HDD operations require precise coordination of drilling operations, fluid management, and pipe installation. Production rates vary based on ground conditions, pipe diameter, and drilling length. Modern guidance systems and drilling technologies have improved installation accuracy and efficiency.
Key Statistics:
- Average production: 150-200m/day
- Typical depths: 5-25m
- Diameters: 100-1200mm
- Best practice: 250m/day
- Pullback force: 10-100t
- Drilling fluid: 200-1000L/min
- Accuracy: ±50mm
- Design life: 50+ years
INTERNATIONAL EXAMPLES
| Country | Location | Length (m) | Diameter (mm) | Rate (m/day) | Ground Type | Contractor | Cost ($K/m) | Source |
|---|---|---|---|---|---|---|---|---|
| Australia | Sydney | 450 | 900 | 150-180 | Sandstone | UEA | 3.2 | Sydney Water |
| UK | London | 380 | 600 | 180-200 | London Clay | Murphy | 2.8 | Thames Water |
| Germany | Hamburg | 520 | 800 | 160-190 | Mixed | Herrenknecht | 3.5 | DB |
| USA | Houston | 680 | 1000 | 140-170 | Clay/Sand | Laney | 3.8 | City Houston |
| Singapore | Jurong | 420 | 750 | 170-200 | Marine Clay | McConnell Dowell | 3.0 | PUB |
Installation Phase Analysis:
PILOT BORE:
- Production Rates:
- Soft ground: 200-250m/day
- Mixed ground: 150-180m/day
- Rock: 80-100m/day
- Setup time: 4-6 hours
- Requirements:
- Tracking system
- Fluid management
- Survey control
- Ground monitoring
REAMING OPERATIONS:
- Production Rates:
- First pass: 150-180m/day
- Final pass: 100-120m/day
- Multiple passes needed >600mm
- Back reaming: 80-100m/day
Note 1: Production rates are indicative only.
Note 2: Rates vary based on:
- Ground conditions
- Pipe diameter
- Length of drill
- Access conditions
- Fluid management
- Equipment capacity
Note 3: Installation calculation formula:
P = (BL × DF × GF × AF) – DC, where:
- BL = Base length
- DF = Diameter factor (0.7-1.2)
- GF = Ground factor (0.6-1.0)
- AF = Access factor (0.8-1.1)
- DC = Delay constant
Key Considerations:
- Fluid management
- Ground stability
- Surface monitoring
- Environmental controls
- Utility detection
- Quality assurance
- Emergency response
- Documentation requirements
Other production rates – Indicative only
- RAIL INDUSTRY PRODUCTION RATES COMPREHENSIVE TABLE
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Our Partners
- FR2 Infrastructure – Constructability advise and project and planning controls
- Staging Diagrams – Staging diagrams for possession planning
Possession Planning – Current Possession Calendars
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