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المؤلفAl-Marri, Saad Zayed
المؤلفPeach, Gary
المؤلفHameed, Furqan
تاريخ الإتاحة2023-08-27T05:58:09Z
تاريخ النشر2023
اسم المنشور2nd International Conference on Civil Infrastructure and Construction
الاقتباسAl-Marri S.Z., Peach G. & Hameed F., "Comparison of Geotechnical Investigation Results with Encountered Ground Conditions during Subsea Tunneling in Qatar", The 2nd International Conference on Civil Infrastructure and Construction (CIC 2023), Doha, Qatar, 5-8 February 2023, DOI: https://doi.org/10.29117/cic.2023.0068
الرقم المعياري الدولي للكتاب2958-3128
معرّف المصادر الموحدhttps://doi.org/10.29117/cic.2023.0068
معرّف المصادر الموحدhttp://hdl.handle.net/10576/46771
الملخصStarting in 2018, Musaimeer Pumping Station and Outfall Project (MPSO) was constructed to manage ground and storm water received from 270 km2 area of southern Doha, Qatar. The project consists of a pumping station, subsea tunnel, (constructed through Rus formation, Midra shale and Simsima limestone), riser shaft and diffuser bed structure. An Earth Pressure Balance (EPB) Tunnel Boring Machine (TBM) was used for subsea tunnelling where ground water inflows, mixed ground condition with the presence of vertical and lateral fractures connected to the seabed were encountered during tunnelling activity. This paper analyses the reliability of geotechnical investigation results and interpretations by comparison with encountered conditions. This will be beneficial to design a reliable geotechnical investigation programme for future projects of similar scope in the state of Qatar. Results and interpretations from drilled bore holes and geophysical survey provided an overall picture of underground conditions along the tunnel alignment, which identified the critical tunnelling areas for cutter head intervention and maintenance. These results were then compared with the built geotechnical conditions accessed by collecting data through the onboard TBM monitoring equipment, collecting rock mass samples, and performing geological face mappings during tunnelling activity. Comparison of pre-tendered investigation results with the built geotechnical conditions concluded that investigation results and encountered rock mass conditions were in line with each other. Geotechnical investigation programme followed for this project and interpretation as a result, made the tunnelling under sea to be carried out in more careful and low risk manner.
اللغةen
الناشرQatar University Press
الموضوعTBM Tunnelling
Subsea tunnelling
Geotechnical investigation
Encountered ground conditions
Qatar
العنوانComparison of Geotechnical Investigation Results with Encountered Ground Conditions during Subsea Tunnelling in Qatar
النوعConference Paper
الصفحات505-513
ESSN2958-3136
dc.accessType Open Access


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