Abstract
In this project, a concept for a trenchless sewer replacement machine is investigated. Existing
technologies are analysed and the choice is made to focus on the replacement of nonreinforced
sewerage systems with a large diameter (¸ 800mm). Furthermore, it is shown that
most trenchless replacement methods work on similar principles. Most existing replacement
methods initially remove a pipe, then, directly behind the removal object, a new pipe for
replacement is pushed or pulled in from a distance. The maximal replacement length as well
as the capability of existing systems to replace curved and non-circular shaped sections of pipe
are limited. This is due to the fact that existing systems either push or pull a replacement pipe
from the top surface into the underground.
The approach in this project is the creation of a pipe directly behind a cutting module. The
proposed trenchless concept could extend limitations of existing pipe replacement systems.
Experts form the municipality of Rotterdam have been interviewed and a use-case has
been provided. Problems, parameters and requirements are identified and set-up based on
information about existing trenchless technologies and expert interviews. As a result, it has
been decided to split the design concept into four modules. These modules are named after
the main function they perform. Namely: Cut, Create, Clamp and Transport.
Concepts are proposed for each of the four modules. Simple calculations, simulations and
small scale experiments are used to get insight into the feasibility of the modules.
technologies are analysed and the choice is made to focus on the replacement of nonreinforced
sewerage systems with a large diameter (¸ 800mm). Furthermore, it is shown that
most trenchless replacement methods work on similar principles. Most existing replacement
methods initially remove a pipe, then, directly behind the removal object, a new pipe for
replacement is pushed or pulled in from a distance. The maximal replacement length as well
as the capability of existing systems to replace curved and non-circular shaped sections of pipe
are limited. This is due to the fact that existing systems either push or pull a replacement pipe
from the top surface into the underground.
The approach in this project is the creation of a pipe directly behind a cutting module. The
proposed trenchless concept could extend limitations of existing pipe replacement systems.
Experts form the municipality of Rotterdam have been interviewed and a use-case has
been provided. Problems, parameters and requirements are identified and set-up based on
information about existing trenchless technologies and expert interviews. As a result, it has
been decided to split the design concept into four modules. These modules are named after
the main function they perform. Namely: Cut, Create, Clamp and Transport.
Concepts are proposed for each of the four modules. Simple calculations, simulations and
small scale experiments are used to get insight into the feasibility of the modules.
| Original language | English |
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| Awarding Institution |
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| Supervisors/Advisors |
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| Award date | 7 Sep 2017 |
| Place of Publication | Enschede |
| Publisher | |
| Publication status | Published - 18 Dec 2018 |