Do yourself a drilling ram how?

[Andy's]

I revive the discussion on the realization of a borehole with a high pressure cleaner because I have been fighting for a few days to dig my borehole with my karcher but in vain. The place where I can the area not being accessible I start to dig with my Karcher thinking that the earth will come out on its own on the surface by the pressure of the water but niet. While searching the internet I came across this wonderful site where you talk about it. The ground is not hard it looks like clay sand with some limestone pebbles it digs well hand impossible to get out the ground, I am 3 m, 2 existing made before by a tractor and 1 put in the Karcher but the water is 12 m away, so I am discouraged, do you have any advice to give me, thank you

[dedeleco]

Ask cuckoo for detailed advice based on past experience:
https://www.econologie.com/forums/post161870.html#161870
but for the water to go up the clays and sands it must be very fine so as not to fall back faster than the speed of the current of water going up.
A Karcher gives pressure, but often at a fairly low flow over a small diameter.
It is good for demolishing locally by the force of its jet, but its too low water flow over a large diameter rises too slowly especially if there are some stones.
One possibility after action of the karcher is to have a very high flow rate with city water in a large recycled settling tank with a powerful booster giving almost m3 / s, type fire engine fire engine ???
I think that except too large stones, the debris will go up with these flows.

It is necessary to measure the limit speed of fall of the largest debris to go up in water and to have a flow (speed per section of the pipe) giving a speed much higher than this speed. Then everything will go back up.

One way to reduce the flow rate is to decrease the diameter of the ascent pipe (example 5cm) by closing the junction between the base pipe (example 10cm) and this smaller annex pipe.

One solution is to break the pebbles with a very long or elongated pencil?

We come to pro drilling equipment!

The pros use heavy special viscous sludge where the debris falls slowly, which decreases the flow required to ascend.
But you need a special very heavy water pump !!

https://www.econologie.com/forums/post161910.html#161910

There the ideal solution is to use a large pump which removes water and rubble. Some use the pump from the sewage network truck.

Otherwise there are augers with small Archimedes screw diameters for digging at these depths which it is sometimes possible to hire.

[Andy's]

Thanks for all the technical advice. I tried this weekend a venturi effect system: I took a bucket and drilled in the middle then fixed a tube into which I inject water under pressure upwards. I manage to go up in the bucket a little earth and small pebbles but the big ones do not go up. Maybe my karcher is not powerful enough. I will try to make another system: a jaw like a clamp of the backhoe loaders which I will actuate with a bolt either hydraulic or electric and we will see. I'll keep you informed. Your advice is welcome Thank you

[Forhorse]

Otherwise with compressed air it can help: the bubbles go up at high speed, carrying the drilling debris in front of them.

[Andy's]

Why not but do you think that with an 8 bar compressor it would do anything? I only have that Thanks

[AXEAU]

Hello,

As with the karcher, what matters is more the flow than the pressure.
Some drilling is done this way, as soon as we see wet matter it is that we arrive at the water pocket.


jlg

[dedeleco]

If you send water well loaded with very fine sludge with a powerful pump with charged water instead of the Karcher (which only serves to demolish the agglomerated soil) you should do this much better with a low flow rate if the water is very muddy (very fine sand).
The viscosity then increases a lot and prevents large stones from quickly falling back into water, like jam or jelly.
You must have a soil without fine particles, which increase the viscosity.

But you need a special very heavy water pump !!

https://www.econologie.com/forums/post161910.html#161910
Quote:

There the ideal solution is to use a large pump which removes water and rubble. Some use the pump from the sewage network truck.

[Forhorse]

Why not but do you think that with an 8 bar compressor it would do anything? I only have that Thanks

The problem is not so much the pressure (8 bar it will allow you to go down to 80m, I doubt that you are there) but the flow.
But by hunting, with a 100l tank for example, with patience it should do it.

[Andy's]

Hello everyone, in fact my land at the bottom is weird. It’s like a bit sticky quarry sand, so clayey with some pebbles that are just compact blocks of fossils that do not go beyond a golf ball, like the earth on the surface is full of water hardly removes the water it folds again and I can't see the earth. So when I dig with my pointed pipe it is blind by tapping in the water I do not fit more than 10 cm. With an auger in hand I manage to return 30 cm no more and at times I hear crackles, it is the stones that break. With the Karcher the water becomes cloudy and with my pump by removing this water only the end seems to come out. which means that the stones end up staying. That's it and in any case thank you for your ideas

[oli 80]

Hello, here are two links to a very interesting tool for sucking muddy waters http://orpailleur.free.fr/drague.php
http://orpailleur.free.fr/oriege/drague_oriege.php

here it is used in gold panning, but can have various applications, at the request of dedeleco I add these links here, they are already on the subject of the pulser pump,

here are two videos of this tool
http://www.youtube.com/watch?v=DLJGkPqpZFk
small craft model
http://www.youtube.com/watch?v=g4KCxRDv ... re=related