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Formation Mechanism of Slurry Consolidated Body in Different Grouting Media under Dynamic Water Conditions by the Test-simulation Method

  • Geotechnical Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

This study proposes the Test-simulation Method to investigate the formation mechanism of slurry consolidated body in different grouting media under dynamic water conditions, which utilizes the test system to study the basic laws, and the numerical simulation to reveal the mechanism. Firstly, a test system for grouting under dynamic water conditions was developed, which can be used to grout in both porous media and parallel-fissure media. And the effects of water velocity and grouting rate on the slurry-consolidated-body forms were studied by this test system. Secondly, COMSOL Multiphysics was used to simulate the test process, and shapes of the consolidated body in numerical simulation were analyzed and compared with those in the model test, which proved the feasibility of the numerical method. Finally, the variation law of two-phase flow velocity during the grouting process was further studied by numerical simulation, in order to reveal the formation mechanism of the consolidated body. The results show that the slurry consolidated body presents an approximate ‘Fusiform’ shape in the porous medium, while presents a ‘U-shape’ in the parallel-fissure medium. And the final form of the slurry consolidated body is constructed with the joint action of water velocity and grouting rate.

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Acknowledgments

This work was supported by the National Natural Science Foundation of China (grant number 51574223).

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Authors and Affiliations

  1. State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, 221116, China

    Changyu Xu & Lijun Han

  2. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, 221116, China

    Lijun Han

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  1. Changyu Xu
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Correspondence to Lijun Han.

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Xu, C., Han, L. Formation Mechanism of Slurry Consolidated Body in Different Grouting Media under Dynamic Water Conditions by the Test-simulation Method. KSCE J Civ Eng 27, 169–180 (2023). https://doi.org/10.1007/s12205-022-0709-x

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  • DOI: https://doi.org/10.1007/s12205-022-0709-x

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