Trenchless Technologies

The course covers the use of trenchless technologies, which is a versatile installation method for small infrastructure (gas, water, sewers, etc.). It is meant as an addition to other specialist courses and the topics studied here can also be applied in other courses. Next to the installation process and the design of the linings, the organisation of a TT project will be discussed.

The course will cover aspects of:

• Cables and ducts

• Geology and geotechnics in relation to boring techniques and bore fluids

• The technique of Horizontal Directional Drilling (HDD)

• The technique of Micro-tunnelling (MT)

• Boring equipment

• Measuring en steering equipment

• Technical calculations for HDD and Micro-tunnelling

• Technical calculations for stresses in pipelines

• Renovation of existing pipelines

• Research on trenchless technologies and innovative applications

• Role of the contractor and engineering office

• Influence of contract types on project execution

• Risks and risk management

• Case discussions

As part of the course, the students (in groups of max. 2 students) have to make a preliminary design and risk assessment for a river crossing of a large diameter pipeline, using HDD or micro-tunnelling. This design is based on the lecture notes as well as the relevant national codes and standards. The resulting design is discussed and commented during an (online) oral examination, during which also other topics from the course can be discussed. The assessment is based on the design assignment (100%).

Peer feedback is provided between groups during the assignment. Feedback from the lecturers and TA is provided in a review session at the end of the lecture series. On demand feedback is also an option.

The pass grade should be a minimum of 5.8

For more information on grading, see article 14 in the Rules and Guidelines (RGBE):

https://www.tudelft.nl/en/student/ceg-student-portal/education/education-information/educational-rules-and-regulations

Permitted Materials during Exam

The report for the design assignment can be used during the exam.