2D CFD-DEM simulations for injection of cement-based grout - The effect of particle adsorption

S. Sakakibara, T. Koyama, H. Shimizu

研究成果: Conference contribution

抄録

Grouting is a widely used method to seal and/or reduce permeability of fractured rock masses around underground structures. However, the filtration and penetration mechanism of cement-based grout have not been clarified sufficiently yet due to complicated physical and chemical processes of grouting. Therefore, the grout material and injection parameters such as injection pressure and water/cement ratio (W/C) are usually determined empirically by technical experts at the injection site. In this paper, for better understanding of the penetration and filtration mechanism of cement-based grout through rock fractures, the two-dimensional numerical model of coupled Computational Fluid Dynamics and the Distinct Element Method (CFD-DEM) was developed and the effect of particle adsorption on the filtration and penetration mechanism was numerically investigated. The simulation results clearly show that the effect of particle adsorption on the movement of cement particles and the amount of injected cement particles is significant.

本文言語English
ホスト出版物のタイトルISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014
編集者 Kaneko, Kodama, Shimizu
出版社International Society for Rock Mechanics
ページ1959-1966
ページ数8
ISBN(電子版)9784907430030
出版ステータスPublished - 2014 1 1
イベント8th Asian Rock Mechanics Symposium, ARMS 2014 - Sapporo, Japan
継続期間: 2014 10 142014 10 16

出版物シリーズ

名前ISRM International Symposium - 8th Asian Rock Mechanics Symposium, ARMS 2014

Other

Other8th Asian Rock Mechanics Symposium, ARMS 2014
CountryJapan
CitySapporo
Period14/10/1414/10/16

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

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