Rectangular Pipe Jacking

In case of shorter tunnels or smaller underground structures in urban areas, most of the construction projects employ the cut-and-cover method. This method bears a couple of disadvantages, such as interruption of traffic, requirement of extensive additional measures to stabilize surrounding buildings, emission of dust and noise. To reduce these side effects of construction activities, the application of rectangular pipe jacking excavation has been developed. As common in conventional pipe
jacking, a small launch and receipt shaft must be excavated, which can usually be done
without traffic closing.

Machine Design

In the 1970s rectangular pipe jacking was developed and successfully applied for the first time in a Tokyo underground passage. After several years’ research and development, rectangular pipe jacking construction technology with widths of more than 6 m and heights exceeding 3 m became popular in Asia. At present, rectangular pipe jacking is applicable in a range of soil stratum and weak rock stratum (UCS: 0 to 10 MPa), with Earth Pressure Balance (EPB) excavation mode.

EPB rectangular pipe jacking machines consist of cutter head, drive system, shield structure, screw conveyor,...

Related articles:

Issue 03/2018 France

Modernization of Drinking Water System In Plobsheim with Pipe Jacking

In the little French town of Plobsheim near Strasbourg, a joint venture consisting of the contractors Valentin and SMCE Réha has modernized the municipal drinking water system. Several pipe jacking...

more
Issue 01/2017

Special Demands for Pipe Jacking beneath Rail Tracks

Motivation The need to modernise and expand the existing line networks of the telecommunications and energy supply companies is growing in keeping with the advance in infrastructural networking of...

more
Issue 05/2016 TBM Technology

“U-shape”: First Shield Machine for horseshoe-shaped Cross Sections

On 17 July 2016 the workshop acceptance was completed by the project owner for the world’s first U-shape (horseshoe shape) TBM, which is manufactured by CREG (China Railway Engineering Equipment...

more
Issue 01/2021 Compendium

Tunnelling Pocketbook 2021

For many years, the Taschenbuch für den Tunnelbau (Tunnelling Pocket Book) has been a practical guide for clients, planners and contractors, as it deals with current developments and innovative...

more
Issue 04/2020

Tunnels to Bad Cannstatt – Undercrossing a Long-Distance Heat Pipeline at Difficult Conditions

1 Project and Problem In connection with the large-scale railway project Stuttgart 21, the two tubes of the long-distance railway tunnel leading from the main station to Bad Cannstatt were built....

more