Chapter 191 Riverside cofferdam

With the support of modern machinery and a large number of laborers, it only took a little more than a month for a large pit to be carved out of the hard granite rock layer with a width of 30 meters, a length of 200 meters, and a depth of 15 meters. Pen × fun × Pavilion www. biquge。 info

This is the main body of the dock in Wei Minsheng's plan, and now it is facing the problem of how to connect with the Yangtze River.

After all, this is not a canal, and it is easy to say where there is no water, but once the place that separates the river water is excavated below the surface of the river, and the river water is poured into the dock, what will happen to the part below the water surface?

Underwater construction is not as convenient as land construction, and the current Wei Minsheng does not have the ability to excavate underwater granite foundations.

If you use explosives, although you can blow up this place, the place that is blown up must be strange rocks, and those granite edges and corners that cannot be removed at a depth of more than ten meters below the water surface may bring devastating damage to the huge ships entering and leaving the dock at any time.

In this case, the only way Wei Minsheng could think of was to build a cofferdam with dirt to block the surging river, and then pump out the river water in the cofferdam, and wait until the hard granite was treated, and then dig up the soil blocking the river.

Intercept the Yangtze River? Just kidding, the manpower and material resources used to build the Three Gorges Dam are unimaginable to Wei Minsheng now, but it is no problem to just build a cofferdam from the riverside.

It's easy to say, but it's very difficult to build a cofferdam in the middle of the Yangtze River.

The amount of soil that one person can move is too small, and if this bit of soil is poured into the Yangtze River, most of it will be washed away by the raging river, and there is not much left.

Moreover, the embankment of more than ten meters high is still very difficult for people in this world, not that the embankment of more than ten meters high cannot be built, but such a high water pressure difference cannot be eliminated by a thin ordinary earth dam.

Therefore, Yang Yong, the minister of construction in charge of the construction of Zigui Wharf, after consulting the state-owned assets, Wei Minsheng agreed to use excavators and dump trucks to fix the underwater foundation.

The involvement of excavators and dump trucks made these thousands of people stop what they were doing and unknowingly gather around them.

The team leaders assigned by Huaxia Villa couldn't greet them casually, so they could only smile self-deprecatingly, thinking that when they first saw these two monsters working, they were not so unbearable.

The two steel monsters hadn't shown their true strength since they showed their hands at the start of work, and those who hadn't seen them could only imagine their magic from the spitting words of others.

This time, the two steel monsters moved at the same time, judging from the momentum of drinking a large bucket of "water" in one go, are they ready to make a big fight?

When the excavator put a piece of boulder into the body of the dump truck, the steel giant beast that was said to be able to run non-fast with ten thousand stones and earth stones on its back was also trembling a few times, and the steel skeleton of the whole body also made a sound of "quack, quack, quack".

After all, there has been no movement for some time, and there are no special mechanical maintenance personnel in Huaxia Villa, so some places in contact with the shock-absorbing steel plates are a little rusty, and the sound of just moving is a little terrifying.

Wei Minsheng shook his head, it is not possible to go on like this, after the establishment of Huaxia Villa, it is necessary to train some mechanical maintenance professionals, otherwise this situation will not last long, and some parts will have to be scrapped.

But when this sound falls into the ears of those people in this world, the meaning is a little different, you see the way the monster is carrying these thousand pounds of boulders, it is clearly just stretching its muscles and bones and warming up.

The dump truck staggered along the road temporarily paved by the excavator to the riverside, and according to Wei Minsheng's plan, the boulders in the body were put down at the designated position.

In order to prevent the boulders from being washed away by the river, all stones with flat edges and corners were chosen, so that the shape of the stones was conducive to their foothold at the bottom of the river.

With the participation of excavators and dump trucks, the effect was immediately apparent, the river blocked by the boulders no longer had its former majesty, and the turbulent undercurrent beneath the surface of the water became docile.

Yang Yong saw that the boulders had already worked, and immediately organized people to fill the gaps between the stones with soil, and built a road suitable for vehicles to pass on the basis of the boulders.

Dump trucks use boulders to lay a solid foundation for the embankment, these handymen fill in the gaps and potholes in the embankment with fine earth and rock, and dump trucks that run back and forth further compact the embankment.

Such a strong dam cannot be built by pure manpower, at least not by tamping it.

With the mutual support of dump trucks and manpower, a solid embankment slowly extended into the middle of the river, and it took only two days to build a cofferdam around the exit of the dock.

The next morning, all we saw was a pond that was almost dry, a semicircular cofferdam blocked the river from the outside, and only a face-sized puddle and a thick layer of silt were left at the bottom of the pond.