): 230-241.
CUI Kai1，2，LI Shuhuan1，WANG Donghua1，MA Qixin1，WEI Xin1. Experimental study on electro-osmosis grouting reinforcement of scaling off earthen sites(Ⅱ)：Process optimization and permeation model construction. , 2025, 44(S1): 230-241.

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https://rockmech.whrsm.ac.cn/CN/10.3724/1000-6915.jrme.2024.0090 或 https://rockmech.whrsm.ac.cn/CN/Y2025/V44/IS1/230

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