Pipe jacking equipment enables trenchless underground pipe installation beneath roads, railways, and urban infrastructure – this guide covers methods, grout systems, market data, and how to choose the right setup for your project.
Table of Contents
- What Is Pipe Jacking Equipment?
- How Pipe Jacking Systems Work
- The Critical Role of Annulus Grouting
- Selecting the Right Pipe Jacking Equipment
- Frequently Asked Questions
- Comparison: Pipe Jacking vs. Alternative Trenchless Methods
- AMIX Systems: Grout Mixing for Pipe Jacking Projects
- Practical Tips for Pipe Jacking Projects
- The Bottom Line
- Sources & Citations
Article Snapshot
Pipe jacking equipment is a category of trenchless construction machinery that pushes reinforced pipe sections through the ground using hydraulic jacks, a steerable boring head, and a lubricated annular space. It installs underground utilities with minimal surface disruption, making it the preferred method for crossings under roads, railways, and urban corridors.
Market Snapshot
- The global pipe jacking machine market was valued at approximately USD 9.686 billion in 2024 (Market Research Future, 2024).[1]
- TechSci Research projects a CAGR of 5.76% for the global market from 2025 to 2030 (TechSci Research, 2024).[2]
- North America is projected to secure over 32.6% revenue share by 2035 (Research Nester, 2025).[3]
- US urban pipelines reached 3.61 million kilometers by 2018, driving sustained demand for infrastructure upgrades (Research and Markets, 2025).[4]
What Is Pipe Jacking Equipment?
Pipe jacking equipment is a system of hydraulic jacks, a steerable cutting head, and a lubrication delivery network that collectively push reinforced concrete or steel pipe sections through undisturbed soil or rock. The method, also known as microtunneling when combined with a remote-controlled boring machine, allows contractors to install utility conduits – water mains, sewer lines, gas pipes, and cable casings – without excavating a continuous open trench. A launch shaft is constructed at the start of each drive, and a receiving shaft marks the endpoint. Jacking forces generated by hydraulic rams push each successive pipe segment forward as the cutting head advances, displacing or removing spoil through the bore.
AMIX Systems supplies specialized grout mixing and pumping equipment that supports pipe jacking operations through annulus grouting and lubrication systems, helping contractors control jacking forces and stabilize the bored annular space. Understanding the full scope of pipe jacking equipment – from the boring machine to the ancillary grouting plant – is important for project teams planning trenchless crossings in urban or environmentally sensitive corridors.
The term trenchless pipe installation encompasses several methods, but pipe jacking is distinguished by its use of the finished pipe as the structural liner during the drive itself. Each pipe segment bears the accumulated jacking load as the string extends. This contrasts with horizontal directional drilling, where a bore is completed first and pipe pulled back through it afterward. Microtunneling, auger boring, pipe ramming, and guided boring machine methods all represent close variations on the pipe jacking principle, differing primarily in diameter range, steering precision, and spoil removal technique.
Applications span water supply, sewer rehabilitation, oil and gas crossings, traffic tunnel utility conduits, and urban transit corridor support. In Canada and the United States, the aging underground utility network is a primary market driver. “In developed nations like the United States, with urban pipelines reaching 3.61 million kilometers by 2018, demand shifts toward upgrading aging infrastructure,” noted the Research and Markets Team (Research and Markets, 2025).[4]
How Pipe Jacking Systems Work
A complete pipe jacking system integrates several interdependent components, each of which must perform reliably for the drive to succeed on schedule and within allowable deviation tolerances. The primary components are the microtunnel boring machine (MTBM) or pilot tube head, the hydraulic jacking frame in the launch shaft, intermediate jacking stations, and the spoil removal system.
The Hydraulic Jacking Frame
The jacking frame anchors to the base of the launch shaft and distributes thrust loads across the pipe circumference through a thrust ring. Main jacks generate between 200 and 5,000 tonnes of force depending on drive length and soil conditions. The frame must be precisely aligned before the first pipe is inserted, as initial alignment determines the tolerance of the entire drive. Misalignment at this stage compounds over distance, making precision mounting and survey control important from the outset.
Intermediate Jacking Stations
For long drives – those exceeding 100 to 150 metres – friction between the pipe string and surrounding ground would otherwise exceed the capacity of the main jacks alone. Intermediate jacking stations (IJS) are short cylinders installed between pipe segments at calculated intervals. They activate sequentially to break the drive into manageable sections. Lubrication grouting between the pipe exterior and the overcut annulus reduces skin friction substantially, and the effectiveness of that grouting system directly determines how many intermediate stations are needed and how far a drive can extend.
Spoil Removal and Slurry Systems
Spoil removal method varies by machine type. Slurry microtunneling machines use pressurized bentonite slurry to support the face and transport cuttings back to a separation plant on the surface. Auger boring machines use a continuous helical flight to move dry or moist spoil rearward through the casing. In both cases, the volume of spoil removed must closely match the theoretical volume of the bore to control ground loss and surface settlement – a factor of particular importance in densely built urban areas.
“The North America pipe jacking machine market is primarily driven by the region’s increasing emphasis on modernizing and expanding underground infrastructure, including water supply networks, sewage systems, and utility tunnels,” according to TechSci Research Analysts (TechSci Research, 2024).[2]
The Critical Role of Annulus Grouting in Pipe Jacking
Annulus grouting is one of the most technically demanding elements of pipe jacking, directly affecting drive efficiency, ground control, and long-term structural performance. The annular space between the outside of the pipe and the excavated bore – 30 to 75 millimetres wide – must be managed throughout the drive and sealed permanently on completion.
Lubrication Grouting During the Drive
Lubrication grout, most a bentonite slurry or bentonite-cement blend, is injected through ports in the pipe wall to fill and maintain the annular space. This reduces skin friction on the advancing pipe string, which directly lowers jacking forces. Lower jacking forces allow longer drives without additional intermediate stations, reduce structural stress on the pipe segments, and protect the launch shaft anchor system. The grout must be formulated to remain fluid during the drive while providing adequate support to prevent bore collapse in unstable ground conditions.
Grout mixing equipment for lubrication applications must deliver consistent, homogeneous mixes at controlled flow rates. Colloidal grout mixers – which use high-shear mixing action to disperse bentonite or cement particles fully – produce more stable, lower-bleed mixes than conventional paddle mixers. This consistency matters because uneven lubrication creates friction differentials along the pipe string, increasing the risk of deviation from the design alignment. You can explore Colloidal Grout Mixers – Superior performance results designed for these demanding annulus grouting conditions.
Completion Grouting After the Drive
Once the pipe is in its final position, the annular space is permanently grouted with a cement-bentonite or cement-based mix to prevent ground subsidence and water infiltration over the structure’s service life. Completion grouting requires sufficient flowability to fill voids across long drives while developing adequate strength to carry overburden loads. Grout mix design, injection pressure, and sequencing all influence fill completeness. Inadequate completion grouting is a known cause of long-term ground settlement above jacked utilities in urban environments.
The Typhoon Series – The Perfect Storm grout plants are well suited to annulus grouting applications, offering containerized or skid-mounted configurations that fit within the confined working areas typical of pipe jacking launch sites. Their self-cleaning mixer systems reduce downtime during extended drives where continuous lubrication injection is required.
Selecting the Right Pipe Jacking Equipment for Your Project
Selecting pipe jacking equipment for a specific project requires matching machine type, diameter range, jacking capacity, and ancillary systems to the ground conditions, drive length, pipe specification, and surface constraints of the crossing. No single machine configuration suits every application, and poor equipment selection is one of the most common causes of project overruns in trenchless construction.
Ground Conditions and Machine Type
Soil type governs machine selection more than any other single variable. In soft cohesive soils – clays, silts, and soft alluvial deposits common in Gulf Coast regions of Louisiana and Texas – slurry MTBM systems with face support are required to control ground loss and manage groundwater. In competent sands and gravels, open-face auger boring is adequate for smaller diameters. In mixed-face conditions or rock, a hard-rock or mixed-ground MTBM with disc cutters and a slurry circuit is the correct choice. Attempting to use open-face equipment in unstable ground is one of the most predictable ways to encounter face collapse and project delays.
Drive Length and Jacking Force Requirements
Drive length directly determines jacking force through accumulated skin friction. Contractors should calculate theoretical jacking forces using established formulas – factoring in pipe weight, overburden, soil type, and lubrication efficiency – before selecting the main jacking frame capacity and intermediate station count. As a general reference, drives beyond 150 metres in typical soils require at least one intermediate jacking station, and drives beyond 300 metres need multiple. The grout lubrication system must be sized and operated to achieve the skin friction coefficients assumed in the design calculations.
Ancillary Equipment: Grout Mixing and Pumping
Grout mixing and pumping equipment is frequently underspecified relative to the boring machine itself. Lubrication grout must be available continuously during the drive – a delay in grout supply allows the annular space to collapse against the pipe, rapidly increasing friction. Peristaltic pumps are well suited to grout injection in pipe jacking because they handle high-viscosity bentonite slurries, provide accurate metering, and are reversible for flushing lines. You can review Peristaltic Pumps – Handles aggressive, high viscosity, and high density products to assess capacity options for your drive requirements. Ensuring the mixing plant output matches the combined demand of all active injection points – including intermediate station locations – is important to maintaining the lubrication envelope during continuous jacking.
“The pipe jacking machine market is expected to observe development during the forecast period i.e., 2021 to 2031 with a CAGR of 11%. The water supply industry, oil and gas industry and traffic burrows are projected to give various opportunities to manufacturers across the globe,” stated Fact.MR Analysts (Fact.MR, 2021).[5]
Your Most Common Questions
What diameter range does pipe jacking equipment cover, and how does diameter affect equipment selection?
Pipe jacking covers a broad diameter range, from approximately 150 millimetres for small-diameter microtunneling up to 3,000 millimetres or larger for man-entry tunnel drives. The diameter affects nearly every aspect of equipment selection. Smaller diameters use auger boring or slurry microtunneling with fully remote-controlled guidance systems. Larger diameters permit man-entry inspection, allow more complex face support systems, and require substantially higher jacking forces due to increased pipe weight and soil contact area. Annulus grouting requirements also scale with diameter – larger bores have greater annular volumes to fill and maintain during the drive. The shaft size required to launch and receive the machine grows with pipe diameter, influencing project cost and site footprint. For projects in urban areas of British Columbia, Ontario, or the northeastern United States, shaft size is as constraining as the bore diameter itself when working within existing infrastructure corridors.
How does grout lubrication reduce jacking forces in pipe jacking operations?
Grout lubrication works by maintaining a continuous fluid film between the outer surface of the pipe and the surrounding ground. The cutting head excavates a bore slightly larger than the outside diameter of the pipe – the overcut – creating an annular space. Bentonite slurry or a bentonite-cement blend is injected into this space through ports in the pipe wall, filling the gap and preventing the ground from consolidating against the pipe surface. The lubrication grout acts as a boundary layer, converting solid-to-solid friction – which is high – into fluid shear, which is much lower. Published data shows effective lubrication reduces skin friction coefficients from values above 0.30 in unlubricated conditions to below 0.05 with well-managed bentonite injection. The quality and consistency of the grout mix is important: segregated or lumpy mixes create uneven film coverage and friction hot spots that stall drives. High-shear colloidal mixers produce homogeneous, low-bleed mixes that maintain the lubrication envelope more reliably than paddle-mixed alternatives.
What are intermediate jacking stations and when are they required?
Intermediate jacking stations (IJS) are hydraulic jack assemblies installed within the pipe string between standard pipe segments at pre-planned locations along the drive. When the total friction load on the pipe string exceeds the safe capacity of the main jacking frame, the intermediate stations activate to divide the drive into shorter, independently jacked sections. This allows the main frame to push only the forward portion of the string while the rearward portion remains stationary. Stations are planned during drive design based on calculated friction loads, drive length, and soil type. In practice, actual jacking pressures are monitored continuously, and the decision to activate intermediate stations occurs earlier than planned if ground conditions differ from design assumptions. Removal of intermediate stations after drive completion requires careful grouting to fill the gap left by the station housing. Projects in sandy, water-bearing ground – such as those in Queensland, Australia and the Gulf Coast – need intermediate stations at intervals as short as 80 to 100 metres because lubrication efficiency is harder to maintain in permeable soils.
What types of grout are used in pipe jacking and how are they mixed?
Two distinct grout types serve different purposes in pipe jacking operations. Lubrication grout – used during the active drive – is predominantly a bentonite slurry, sometimes with small additions of polymer or cement to improve stability in water-bearing ground. The mix must be fluid enough to flow freely through injection ports and fill the annular space without settling, but viscous enough to remain in place between injection cycles. Completion grout – injected after the drive to permanently seal the annular space – is a cement-bentonite blend or a neat cement grout with a water-to-cement ratio selected for flowability and target compressive strength. Both grout types benefit from colloidal high-shear mixing, which fully disperses the fine bentonite or cement particles to produce stable, homogeneous mixes. Batch mixing systems with automated water and binder metering ensure consistent mix proportions across the full duration of a drive. Peristaltic pumps are the preferred pump type for grout injection because they handle the abrasive, high-viscosity mixes without damaging valves or seals, and they meter accurately at the low flow rates typical of annulus grouting applications.
Pipe Jacking vs. Alternative Trenchless Methods
Choosing between pipe jacking and other trenchless installation methods depends on diameter requirements, ground conditions, alignment precision, and whether the installed pipe must serve as the finished structural conduit. The table below compares the most common alternatives across the factors that matter most to project teams.
| Method | Typical Diameter Range | Steering Precision | Best Ground Conditions | Annulus Grouting Required | Typical Drive Length |
|---|---|---|---|---|---|
| Pipe Jacking / Microtunneling | 150mm – 3,000mm+ | High (±25mm) | Soft to mixed ground, rock with correct head | Yes – lubrication and completion | Up to 500m+ per drive |
| Horizontal Directional Drilling (HDD) | 50mm – 1,500mm | Moderate | Soft to medium soils, avoids rock | Partial – annular grout optional | 100m – 2,000m+ |
| Auger Boring | 150mm – 1,500mm | Low-Moderate | Cohesive soils, dry conditions | Rarely | Up to ~150m |
| Pipe Ramming | 100mm – 1,800mm | Very Low | Loose to medium soils | No | Up to ~80m |
Pipe jacking delivers the highest alignment precision of any trenchless method, making it the correct choice where grade is important – sewer gravity mains, for example – or where surface settlement above the bore must be minimized.[2] HDD suits longer, shallower crossings where strict grade control is less important. Auger boring is cost-effective for short road crossings in stable ground but provides limited steering capability. Pipe ramming is the fastest option for simple casings in loose material but cannot be steered at all once started.
AMIX Systems: Grout Mixing Solutions for Pipe Jacking Projects
AMIX Systems designs and manufactures automated grout mixing plants and pumping equipment specifically engineered for the demanding requirements of trenchless construction, including pipe jacking annulus grouting. Our equipment has supported microtunneling and pipe jacking projects across North America, the Middle East, and Australia, providing the consistent, high-quality grout supply that these operations depend on.
Our Colloidal Grout Mixers – Superior performance results use high-shear mixing technology to produce stable, low-bleed bentonite and cement-bentonite slurries for both lubrication and completion grouting. The colloidal mixing action fully disperses fine particles, producing mixes that maintain their consistency from the mixer to the injection point – a important factor on longer drives where grout quality must remain constant over many hours of continuous operation.
For project teams that need a flexible, proven solution without a capital purchase commitment, our Typhoon AGP Rental – Advanced grout-mixing and pumping systems for cement grouting, jet grouting, soil mixing, and micro-tunnelling applications. Containerized or skid-mounted with automated self-cleaning capabilities. option provides a containerized grout plant deployable to site quickly. The self-cleaning mixer system reduces maintenance time during extended continuous drives.
“We’ve used various grout mixing equipment over the years, but AMIX’s colloidal mixers consistently produce the best quality grout for our tunneling operations. The precision and reliability of their equipment have become important to our success on infrastructure projects where quality standards are exceptionally strict.” – Operations Director, North American Tunneling Contractor
To discuss grout mixing plant configurations for your pipe jacking project, contact our team at https://amixsystems.com/contact/, call +1 (604) 746-0555, or email sales@amixsystems.com. Follow our project updates on LinkedIn for technical articles and equipment news.
Practical Tips for Pipe Jacking Projects
The following practices reduce risk, control costs, and improve drive success rates across a range of ground conditions and project types.
Conduct thorough ground investigation before equipment selection. Soil borings at the launch shaft, receiving shaft, and at intervals along the drive alignment are the minimum requirement. For drives in mixed-face conditions or areas with variable groundwater, additional investigation – including piezometers and laboratory testing – provides data that prevents machine selection errors and unexpected face instability mid-drive.
Size the grout plant to the actual injection demand, not the minimum. Calculate the volume of the annular space per metre of drive, multiply by expected advance rate, and add a contingency margin of at least 25% to account for ground losses and grout takes above theoretical. A grout plant that cannot keep up with injection demand during peak jacking creates friction build-up that intermediate stations alone cannot compensate for. Automated batching with consistent water-to-binder ratios eliminates the human error variability that affects mix quality during long shifts.
Monitor jacking pressures continuously and log against advance rate. A rising jacking force that outpaces the expected friction increase for the distance driven is an early warning of lubrication failure, alignment deviation generating additional contact loads, or face instability. Catching these signals early – before intermediate stations are saturated or pipe stress reaches design limits – allows corrective action while options remain available.
Plan shaft locations to balance drive lengths and minimize intermediate stations. Where project alignment permits, positioning launch and receiving shafts to keep individual drives below 200 metres reduces reliance on intermediate jacking stations and simplifies the lubrication management task. On linear utility projects, shaft spacing is sometimes dictated by access or surface constraints, but even partial optimization of shaft positions reduces total intermediate station count and associated grouting complexity.
Specify peristaltic pumps for grout injection where bentonite or thick slurries are involved. These pumps handle high-viscosity, abrasive mixes without seal or valve damage, meter accurately at low flow rates, and can be reversed to clear blocked injection lines – a practical advantage that conventional centrifugal pumps cannot offer in annulus grouting service. Explore the Complete Mill Pumps – Industrial grout pumps range to find the right configuration for your pipe jacking equipment setup.
The Bottom Line
Pipe jacking equipment represents a proven, precise approach to installing underground utilities without disrupting surface infrastructure. From the hydraulic jacking frame and microtunnel boring machine to the grout mixing plant and peristaltic injection pumps, every component of the system influences drive success. Annulus grouting – both lubrication during the drive and completion grouting afterward – is a technical discipline in its own right, and the quality of the grout mixing equipment directly determines how well friction is controlled and how reliably the bored space is sealed.
Market data confirms that demand for pipe jacking equipment is growing as urban infrastructure renewal accelerates across North America, Australia, and international markets. Projects that invest in correctly specified equipment, thorough ground investigation, and well-managed grouting operations consistently outperform those that treat ancillary systems as an afterthought.
AMIX Systems provides grout mixing and pumping equipment built for the continuous, demanding service that pipe jacking projects require. Contact our team to discuss your project requirements and identify the right grout plant configuration for your next trenchless drive.
Sources & Citations
- Market Research Future. (2024). Pipe Jacking Machine Market Research Report. https://www.marketresearchfuture.com/
- TechSci Research. (2024). North America Pipe Jacking Machine Market. https://www.techsciresearch.com/
- Research Nester. (2025). Pipe Jacking Machine Market Size & Share Analysis. https://www.researchnester.com/
- Research and Markets. (2025). Global Pipe Jacking Market Report. https://www.researchandmarkets.com/
- Fact.MR. (2021). Pipe Jacking Machine Market Forecast 2021-2031. https://www.factmr.com/