very interesting video, I particularly liked seeing how they designed and made the machine for cutting the old steel pipes out; simple, a little crude but yes effective.
What counters the torque of the drill head? If the pipe is loose enough to be rammed into the hole, it doesn't seem like it could counter the torque of the drill head.
Does the drill head bore a larger diameter hole than the pipe to reduce the friction on the pipe as it is jacked in?
If the drill bore is larger than the pipe, do you pump grout into the space outside of the pipe after the pipe is all installed?
very interesting video, I particularly liked seeing how they designed and made the machine for cutting the old steel pipes out; simple, a little crude but yes effective.
Samqdf 1 month ago
These are all good questions but as I am the video producer, not a Tunnel Boring expert, they are beyond my technical expertise to answer.
Can I suggest you visit Tunnel Boring Australia's website at where you'll find more information and links to email the company.
newhopemedia 1 year ago
I have a couple questions about this process.
What counters the torque of the drill head? If the pipe is loose enough to be rammed into the hole, it doesn't seem like it could counter the torque of the drill head.
Does the drill head bore a larger diameter hole than the pipe to reduce the friction on the pipe as it is jacked in?
If the drill bore is larger than the pipe, do you pump grout into the space outside of the pipe after the pipe is all installed?
deezynar 1 year ago