Seitenbohrung
Seitenbohrung, or side drilling, is a construction and tunneling technique used to create horizontal or inclined openings from an existing main tunnel or shaft. This method is particularly useful for accessing specific locations that are not directly reachable from the main passage, such as service rooms, cross-passages, or ventilation shafts. Seitenbohrung can be performed using various boring machines, often smaller in scale than those used for main tunnel excavation.
The process typically involves advancing a tunnel boring machine (TBM) or a specialized drilling apparatus from
Advantages of Seitenbohrung include minimizing disruption to the main tunnel's operation during construction, reduced overall project