Microtunneling or microtunnelling is a tunnel construction technique used to construct utility tunnels from approximately 0.35–4 m (1 ft 2 in – 13 ft 1 in) in diameter.

Oct 28, 2024 · The microtunneling method is an advanced trenchless construction technique used to install pipelines, conduits, and other underground utilities with minimal surface disruption.

Oct 19, 2021 · Microtunneling is a trenchless construction technique. It’s used for constructing small-diameter utility tunnels, which can be 20 to 160 inches in diameter. To construct these tunnels, you …

Dec 5, 2025 · What is Microtunneling? Microtunneling is a construction method that uses a small, remote-controlled Microtunnel Boring Machine (MTBM) to install pipes underground without …

ADS AND TOLERANCES 20 22 The pipe jacking technique Pipe jacking/microtunnelling* is a non-disruptive method of installing utility tunnels and conduits by thrusting pipes through the ground.

Microtunneling systems are remotely-controlled and comprise several pieces of machinery or subsystems that function together. They are managed by an operator who monitors and controls …

Nov 8, 2025 · Unlike traditional cut-and-cover excavation, which involves digging an open trench, microtunneling is a trenchless technique that operates entirely underground.

Microtunnelling is an efficient trenchless technique for the construction of small diameter tunnels. The method is especially useful for laying pipelines beneath highways, railroads, and other sensitive …

Sep 21, 2025 · You pick microtunneling when you must hold line and grade within millimeters, document face pressure, and maintain full ground support. With sealed slurry circuits and segmental …

Jul 7, 2023 · Microtunneling is used for small diameter tunneling projects, operated remotely by a crew stationed on the surface, and are a safer option for field personnel when compared to much …