Pipe Ramming & Auger Boring
Reliable, rapid casing installation for road, rail, and infrastructure crossings.
What They Are
Pipe Ramming and Auger Boring are two complementary trenchless methods for installing steel casings beneath roads, railways, and surface obstacles over short to medium distances. Both methods are faster to mobilise than HDD and are suited to programme-critical crossings where surface preservation is required.
Pipe Ramming uses a pneumatic hammer to drive an open-ended steel casing directly through the ground — no pre-drilling or drilling fluid required. Auger Boring advances a steel casing while a rotating helical auger inside it conveys spoil back to the launch pit, providing controlled installation with continuous spoil removal.
How Pipe Ramming Works — 3 Steps
Setup & Alignment
A pneumatic hammer is attached to the rear of an open-ended steel casing and positioned at the crossing point from a launch pit.
Trenchless
Ramming Step 1
Ramming & Advance
The hammer drives the casing through the ground. Soil enters the open leading end and is retained inside as the casing advances. No excavation or drilling fluid required.
Trenchless
Ramming Step 2
Spoil Removal & Completion
Once the casing reaches the far side, retained soil is removed by auger or compressed air.
Trenchless
Ramming Step 3
How Auger Boring Works — 2 Steps
Advance & Spoil Removal
A steel casing is jacked forward while a rotating helical auger inside it continuously conveys spoil back to the launch pit.
Trenchless
Boring Step 1
Grade & Alignment Control
The machine maintains precise grade and alignment throughout — critical for crossings beneath live roads and railways.
Trenchless
Boring Step 2
Applications
TESPL in Pipe Ramming & Auger Boring
TESPL has deployed pipe ramming and auger boring across road, rail, and pipeline crossings throughout India and internationally. Both methods are used where HDD is over-specified or where programme speed and rapid mobilisation are the primary constraints.
TESPL's most significant auger boring deployment was at the Silkyara tunnel collapse in Uttarakhand in 2023. When 41 workers were trapped underground following a tunnel cave-in, TESPL mobilised its 1200mm auger boring machine to drill the horizontal rescue shaft. The operation ran 24×7 for 17 days. All 41 workers were rescued safely on 28 November 2023.