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.

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 …

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 digging …

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.

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 …

Microtunneling is a trenchless method of sewer construction. It is effective in soft, unstable, and wet soils and can crush large boulders. The tunneling process is remotely controlled and can be used to install …

Microtunneling is defined as a small-scale tunneling method used for installing underground pipelines with minimal surface disruption, employing a fully automated mechanized tunneling shield to …

Aug 21, 2025 · When access is limited and tolerances are tight, microtunneling delivers trenchless installs with millimeter-grade control for gravity sewers, pressure mains, and utility crossings under …

The American Society of Civil Engineers (ASCE), the North American Society for Trenchless Technology (NASTT), and the North American Microtunneling Association (NAMA) acknowl-edge the …