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Tunneling / TBM
Tunneling and microtunneling (TBM) methods install larger diameter pipelines and casings with machine-mined faces and pipe jacking or segment lining. These tools serve municipal trunk lines, outfalls, and engineered crossings where auger or HDD limits are reached.
What Is Tunneling / TBM?
Tunneling and microtunneling (TBM) methods install larger diameter pipelines and casings with machine-mined faces and pipe jacking or segment lining. These tools serve municipal trunk lines, outfalls, and engineered crossings where auger or HDD limits are reached.
How It Works
A microtunnel boring machine mines soil at the face while jacking pipe segments behind it. Laser or guidance systems hold line and grade. Slurry or spoil handling is planned for groundwater and soil type.
Who Needs Tunneling / TBM?
- Municipal trunk sewers and water mains in urban ROW
- Large outfall crossings under rivers and channels
- Engineered projects with strict settlement limits
Materials & Pipe Sizes
RCP, steel casing, and jacked concrete or steel pipe — diameters commonly 24 inches through 120+ inches on major work.
Project Scale
Mid to large municipal and infrastructure programs — not typical for residential laterals.
Benefits vs Open-Cut Trenching
Deep urban trunk lines would require massive open cuts and utility conflicts. Microtunneling keeps surface disruption localized to shafts.
- Large diameter in one operation
- Grade control for gravity sewer
- Reduced settlement risk vs open trench in urban fill
- Shaft footprint smaller than full trench width
When You Need This Service
- Engineer specifies microtunnel or TBM
- Gravity sewer needs tight elevation control
- Open-cut trunk line is socially or economically blocked
- Groundwater table requires sealed face mining
Texas 811 & Permits
Shaft excavations and tunnel alignments demand exhaustive locate and monitoring programs. Permits and traffic plans are project drivers in Texas metros.
Cost Factors (No Flat Rate)
Diameter, length, groundwater, shaft depth, disposal, guidance system, and agency inspection requirements.
Get a Free Estimate →Why homeowners & contractors call us
Texas HDD done right
Less mess, less downtime, clear answers before we mobilize.
Free bore estimates
Tell us the path, pipe, and city — we explain cost drivers upfront. No flat-rate gimmicks.
811 first, always
Texas utility locates and potholing before steel enters the ground — protects you and your neighbors.
Minimal restoration
Small entry pits instead of trenches through driveways, landscaping, and retail parking.
FAQ
Tunneling / TBM FAQ
Is microtunneling the same as HDD?
No. Microtunneling mines at the face and jacks pipe; HDD is a surface drill string. Choice is spec- and diameter-driven.
Do you handle Texas municipal inspections?
We coordinate with your engineer and inspector for shaft, mining, and reception requirements — scope defined in contract documents.
When is TBM overkill?
Small residential or short commercial bores rarely justify TBM spreads. We steer those to HDD or auger bore.
What is horizontal directional drilling (HDD)?
HDD is a steerable trenchless method that drills a pilot hole underground, then reams and pulls pipe or conduit through the bore path. It avoids open trenches across roads, rivers, driveways, and finished landscaping.
How much does directional boring cost in Texas?
Cost depends on bore length, pipe diameter, soil and rock, access, traffic control, permits, and utility congestion — not a flat per-foot rate. We provide free estimates after scope review; no fabricated prices on our site.
Free Tunneling / TBM Quote
24/7 — Emergency dispatch statewide — (512) 838-3643
Free bore estimate
Tell us about your project
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