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TBM tunnelling under the Suez Canal – Port Said tunnels in challenging ground conditions
Author(s) -
Rizos Dimitrios,
Williams Derek,
Fouda Ahmed,
Amin Tarek,
Aboudshiesh Mohamed,
Nicola Anis Dimitry
Publication year - 2018
Publication title -
geomechanics and tunnelling
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.317
H-Index - 18
eISSN - 1865-7389
pISSN - 1865-7362
DOI - 10.1002/geot.201700063
Subject(s) - suez canal , port (circuit theory) , carriageway , civil engineering , human settlement , quantum tunnelling , geology , mining engineering , engineering , geotechnical engineering , environmental science , water resource management , physics , mechanical engineering , optoelectronics , waste management
The Port Said Tunnels Project consists of twin road tunnels crossing the Suez Canal with a planned capacity of 2,100 mixed vehicles/hour in each direction. The dual carriageway tunnels are an important part of the Suez Canal Region Development Plan, which will connect the Sinai with other Egyptian provinces to provide a gateway for investment opportunities and speed up the development of Sinai province. The project is located 19 km south of Port Said city, near the northern entrance of the Suez Canal. The tunnels are constructed using slurry shield TBMs in difficult ground conditions, including the presence of methane gas. This paper demonstrates the main challenges encountered during tunnelling and the measures taken to mitigate potential risks during construction and to control long‐term differential settlements in the upper, very soft soil. The tunnels are connected by two cross passages which are being constructed using ground freezing and conventional tunnelling.