Deep and inclined Shafts

Shallow shafts for metro and urban projects

• Entrance and reception shafts for TBM drives incl. soft eye technique or as part of deep excavations for stations added subsequently
• Circular and rectangular shafts
• Retaining wall systems such as pile walls and diaphragm walls in soft soil / groundwater conditions
• Special function shafts such as peanut-shaped shafts or rescue shafts

Deep shafts in rock and soft ground

• Deep shafts >1000 m as intermediate points of access for long tunnels
• Deep vertical shafts of 400 m with dia. of up to 12 m
• Deep shafts of 120 m in depth and up to 30 m excavation size in soft soil

Raise boring and reaming shafts

• Raise Bore shafts with upper and lower access, up to 800 m deep
• Reaming bore (after raise drilling) by drill & blast or through mechanised excavation techniques

Consultation services and support during shaft sinking

• Consultation services regarding water ingress prevention, pre-grouting and waterproofing
• Optimisation of ventilation and energy consumption
• Maintenance, safety and risk management during construction and operation of shaft sinking and shaft hoisting equipment

Specification of hoisting equipment

• Specification of shaft hoisting equipment
• Specification of state of the art vertical and
• horizontal logistics equipment

Tender and contract management

• Specification and evaluation of tender documents
• Contract management and owner consultation services for shaft construction and shaft logistics
• Expert knowledge in international standards applied in shaft sinking and hoisting

• Employ proven expert knowledge to reduce your project risks and avoid exceeding construction cost budget
• Benefit from value engineering and project optimisation based on solid track record during both design and construction phase
• Ensure maximum transport capacity, reduce your longterm operations and maintenance costs