Caisson Shafts

Caisson shafts ensure a more comfortable working environment with minimal ecological impact. Caisson shafts offer many advantages for microtunnelling projects: Little space is required on the ground surface around the launch and reception shafts, and no time is wasted on constructing additional support walls. As a result, caisson shafts can easily be sunk in urban, densely populated areas. At the- same time, this method causes minimal impact on the surrounding environment when, for example, tunnelling underneath a motorway. Furthermore, no dewatering is required: After the shaft has been sunk, the water is simply pumped from the bottom. Additionally, caisson shaft sinking is also highly economical, saving the costs for traffic diversions or even road closures. After the shaft has been sunk, the time and effort put into restoration works is relatively low.