No document
Search & filter
Search for a publication
Search & filter
List of products by author: Anna Monika Najder Olliver
-
Challenges during Micro-tunnelling by Pipe-jacking methodology - A case study
Abstract: Micro-tunnelling is a trenchless technique which has several advantages in urban areas due to the compact design and modern equipment. It does however impose some challenges such as difficulties in case of MTBM breakdowns due to inadequate working space in small diameter tunnels and the need for unplanned rescue shaft excavations to carry out cutter-head repairs. In Qatar, Doha South Sewer...
0,00 € -
Challenges during shaft excavations in urban areas - A case study from Doha South
Abstract: Deep shaft excavation in urban areas can be challenging due to several factors such as adverse geological conditions, ground water pressure and existing utilities or backfilled trenches near the shaft. In Qatar, Doha South Sewer Infrastructure Project (DSSIP) and contract LIS-01 of ASHGHAL (Public Works Authority, Qatar) has been associated with the excavation of 171 shafts with diameters...
0,00 €
