Eighth International Conference on Case Histories in Geotechnical Engineering
Evaluation and Application of Ground Surface Pre-Grouting in Mountain Tunnels
Publication: Geo-Congress 2019: Soil Improvement (GSP 309)
ABSTRACT
This study evaluates the quality of ground surface pre-grouting (GSPG) in shallow-buried sections of mountain tunnels. A fuzzy analytic hierarchy process (FAHP), which enables objective evaluation based on multiple criteria, is presented. Three controlled factors (i.e., integrity, continuity, and robustness of rock mass after grouting) are selected in the criterion layer of the analytic hierarchy process (AHP) model in which five indices are established, including increased ultrasonic wave speed and unconfined compressive strength, reduction rate of permeability, and curve types of the water pressure test. The performance of the model is evaluated on the basis of the field test results of a GSPG project in a shallow-buried section of the Tongluoshan Tunnel in the southwestern mountainous region of China. The test data of the five indices are applied to evaluate the quality of grouting by using the FAHP. The results of the FAHP can be classified as “good” because they are consistent with the field test data, thus verifying the reliability of this method.
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Information & Authors
Information
Published In
Geo-Congress 2019: Soil Improvement (GSP 309)
Pages: 1 - 9
Editors: Christopher L. Meehan, Ph.D., University of Delaware, Sanjeev Kumar, Ph.D., Southern Illinois University Carbondale, Miguel A. Pando, Ph.D., University of North Carolina Charlotte, and Joseph T. Coe, Ph.D., Temple University
ISBN (Online): 978-0-7844-8211-7
Copyright
© 2019 American Society of Civil Engineers.
History
Published online: Mar 21, 2019
Published in print: Mar 21, 2019
ASCE Technical Topics:
- Business management
- Compressive strength
- Construction engineering
- Construction methods
- Continuum mechanics
- Decision making
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Field tests
- Geology
- Geomechanics
- Geomorphology
- Geotechnical engineering
- Grouting
- Material mechanics
- Material properties
- Materials engineering
- Mountains
- Practice and Profession
- Pressure (type)
- Rock masses
- Rock mechanics
- Solid mechanics
- Strength of materials
- Tests (by type)
- Tunnels
- Water pressure
Authors
Metrics & Citations
Metrics
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