砂土介质中颗粒浆液的渗滤系数及加固机制研究

doi:10.13722/j.cnki.jrme.2016.1510

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Abstract

Based on mass conservation equation，linear infiltration law，grout density equations and boundary conditions，a quantitative formula of infiltration coefficient l and a theoretical model of reinforcing strength were proposed for grout suspensions in sandy soil medium. Theoretical calculation of infiltration coefficient was obtained according to grout density and diffusion distance in grouting test. Then the variation law of l was analyzed and compared with the measured values of similar experiments. Through uniaxial compressive strength test，consolidation strength at different distance was studied. Then difference analysis was conducted between experimental value and theoretical value. The results show that，infiltration coefficient increases with grout time in certain conditions，and not a constant parameter in traditional studies. There is a significant negative correlation between consolidation strength and infiltration coefficient when the diffusion distance is the same. The consolidation strength deceases along grout penetration distance，and strength decreasing rate can be up to 9.2 kPa/cm. Deviation between theoretical value and experimental value is ±22%，which presents a higher coincidence degree. The results have practical value and can provide reference for construction design.

Key words： soil mechanics sandy soil medium grout suspension infiltration coefficient reinforcing mechanism

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	Articles by authors
	LI Shucai1
	FENG Xiao1
	LIU Rentai1
	LI Kexian1
	2
	LI Wei1
	ZHANG Shijie1
	SUI Haitong1
	WANG Xiaochen1

Cite this article:

LI Shucai1,FENG Xiao1,LIU Rentai1, et al. Study on infiltration coefficient and reinforcing mechanism of grout suspension in sandy soil medium[J]. , 2017, 36(S2): 4220-4228.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.1510 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/IS2/4220

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