膏浆平面裂隙动水注浆扩散模型研究

doi:10.13722/j.cnki.jrme.2018.1339

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Abstract In order to explore the diffusion model of paste slurry in great numbers of plane crack containing moving water，the formula of paste slurry diffusion radius was derived by taking Bingham fluid as the research object firstly. The formula was based on the generalized Darcy?s law and the theory of mechanics，and could analyze the effect of self-gravity on diffusion radius of paste slurry. In addition，the laboratory model test was conducted to prove the formula，and the error between the test results and the theoretical calculated results was less than 10%. Then，the influences of different factors on diffusion radius were analyzed for the foundation pit leakage stoppage project of subway station. And the results showed that the effects of grouting pressure，slurry yield stress and fracture radius on slurry diffusion radius were significant and the changing rate of the diffusion radius was greater than 60%. At last，the field test was conducted，and the error between the field test results and the theoretical calculated results was less than 10%. Therefore，the diffusion model established in this paper was of great significance to grouting projects including great numbers of plane crack containing moving water.

Key words： geotechnical engineering paste slurry planar fracture of high density dynamic water grouting Bingham fluid diffusion model diffusion radius

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	Articles by authors
	WANG Lijuan1
	2
	LI Kai1
	2
	ZHANG Jinjie1
	2
	FU Ping1
	2
	ZHAO Weiquan1
	2

Cite this article:

WANG Lijuan1,2,LI Kai1, et al. Paste slurry planar fracture dynamic water grouting diffusion model research[J]. , 2019, 38(S2): 3404-3411.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2018.1339 OR https://rockmech.whrsm.ac.cn/EN/Y2019/V38/IS2/3404

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