基于土体非线性压密效应的劈裂注浆机制分析

doi:10.13722/j.cnki.jrme.2015.0565

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Abstract In the process of split grouting，the soil on both sides of the split channel is being compressed. The relationship between the stress and strain is nonlinear in the compression process of soil. A new model of relationship between the soil stress and strain was established to describe the nonlinear characteristics in the compression process of soil. The process of split grouting was simplified into the horizontal radiation circle. Based on the nonlinear model of compression and considering the coupling effect at the interface between soil and slurry，a theoretical model of split grouting was established. The spatial distribution equation of width of the split channel was derived，and the relationship among the grouting pressure，width of split channel and radius of grouting diffusion was obtained. After comparing with the result from the linear relationship of stress and strain，the nonlinear relationship of stress and strain was shown to be necessary. The model test of split grouting process was performed. The width of split channel attenuated along the diffusion radius. The calculated and measured the thickness of grouting vein are at the same order of magnitude and theory was thus proved reasonable.

Key words： soil mechanics split grouting nonlinear characteristics of compression process width of split channel model test of grouting process

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	Articles by authors
	ZHANG Lianzhen1
	LI Zhipeng1
	2
	ZHANG Qingsong1
	LIU Rentai1
	ZHANG Xiao1
	YU Wensheng3

Cite this article:

ZHANG Lianzhen1,LI Zhipeng1,2, et al. Split grouting mechanism based on nonlinear characteristics of compression process of soil#br#[J]. , 2016, 35(7): 1483-1493.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.0565 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/I7/1483

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