🌍 Land applications: urban and industrial use
The terrestrial microtunneling applications are used in urban or industrial environments where it is necessary to cross existing infrastructures -such as roads, railways or utility networks- without open excavation. They are frequently used in sewage, water supply and subway technical pipelines.
🌊 Submerged applications: marine and inland waterway environments
The submerged applications are used in projects under bodies of water, such as submarine emissariesseawater intakes for desalination plants or river crossings. They require tunnel boring machines adapted to hydrostatic pressure, protection against water ingress and more complex geotechnical conditions.
✅ Main differences
Geological conditions: greater complexity in submerged media
Sealing and pressure requirementsvital in aquatic environments
Site logistics: vessels, pontoons or coastal installations
Applied technology: hydroshields and pressurized shield systems
Specific regulationsenvironmental protection and protected areas
Read more about our marine and terrestrial applications here.
You can also check the ITA-AITES technical report on underwater works to meet international standards.
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