裂隙岩体注浆中的浆液–岩体耦合效应分析

doi:10.13722/j.cnki.jrme.2015.0975

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Abstract According to theory of unloading-loading process for rock mass and grouting migration function of parallel fracture，theoretical model is established for jointed rock grouting considering one-way coupling effect of grout and rock mass，and interaction between grout and surrounding rock during grouting are carefully studied. Results show that，grouting in jointed rock mass is companied by the process of grout pressure unloading and re-loading the fracture. After the rock mass are totally unloaded，fracture aperture will increase with grout pressure. The increment drops along with spreading distance almost linearly，with a larger drop rate for smaller fracture. The unloading area is larger than grout spreading area，and the coupling effect is more obvious for smaller fractures. Adjacent fractures influence each other，leading to the larger one open further and the smaller one tends to close. Thus，spreading distance in the small fracture is limited or cannot injected，while in large the fracture grout spreads is too far and thus of no effect. Sealing efficiency cannot be improved only increase grouting pressure. Results may provide reference to jointed rock grouting project.

Key words： rock mechanics grout migration fluid-solid coupling grouting project

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	Articles by authors
	ZHENG Zhuo
	LI Shucai
	LIU Rentai
	ZHU Guangxuan
	ZHANG Lianzhen
	PAN Dong

Cite this article:

ZHENG Zhuo,LI Shucai,LIU Rentai, et al. ANALYSIS OF COUPLING EFFECT BETWEEN GROUT AND ROCK MASS DURING JOINTED ROCK GROUTING[J]. , 2015, 34(S2): 4054-4062.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.0975 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/4054

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