Definition - What does Pipe Ramming mean?
Ramming is a method of tunneling by driving a casing or pipe through the ground using a percussive hammer. The hammer is attached to an open-ended casing, using an adapter. The casing is then driven through the ground by the hammer. The spoil within the casing is removed when the casing is fully driven into place.
This trenchless technique causes little to no ground slump, which makes it ideal for installations under roads or railways.
Trenchlesspedia explains Pipe Ramming
Pipe ramming can be used in a wide variety of soil conditions. Once the pipe casing has been hammered into position, the soil is removed from the casing using compressed air.
Pipe ramming can be used in horizontal, angled or even vertical applications. Sometimes, contractors use pipe ramming in conjunction with other trenchless methods. For example, when a pipe becomes stuck in an horizontal directional drilling (HDD) operation, pipe ramming can be used to dislodge the pipe for the HDD process to continue.
Pipe ramming lacks the precision of sonde-guided drilling or even microtunneling. It's faster than pipe jacking and neither faster nor slower than auger boring or horizontal directional drilling. It is recommended that steel casing pipe is used when pipe ramming is the horizontal boring method chosen.