Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Evaluation and Application of Ground Surface Pre-Grouting in Mountain Tunnels
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.
Evaluation and Application of Ground Surface Pre-Grouting in Mountain Tunnels
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.
Evaluation and Application of Ground Surface Pre-Grouting in Mountain Tunnels
Xu, Hua (Autor:in) / Zhang, Peng (Autor:in) / Chen, Jiannan (Autor:in) / Sun, Runfang (Autor:in) / Liu, Yiwei (Autor:in)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 1-9
21.03.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Evaluation and Application of Ground Surface Pre-Grouting in Mountain Tunnels
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