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Experimental and Numerical Investigations of Ground Deformation Using Chemical Grouting for Pipeline Foundation

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Abstract

Based on experimental and numerical investigations, the present paper focuses on under ground scope (UGS) chemical grouting method that can actually improve the pipeline surrounding foundation to solve pipeline saggy damage. According to the experimental results, a solution-type injection material could make lager soil deformation, using less total slurry amount than suspension-type injection material. Therefore, a suspension-type injection material with shorter gel time is more suitable for the UGS method, making it more effective to reinforce the pipeline foundation and restore pipelines. The results of some patterns of injection tests revealed relationship between the behavior of the grouting material and the deformation of the soil. It is found that the material can be injected into a foundation by fracture grouting if the permeation coefficient is lower than 1.00 × 10−3 mm/s. The situation was analyzed by using 2-D finite element method analysis software Phase2, and the analysis result proposes that the real data and simulation data are nearly the same in impermeable soil. Furthermore, even if the construction object is permeable soil, it can also be become impermeable soil by two phases grouting: soil improvement grouting and restoration grouting.

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Acknowledgments

The authors gratefully acknowledge the valuable discussions with Mr. Masashi Komura and Mr. Shuichi Fujita. In addition, we thank Dr. Masatomo Ichinose for valuable suggestions and important feedback for the experimental result.

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Authors and Affiliations

  1. Department of Earth Resources Engineering, Graduate School of Engineering, Kyushu University, Fukuoka, 819-0395, Japan

    Hideki Shimada, Yanlong Chen, Koichi Araki, Takashi Sasaoka & Kikuo Matsui

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  1. Hideki Shimada
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  2. Yanlong Chen
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  3. Koichi Araki
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  4. Takashi Sasaoka
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  5. Kikuo Matsui
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Correspondence to Yanlong Chen.

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Shimada, H., Chen, Y., Araki, K. et al. Experimental and Numerical Investigations of Ground Deformation Using Chemical Grouting for Pipeline Foundation. Geotech Geol Eng 30, 289–297 (2012). https://doi.org/10.1007/s10706-011-9467-0

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  • DOI: https://doi.org/10.1007/s10706-011-9467-0

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