Abstract
This paper presents an assessment of the impact of tunnelling of the M5 Metro line in Bucharest, and its associated risks on Dambovita river development located in the influence zone of tunnelling operation. During the metro performance the undercrossing of the hydraulic works related to the Dambovita River was required. The Dambovita River hydraulic development is made of 2 main components – the upper clean water channel and the sewage/drainage system cassette, placed below (the base slab of the channel representing the roof of the cassette). On the left river bank, the B0 collector is an old structure with uncertain technical condition Tunnelling in proximity of existing development introduces deformations in both structures and in turn induces additional axial and bending forces. In modern mechanized tunnelling, ground convergence is controlled through balancing the earth pressure at the tunnel face. Reducing ground deformation can consequently lower the additional deformations and forces and lessen the associated construction risk. In this paper, a detailed finite element modelling was performed to simulate the sequence of construction works. The model was calibrated based on the measured settlements behind the face. Based on model results the undercrossing area of influence is revealed. Recommendations regarding the tunnelling works are made in order to avoid any damages to the existing facilities.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
