Stretching the boundaries with a "slalom alignment" in the German Saarland region

Tech used:
MSS
Microtunneling

Radius:
180 m / 590 ft. (min. curve radius)
Diameter
Pipe ID: 2000mm/ 78.74 in.; Pipe OD: 2500mm/ 98.43 in.
Length:
1079 m / 3540 ft.
Illingen (Germany)
2023

The municipality of Illingen (Germany) planned to renovate the ‘Illingen-Wustweiler’ wastewater plant, responsible for the treatment of mixed water in the area of the Illingen town hall. This resulted in the following ‘Project 30: RÜB 8 - 1.0’. A significant part of this overhaul was the construction of the new sewer itself, whereby microtunneling was chosen as the desired construction method. Once the Belgian contractor K-Boringen got awarded with the execution, the long-distance drive decided to throw many challenges at them such as extremely tight curve radii in alternating directions, sticky geology in combination with high and low overburden, high skin friction which resulted in high jacking forces, and many more…   While the experience and knowledge of the contractor was crucial to overcome al the hurdles and should not be underestimated, receiving the feedback that MSS paid a key role in the success as well was a compliment our company received with great gratitude. Additionally, the project was also a worldwide first for the newly developed MSSTUnIS, whereby the navigation system runs imbedded in MSS and saves the user a screen in the control cabin.

Project Details

Project Name

Stretching the boundaries with a ‘slalom’ alignment in the German Saarland region (Monitoringsystem: MSS (Microtunneling Support System)

Pipe material

Reinforced Concrete

Location

Illingen (Germany)

Pipe length

1.5 & 3.0 m / 4.92 & 9.84 ft.

Usage / Purpose

Renovate the wastewater plant

Max. cover

Executed

2023

Geology

Rock, Fractured Rock, Silt, Clay, Mixed ground Groundwater present (up to 1.4 bar)

Special features

Low + High overburden [1.5 m; 50 m] Long distance Double s-curve Diverse ground conditions

Pressure transmission medium

Total length

1079 m / 3540 ft.

TBM

Herrenknecht AVND2000

Inner diameter

2000 mm / 78.74 in.

Project owner

AVI – Illingen (Gemeinde Illingen)

Outer diameter

2500 mm / 98.43 in.

Planner / Site management

Dipl.-Ing. Rudolf Kopper Ingenieurbüro GmbH

Alignment

Double S-Curved

Tunneling company

K-Boringen nv

Minimum curve radius

180 m / 590 ft.

Pipe manufacturer

Reference / Testimonial