CULVERTS – OPEN FACE PIPEJACKING METHOD.
3 Modes of Open Face Shield Pipejacking
In-Situ Replacement of Corrugated Steel Pipe (CSP) Culverts
Deteriorated corrugated steel pipe culverts can be replaced in-situ – without disturbing traffic and with no risk to the embankment. The waterway area of the culvert is preserved or increased. We have steerable shields to suit RCJPs from diameters Ø1200 ID up to 3.0m.
Steerable Shield puring pipejacking
The Steerable Shield / RCJP fully encapsulates the CSP, which is progressively removed as jacking proceeds.The overcut around the RCJP is limited to 10-15mm and is fully grouted after jacking
New Installation of RCJP’s
RCJP’s can be installed in a variety of grounds with no disruption to traffic and no risk to the embankment or surface.
Diameters:
- Soil, Fill, Soft Rock: Ø1200 − Ø3m
- Rock up to 20mPa: Ø1500 − Ø3m
Cross section at completion
A RCJP is jacked into position as material is excavated by a mechanical excavator at the face. The overcut of 10-15mm around the RCJP is grouted after jacking.
Sliplining RCJP into Existing Culverts
In practice, most pipes can be sliplined into a host pipe. Shown in the image are large diameter RCJP being sliplined into a deteriorated host pipe. The waterway area of a new sliplined pipe is always less than the original pipe. Often on projects, a new installation or CSP renewal is used to augment a sliplined pipe to maintain waterway area.
A detailed survey of the deteriorated host pipe is required to determine the maximum pipe diameter which can be sliplined. Slide rails, accurately placed, ensure precise carrier pipe positioning. Grouting between the carrier pipe and host pipe is completed after sliplining.
Laser-Guided Accuracy
Guide by lasers, Pezzimenti Tunnelbore delivers culvert installations with exceptional accuracy. Our highly skilled operators bring over 30 years of experience in delivering efficient and precise projects with no disruption to traffic or rail movements.
Highly Successful
Pezzimenti Tunnelbore are market leaders in CSP renewals and large-diameter culvert installations, with capabilities up to 3 metres. Over the past 30 years, our operators have successfully completed hundreds of projects
Globally Accepted
Pezzimenti Tunnelbore lead the way in Australia with Open Shield Pipejacking – a globally recognised, industry-approved tunnelling technology. Trusted by professionals worldwide, this proven approach combines precision, safety, and efficiency
EQUIPMENT
A Full Suite of Open Face, Laser-Guided, Steerable Shields
Pezzimenti Tunnelbore operates a comprehensive suite of Open Face Shields, ranging from 1200mm to 3000mm in diameter. This versatility allows us to tackle a wide variety of culvert installations and replacements, matching the right shield to the specific requirements of each project
CONSULTATION
Need technical help in the design phase? Talk to us.
With decades of experience in culvert installation and replacement, we can provide expert guidance to help you avoid costly design changes later. Whether it’s large-diameter installations or CSP renewals, our input ensures your plans are practical, cost-effective, and construction-ready.
BOOK A PRESENTATION
Organise a Presentation for your Designers or Project Managers.
Pezzimenti Tunnelbore offers tailored presentations on the Open Face Shield Pipejacking method, covering capabilities, applications, and case studies. Designed to match your company’s needs, these sessions provide relevant, practical insights to help your team make informed project decisions.
