Project
Construction of the sewer along the upper and middle reaches of the River Berne (project section 5)
Client
Emschergenossenschaft Essen
Order volume Epping
€ 12.365.000,00 net
Construction period
2019-2022
Scope of service
450 m pipe jacking DN 2000 full-face Mixshield AVND in a single drive
380 m pipe jacking DN 2800 partial face under compressed air
89 m pipe jacking DN 2400 partial face under compressed air
1.130 m pipe jacking DN 2000 partial face under compressed air
1.122 m pipe jacking DN 1600 partial face under compressed air
Challenges
Urban alignment
Overpassing subway tunnel
Underpassing Deutsche Bahn railway tracks
Underpassing buildings
Underpassing the Berne river
curved alignments with radii of R = 480/500 m, R = 480 m, and R = 450 m
pipe jacking in groundwater with water pressure up to 1.5 bar
partial-face drives using the PNN method for UXO detection
Geology
Marl, sand, silt, groundwater
