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Numerical and analytical analyses of the effects of different joint and grout properties on the rock mass groutability
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering.
2013 (English)In: Tunnelling and Underground Space Technology, ISSN 0886-7798, E-ISSN 1878-4364, Vol. 38, 11-25 p.Article in journal (Refereed) Published
Abstract [en]

In this study, an attempt has been made to propose a numerical model to predict grout flow and penetration length into the jointed rock mass using UDEC. The numerical model is adjusted using practical data and presence analytical methods for grouting process. Input data included geomechanical parameters along with grout properties obtained from a case study. The effect of rock mass properties as joint hydraulic aperture, roughness, spacing, trace length, dipping and grout properties as yield value, viscosity and grout pressure was considered on grout flow rate and penetration length. Barton-Bandis joint model has been used to assign joint roughness and strength (JRC and JCS) in the modeling. The results were in a good agreement with analytical and field database. A general function is defined to demonstrate the effects of rock and grout properties on penetration length of grout.

Place, publisher, year, edition, pages
2013. Vol. 38, 11-25 p.
Keyword [en]
Barton-Bandis joint model, Bingham fluid, Distinct element code, Grout flow rate, Grout penetration length, Rock mass groutability
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:kth:diva-126076DOI: 10.1016/j.tust.2013.05.005ISI: 000328234300002Scopus ID: 2-s2.0-84878793949OAI: oai:DiVA.org:kth-126076DiVA: diva2:641621
Note

QC 20130819

Available from: 2013-08-19 Created: 2013-08-19 Last updated: 2017-12-06Bibliographically approved

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