How does the fishing bit work?

When piling on the site, the drill bit often falls off. A drill bit is expensive, so it would be a pity not to take it out. More importantly, if the drill bit is not taken out, the previously designed drawings and construction plans need to be pushed down and replaced, and the loss is too great.

The "Bitter Fisherman" on the construction site also has a name called "Water Ghost on the Construction Site". Simply put, piling is a bit off at a special construction site. This kind of drill bit is more than ten meters shallow and tens of meters deep, and this pile is full of mud, which is very difficult to salvage.

Extended data

1, the body must be healthy and strong, because under the pile of tens of meters, the surrounding debris flow pressure is great. Without a strong body, it is difficult to work in underwater mud, or even turn over, so it is not that simple.

2, the psychological quality must be stronger, fighting is a kind of courage, hurry down, tie up the bricks, and then let the machine pull up. Although the process here takes more than ten minutes, the courage inside may be that normal people dare not try, because there is mud all around, and they can only feel it, which can overcome that loneliness. People with weak psychological quality can't do it.

3. High risk: Although the income is high, the risk is great, because the newly driven piles are dangerous anyway. If they collapse, they may not get up, although the insurance claims will reach 654.38+0 million.