TY - GEN
T1 - Studying the effects of gypsum karst cavities in tunneling
AU - Al Kaabi, M. R.
AU - Sousa, R. L.
N1 - Publisher Copyright:
© 2019 Taylor & Francis Group, London.
PY - 2019
Y1 - 2019
N2 - Abu Dhabi is expecting a huge growth over the next 20 years and is planning a massive integrated transportation system, including several modes of transportation to ensure that Abu Dhabi becomes a sustainable city on a global scale. Most of these structures are expected to encounter difficult ground conditions, which are a concern for construction both at the surface and underground. This study focuses on a ground hazard common in Abu Dhabi, gypsum dissolution and karst formation, and its impacts on subsurface infrastructure development. Numerical simulations to study the effect of gypsum cavities on tunneling are conducted using the finite element analyses with the PLAXIS 2D software and the geologic and construction data from the construction of the Strategic Tunneling Enhancement Programme (STEP) tunnels, in Abu Dhabi, UAE. Results of the analyses are presented graphically in charts that show the tunnel lining bending moment as functions of the tunnel geometry, cavity characteristics, construction parameters and properties of the ground. These graphs allow one to identify the most critical scenarios for tunneling through ground where cavities are present.
AB - Abu Dhabi is expecting a huge growth over the next 20 years and is planning a massive integrated transportation system, including several modes of transportation to ensure that Abu Dhabi becomes a sustainable city on a global scale. Most of these structures are expected to encounter difficult ground conditions, which are a concern for construction both at the surface and underground. This study focuses on a ground hazard common in Abu Dhabi, gypsum dissolution and karst formation, and its impacts on subsurface infrastructure development. Numerical simulations to study the effect of gypsum cavities on tunneling are conducted using the finite element analyses with the PLAXIS 2D software and the geologic and construction data from the construction of the Strategic Tunneling Enhancement Programme (STEP) tunnels, in Abu Dhabi, UAE. Results of the analyses are presented graphically in charts that show the tunnel lining bending moment as functions of the tunnel geometry, cavity characteristics, construction parameters and properties of the ground. These graphs allow one to identify the most critical scenarios for tunneling through ground where cavities are present.
UR - http://www.scopus.com/inward/record.url?scp=85068413026&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85068413026&partnerID=8YFLogxK
U2 - 10.1201/9780429424441-558
DO - 10.1201/9780429424441-558
M3 - Conference contribution
AN - SCOPUS:85068413026
SN - 9781138388659
T3 - Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art- Proceedings of the WTC 2019 ITA-AITES World Tunnel Congress
SP - 5275
EP - 5284
BT - Tunnels and Underground Cities
A2 - Peila, Daniele
A2 - Viggiani, Giulia
A2 - Viggiani, Giulia
A2 - Celestino, Tarcisio
T2 - World Tunnel Congress, WTC 2019 and the 45th General Assembly of the International Tunnelling and Underground Space Association, ITA-AITES 2019
Y2 - 3 May 2019 through 9 May 2019
ER -