|If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.|
||Thread Tools||Display Modes|
No copper infrastructure in UK so why is BT (British Telecum) Openroach in
R. Mark Clayton wrote:
As I understand it the issue is spoil removal. In small holes, you
simply compact the spoil into the side of the tunnel. As long as it's
not rock the subsoil is soft enough to allow that.
For bigger tunnels that is not a viable option and you have to get the
waste material out. For big tunnels ( 1M?) there is enough room for a
proper tunnelling machine with a conveyor to carry away the spoil.
The intermediate sizes where there is insufficient room for a adequate
conveyor system is the issue.
An idea that comes immediately to mind for holes around 25cm diameter is
to crush the spoil to granules and flush it through the hole it is
drilling using water.
That idea took less time to think of than to write.
There must be any number of other extraction & disposal mechanisms that
could be developed by a small team of people with experience in the
Like an air knife or similar https://www.airspade.com/
Already used in suitable locations.
Nice - doesn't damage big roots of trees.
Also there are ferris wheel type cutters that are hauled on the back of
tractors that simply cut a trench.
They use truck size vacuum cleaners with giant tubes
that take all the rubble leaving zero mess.
|Thread||Thread Starter||Forum||Replies||Last Post|
|BT No Fibre Availability To The Premises 2020||7[_3_]||UK broadband||11||December 7th 17 12:14 PM|
|How farmer's wifey 1Gbit fibre optic network beats up BT, VM, offconn, Openroach university PhDs||7[_3_]||UK broadband||6||July 5th 17 05:28 PM|
|Two Fibre nodes yards of each other||7[_3_]||UK broadband||7||June 28th 17 10:54 AM|
|Kooch brothers turn into anti-fibre internet screaming gurlies||7[_3_]||UK broadband||8||June 21st 17 09:11 PM|
|BT renames FTTP to CTTP in major marketing push||7[_3_]||UK broadband||2||June 17th 17 10:21 PM|