考虑多孔介质迂回曲折效应的幂律流体柱形渗透注浆机制

doi:10.13722/j.cnki.jrme.2020.0627

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Abstract The tortuosity effect of porous media has an important influence on penetration diffusion and grouting effect. A seepage equation of power-law fluid considering tortuosity effect of porous media was established，and the column penetration grouting mechanism was analyzed. Based on computer programming technologies，a three-dimensional numerical simulation program for column penetration grouting of power-law fluid considering tortuosity effect of porous media was developed by using secondary development with COMSOL multiphysics platform and Darcy¢s law，and numerical simulation of penetration grouting process of power-law cement grouts with different water-cement-ratios into gravel soils was carried out. Finally，comparisons among theoretical analysis，model experiments and numerical simulations were performed. Research results show that theoretical calculation values and numerical simulation values of the diffusion radius considering the tortuosity effect of porous media are closer to the model experiment values than those without considering the tortuosity effect，indicating that the developed equation better reflects column penetration grouting diffusion laws of power-law fluid into porous media. Research achievements can provide theoretical support and technical guidance for design and construction of practical grouting engineering in porous media stratums.

Key words： seepage mechanics porous media tortuosity effect power-law fluid column diffusion penetration grouting mechanism

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	Articles by authors
	YANG Zhiquan1
	LU Jie1
	WANG Yuan1
	ZHANG Zhiwei1
	YANG Yi1
	ZHU Yingyan1
	2
	ZHANG Jie3
	GUO Yongfa4
	CHEN Xingui5

Cite this article:

YANG Zhiquan1,LU Jie1,WANG Yuan1, et al. Column penetration grouting mechanism for power-law fluids considering tortuosity effect of porous media[J]. , 2021, 40(2): 410-418.

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http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0627 OR http://rockmech.whrsm.ac.cn/EN/Y2021/V40/I2/410

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