Underground boreing

[ozwinner]

Ok guys,
Just how do they check, or even get their levels when underground boreing.
We are getting natural gas, Yeah,... ....and they have put in most of the pipes useing undergroung boreing.
I have noticed that everywhere they have done it, paint on the roads etc like, 1.5M, 1.2M, 1M.

Soooooo, how do they control the machine to get the pipes exactly where they want them? :confused:

Al

[echnidna]

They imported some welsh rabbits who have been trained by the coalminers.
They dig a pilot hole for the machine. The machine operators keep quiet about it in case someone fancies some of their welsh rarebit.

[beejay1]

Hi Al.
Maybe the attached will help. Dont understand it much myself but i think radiowaves and lazers paly a part. seem to recall when they were planning the Channel tunnel, satelite was used in the planning as well.

http://www.directionaldrilling.com/d...hp?report=8_02

beejay1

http://community.webshots.com/user/eunos9

[ozwinner]

Thanks BJ

But these rigs are nowhere near the computer age, stone age maybe.

Al

[MajorPanic]

Who cares, as long as you get it?

Ask someone who's boring, they will probably know :confused:

Augers well for a good outcome :eek:

[Zed]

when a telco want so check whos cable are underground (ok... well SOMEONES CABLES) they use a "thingy" .
You cant guess which one unless you dig it up and suss it out for markings (or put someone off the air!!!)

anyway they use a thing that for lack of a betterer term is like a depth sounder / radar thingy that can detect metal and stuff underground - its so accurate you can actually tell how deep something is down to about 10mm. I personally have plotted cables under roads and such and can follow the profile to such a degree to where you can detech "oh.. here we go, this is where we go under the other one, see its just given a signal that indicates a 90 degre cross... yep thats it allright, its 1.6m here and 1.8 here and 2.0 here, thus the gradient is 1:6. etc...."

in foren, um foreighn, err foreign countries they use hamsters, gerbils etc, in the really poor counties they use rats.

[beejay1]

gettin really bored with this thread nowbeejay1

http://community.webshots.com/user/eunos9

[bitingmidge]

You'll notice that none of the people operating the rig wear foilies.

:eek: :eek: :eek:

Be CAREFUL Al.

P

[Guy]

The first stem is to call 1100 dial before you dig, they will send out drawings from every utility that responds. The borers then go out and mark the road etc with that info.
The directional boring head starts its downward drive into the ground and the operator has a probe that he walks along the desired path with a preset depth. As he walks along the drill head follows at the depth they wish to bore at, once at the other end they remove the drill head and attatch the pipe, they then pull the pipe back.
The probe unit usually has all the depths preset in for the route,
Last job we did half melb CDB like this

[ozwinner]

Freakin hyjackers.


Al

[bitingmidge]

The probe unit usually has all the depths preset in for the route,

See Al, I TOLD you they were aliens!!

Cheers,

P

[Bob Willson]

What does it matter Al, so long as you're getting your pipes laid.

Personally, I think they do it all with magnets.

[macca2]

The boring head has an inbuilt transponder and the guy up top can tell the depth and direction by placing the locator over where the drill head is.
The head has a chisel point on one side and by rotating the drill they can change direction up, down,and to the side as the drill will move in the direction away from the side with the chisel profile.
Not rocket science but it works

Macca

[ozwinner]

Thanks Macca.


Al

[Iain]

And after the pipe is installed they say 'you wanted gas?, this is the water pipe'
Hear power is coming through your way soon