Pipe Jacking Works Using Various Methods
Sri Tanjong Bina Sdn. Bhd. provides trenchless pipe installation services using various pipe jacking methods to suit different soil conditions, alignment requirements, and project environments.
In addition to conventional pipe laying works for MS and HDPE pipes, alternative trenchless solutions are offered to minimise surface disruption and improve construction efficiency.
Our Works
Pipe jacking is a trenchless construction method where pipes are installed underground by hydraulic jacking, without the need for continuous open excavation.
Sri Tanjong Bina offers pipe jacking solutions using the following methods:
- Manshield Method
- Slurry System Method
- Pilot Tube Micro-Tunneling Method
- Horizontal Directional Drilling (HDD) Method
The selection of methods depends on ground conditions, pipe diameter, alignment accuracy, and site constraints.
Pipe Jacking Using Manshield Method
The Manshield Method is used when ground conditions involve high uncertainty or variable soil profiles.
Pipes are jacked into the ground using hydraulic jacks from a jacking shaft while excavation at the tunnel face is carried out manually or mechanically within a shield.
Excavated soil is collected and lifted out of the shaft using cranes or lifting systems.
Typical Use Cases
- Uncertain or mixed ground conditions
- Larger pipe diameters
- Situations requiring direct control at the excavation face
Pipe Jacking Using Slurry System Method
The Slurry System Method does not require manual entry into the excavation face. Excavation is carried out mechanically using laser-guided machinery controlled remotely from outside the jacking pit.
Soil is removed through a slurry circulation system, allowing controlled excavation with high accuracy.
Key Characteristics
- Remote-controlled excavation
- Laser-guided alignment system
- Soil removal through slurry circulation
- Suitable for long-distance drives
- Effective in various soil conditions
This method is suitable for projects requiring precision and stable excavation control.
Pipe Jacking Using Pilot Tube Micro-Tunneling Method
The Pilot Tube Micro-Tunneling Method, also known as the auger drilling method, is used for small-diameter pipelines that require high accuracy in gradient and alignment.
A pilot tube is first installed to establish the precise alignment before enlarging the bore and installing the final pipe.
Key Features
- High torque capability
- Capable of drives exceeding 80 meters
- High alignment and gradient accuracy
- Small working area requirement
- Can be used below the water table
Installation Phases
Phase 1
Installation of pilot tube to fix alignment and gradient
Phase 2
Installation of augers and temporary casing to remove soil
Phase 3
Installation of the proposed pipe
Pipe Jacking Using Horizontal Directional Drilling (HDD) Method
Horizontal Directional Drilling (HDD) is a trenchless method used for fast installation of pipelines with minimal surface disturbance.
A directional drill bit equipped with an electronic transmitter is guided along a designed alignment. After the pilot hole is completed, reaming is carried out to enlarge the hole before pulling back the pipeline.
Applications
- Uncertain or mixed ground conditions
- Larger pipe diameters
- Situations requiring direct control at the excavation face
This method is suitable for projects requiring minimal excavation and surface reinstatement.
Method Selection & Engineering Consideration
The selection of pipe jacking method is based on engineering assessment and site conditions determine the most suitable method for each project
Ground and Soil Conditions
Critical for choosing between methods like Manshield for uncertain profiles or Slurry systems for stability below the water table.
Pipe Size and Material
Different techniques suit specific diameters, such as Pilot Tube Micro-Tunneling for small-diameter pipes or Manshield for larger ones.
Length of Drive
Determines the feasibility of methods, with Pilot Tube Micro-Tunneling capable of exceeding 80 meters and Slurry systems ideal for long distances.
Site Access and Working Space
Restricted areas favor HDD or Pilot Tube methods, which require minimal surface disruption and smaller launching pits.
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Project References
Frequently Asked Questions
Pipe jacking is a trenchless method of installing pipelines underground by pushing pipes through the soil using hydraulic jacks from a launching pit.
Sri Tanjong Bina provides pipe jacking using Manshield, Slurry System, Pilot Tube Micro-Tunneling, and Horizontal Directional Drilling methods.
Method selection is based on ground conditions, pipe diameter, alignment accuracy, drive length, and site constraints.
Yes. Pipe jacking methods such as HDD, Slurry System, and Micro-Tunneling are suitable for road and river crossings.
Yes. Pipe jacking can be used for deep underground installations with proper pit construction and support systems.
Some methods require minimal working space, such as Pilot Tube Micro-Tunneling and HDD, making them suitable for confined sites.
Safety is maintained through proper pit support, controlled excavation, continuous monitoring, and experienced supervision.
