Physical modeling of grout spreading in discrete fractured rocks

Masoud Torkan, Alireza Baghbanan, Hamid Hashemolhesieni, Mikael Rinne

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

One of the best techniques employed in ground reinforcement is grouting which concerns complex characteristics and factors. There are few reported researches about physical modeling of grout spreading in fractured media. However, they have not addressed the effect of multiple operational and structural parameters on grout spreading in different discrete fracture network patterns around an injection wellbore. Since there are many different parameters, which control grout spreading in fractured media, laboratory experiments can help to identify the most effective ones. In this research, Taguchi experimental design was used to study grouting on laboratory scale. The experiments consider various discrete fracture network features. Fracture network, grout viscosities, injection pressure, and time were considered to calculate grout spreading in a pipeline system. According to the statistical analysis and the confident level of the statistical tests, the effect of operation parameters on grouting is more significant compared to that of the geometrical properties of fractured rock mass. In other words, geometrical parameters of fracture network affect grouting process to some extent but the impact of operational parameters is more dominant.

Original languageEnglish
Title of host publicationISRM 9th Nordic Grouting Symposium, NGS 2019
PublisherSuomen rakennusinsinöörien liitto RIL
Pages60-68
Number of pages9
ISBN (Electronic)9789517586481
Publication statusPublished - 1 Jan 2020
MoE publication typeA4 Article in a conference publication
EventISRM Nordic Grouting Symposium - Helsinki, Finland
Duration: 2 Sep 20193 Sep 2019
Conference number: 9

Conference

ConferenceISRM Nordic Grouting Symposium
Abbreviated titleNGS
CountryFinland
CityHelsinki
Period02/09/201903/09/2019

Keywords

  • Grout
  • Physical modeling
  • Rock mass
  • Spreading
  • Taguchi Design of Experiments

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