Hello, everyone.
This is Enta.
We're already halfway through the year!
Just the other day, everyone was talking about the COVID-19 pandemic and staying home, and now it’s already July 2...
Time sure flies, doesn't it?
I'll be popping around here and there again this month, so thanks for your support. lol
But that's beside the point.
This is Part 4 of the drilling done by Kronenbit the other day.
We completed the injection last time.
I forgot to mention this in the section on drilling, but when drilling with a crown bit, the crown bit itself has some thickness.
If the drilling length is 10 meters, the crown bit will not be able to drill the full 10 meters.
Please keep that in mind.
Insert the anchor body while the cement slurry fills the casing completely.
Retrieve the casing once insertion is complete.
When retrieving the casing, first reverse the direction of the casing.
Turning it upside down will unlock it.
Please check the video below.
I decided to post a video that isn't on YouTube lol
The reason is, why go out of your way to post such a pointless explanatory video on YouTube?
That's what I thought, lol (Or is it actually hard to read??)
Well, that's basically how it comes off when you flip it over like this.
However, for now, it's safer to flip it over while tapping it with a hammer!
Reverse the casing while tapping it.
Now, please try lifting it up.
As long as the anchor body hasn't risen, there's no problem.
If the level is too high, lower it and try again in the same way.
As you collect the casings, only the Kronenbits will remain and can be collected.
The important thing to keep in mind isInject additional cement slurry after each rod is retrievedPlease do it!
Since there is already pressurized water in this area, there is a very high risk that the cement slurry will be forced out unless it is continuously pumped in.
Every time you remove the casing, you need to refill it!
This completes the standard drilling, injection, and insertion procedures using the Kronenbit.
Did you get the gist of it? lol
Well, it's no big deal once you try it, so give it a shot.
See you later.
For inquiries regarding Kronenbit, please contact Fujiwara Industries.
Drilling in High-Pressure Water (Part 1)
