Rotary drilling rig pile, pile diameter is not the smaller the better to play?

Piling is a matter of experience, because there is not much data to refer to, and there are no relevant books to consult.

Today to talk with you, rotary drilling rig piling, is it the smaller the pile diameter, the better to play?

Now that you're asking that question, you should feel a little weird.

Do you know that under normal circumstances, the smallest pile of rotary drilling rig is how big?

600

Why is that?

I do not know the specific reason, it should be too small pile, and the hole formation efficiency of rotary digging has no advantage.

The smallest pile 600,

So, is 600 the best pile?

That's not true. Some people are willing to call 800 anyway

Piles, don't even want to touch the 600 hole.

The hole is too small,

First, the price is not high;

Secondly, the hole will not be fast, because it is not easy to unload;

It is difficult to discharge materials when the ground is too sticky.

What size pile is easier to hole?

In fact, it is not easy to hole, but the formation is not difficult to play the case, what kind of hole into the hole speed?

This estimate depends on data, and experienced people should have some experience, among which there is a "rotary mining method" which mentions that the pile is 1 meter pile.

Too small, slow discharge;

Too big, too much drilling resistance.

I still choose to believe this conclusion, after all, I have seen many houses built piles, and the feeling is really not so good, and the deeper the pile, the more troublesome it is.

I mean, it's small, but it's full of everything. What I just said is only the driving time of rotary digging.

The largest pile I have seen is 2.8 meters, and I heard that the largest pile is 4.0 meters.

According to publicity, the largest pile can be driven at present is 7 meters, the 1280 drill rig of mountains and rivers, the most in the world.

The larger the pile, the greater the resistance; The deeper the pile, the greater the risk; The harder the pile, the higher the price should be.

Some bosses dare to take on any job, and are quite energetic and energetic.

This is also very good, afraid of a big job is not good, if their economic strength is general, it is easy to lead to the break of the capital chain, affecting personal credibility.

Similarly, some bosses: more than 1.2 meters of piles have not been played, and some even do not want to play, the pursuit of stability, which is to establish a clear ability boundary for themselves.

Individual even, just in one area to take their own capable work, outside the area also do not go.

In fact, the more this is, the more stable his operation is.

END