Chapter 984: In full swing (first two chapters)
Below the auxiliary dam of the reservoir, a V-shaped lime-white line has been pulled on the ground, and at the top corner of the V, there is a white square.

Several small excavators are making deafening "da da da" sounds, digging hard along this white line. A few hundred meters behind them is the slowly rising water level. The elevation of the flooded range line is slowly rising and the range is rapidly expanding.

This is a plain reservoir. The slope ratio here is very small. If the water level rises by one centimeter, the flood range line will extend forward by one or two meters.

For these small excavators converted from agricultural machinery, digging this trench, which is about 150 meters long, tens of centimeters deep and less than one meter wide, is not difficult at all. Moreover, it is mainly earthwork, which is much easier than stonework.

The excavator driver was also considerate enough to smooth the surface of the trench as much as possible.

And next to them, many comrades are lined up and also digging. We cannot rely solely on excavators, so the more we can dig, the better.

In addition, some excavators were working backwards on the auxiliary dam to flatten the uneven areas on the auxiliary dam as much as possible to improve the effect of the spraying.

On the top of the dam above the water collection pool, a single-cylinder diesel engine and a vacuum pump combination are being installed, next to which are barrels of diesel. Several water pipes about ten centimeters thick are placed along the water-facing surface of the auxiliary dam to the water collection pool. Once the water collection pool is dug out and the spraying is completed, the pipes can be put in.

"Comrade, these three pipes have been arranged. One is the main one and two are spare. Two spare diesel engines and vacuum pumps are placed on the left dam shoulder. Once this set is installed, it can be taken out and installed at any time."

"Yes! I know." A comrade who was busy installing a diesel engine answered without raising his head, but he knew that there must be two sets of equipment waiting for him on the left dam shoulder.

These two sets of spare equipment are designed to prevent damage and to prevent one set from being insufficient so that three pumping pipes can be used to pump water simultaneously.

Just on the top of the auxiliary dam and the back water side, sheets of tarpaulin were pulled open, and comrades holding tools were riveting the tarpaulins, while other comrades were holding spray cans and spraying liquid of unknown substance onto the overlapping areas and the surface of the tarpaulin.

The tarpaulin is divided into many sections, otherwise it will be too heavy to move and the next step of construction cannot be carried out. The remaining follow-up work will be carried out after the laying is completed.

"Hey, look, this stuff works great when sprayed on. It dries in a moment and is waterproof!" A female comrade laughed as she sprayed. Her silver bell-like voice seemed a little muffled due to the influence of the mask, but her mood was extremely cheerful.

This immediate and highly targeted effect makes people more and more confident.

In a basket nearby, there was already a pile of empty cans, ready to be transported away.

"Of course not. These are all ideas from experts who came from Beijing to provide support. They are so talented, how can they not work? I think it's right!"

In mid-air, a helicopter made a special propeller sound and lowered a batch of supplies from the helicopter, mainly the latest batch of polyurethane spray that had just arrived at the airport.

A comrade on the helicopter laughed and said, "This search and rescue crane was not used when fighting dirty three, but I didn't expect to use it here."

The comrades below quickly took the supplies from the hooks, the helicopter retracted the ropes, turned around and flew towards the airport.

At the same time, on the top of the auxiliary dam, several containers filled with quick-drying concrete slurry and spraying equipment were lined up, waiting for spraying. These equipment were connected to an air compressor, and a single-cylinder diesel engine was responsible for providing power for the air compressor.

"It's time to spray the slurry!" At this time, only about 7 hours had passed since the emergency plan for the auxiliary dam was released. The sky was getting dark. The small excavators working on the water-facing side of the auxiliary dam had withdrawn to the side. They could not leave now. After the geomembrane was laid, they would bury the bottom edge of the geomembrane in the soil and compact it.

Several searchlights, powered by diesel generator sets, provide light for the construction site.

"Okay, spray!"

With the cheerful roar of diesel engines and air compressors, concrete slurry quickly covered the surface of the auxiliary dam, forming a gray-black coating.

Behind the excavator, the water level was still rising, but the comrades' faces showed only the hard work of fighting, but no despair or sadness.

In the distance, at the breach of the hanging river, people were coming and going, cars were shuttling back and forth, and helicopters were lifting materials in the air.

A large group of comrades were weaving wire cages using the wire that had been brought in at the breach, while another group of comrades were filling sandbags with soil and putting the sandbags into the wire cages. There were no rocks in this place, so this was the only way.

We have been using bamboo cages and wire cages to fill them with heavy objects and to build water-retaining hydraulic structures. This method has been used for thousands of years and our comrades are very familiar with it. Fortunately, we no longer need to weave bamboo cages and wire cages are much faster to make.

Here, iron wire is better to use than steel wire. Steel wire is too tough and difficult to shape and wrap, so it is not as good as iron wire.

"Comrades, please pay attention. The wire cage must not be too large, and the sand bags inside must not be filled with too many. If they are too large, it will be difficult to transport and will not be effective."

The woven iron cages were pushed into the river nearby. The wooden stakes nailed down in advance by a group of soldiers would help them stop and block the water flow.

Although the breach was slowly but steadily extending forward from both ends, several iron-hulled ships filled with sandbags and with a deep draft were fixed on the river surface one or two kilometers away from the breach. When the breach closed to a certain extent, it would be their time to show their skills.

"How is the situation now?" A concerned voice came from the radio of the blocking command center. "It's going relatively smoothly now, everything is going according to plan."

"Can you speed up a bit?"

"We will try our best, but this is the fastest speed. It will be difficult to increase the speed even if there are more people. After all, the working surface is so wide."

"Then you must keep up the pace and not fall behind schedule!"

"Guaranteed to complete the mission!"

On Gao Zhendong's side, nine hours after the plan was made, two helicopters finally delivered the first batch of components and equipment, as well as some personnel.

According to Gao Zhendong's arrangement, the first batch of various components used for the test were processed within two hours, and he and some personnel rushed to the test site first.

By this time it was completely dark. With the support of searchlights, the comrades did not care about time and directly began to assemble components, melt explosives, install electric detonators and other tasks, striving to complete the test as quickly as possible.

The first batch of three fitters all came from the Third Rolling Mill, led by Yi Zhonghai. They brought some tools and, most importantly, measuring tools.

"Chief Engineer Gao, we have inspected this batch of components many times in the factory, and they definitely meet your required dimensions. Deputy Director Liang Faming and others from the Technical Department of the Third Factory will organize full production." Yi Zhonghai said to Gao Zhendong.

Gao Zhendong and the blasters quickly and carefully conducted an appearance inspection of the components and measured some key parameters, confirming that they had not been damaged or deformed during transportation.

There is no need for further inspection. As long as there is no damage during transportation, Gao Zhendong believes that the inspection by the comrades at the Third Rolling Mill is sufficient.

"Okay, melt it immediately and start assembling." Gao Zhendong ordered.

He had just given the order when he was resolutely driven out of the testing ground by two comrades.

"The leader has ordered that you cannot be here during the assembly process." The two comrades were very determined; this was their mission.

Gao Zhendong tried his best to get it but to no avail. He was driven out by several comrades on the pretext of "orders" and "taken" into a tent next to the test site. He had no choice but to turn around and call Fang Yinghong and another comrade in charge of electronics from the Technical Department of the Third Factory.

He called them over specifically as they needed help with some auxiliary equipment.

"Sister Fang, have you brought everything I asked you to bring?"

"I brought the stainless steel probe, the electronic components you requested, the pressure membrane box, the copper foil breadboard, the welding equipment, the waterproof glue, and the analog meter. All in the quantity you specified."

"Okay, you follow this circuit diagram and start assembling and debugging immediately. You, assemble it according to this diagram." Gao Zhendong said to the two of them separately.

"Okay!" Fang Yinghong, a woman who was as brave as any man, acted without any hesitation. Another comrade was also full of fighting spirit and took action immediately.

Gao Zhendong also picked up the welding tools and started welding the circuit. This was all he could do now. Naturally, there were people at the test site responsible for assembling and cutting the charges.

Compared with the assembly, melting and cooling of cutting charges, and the welding of protective plates for test simulated gates, their speed here is much faster.

The circuits were not complicated. They were all things Gao Zhendong had made under his mentor in his previous life. Although the parameters of the electronic components were different, Gao Zhendong had already made corresponding changes when designing the circuits.

More than two hours later, while the cutting charge was still carefully melting the charge, they had already welded and debugged the first batch of six sensors.

Each person had two teams, the circuit was simple, and the drawings and components were ready-made. The three of them were all super veterans in this area, so they were naturally very fast.

These are three pressure level gauges and three soil moisture sensors. They look very simple and makeshift, but they have all the necessary functions and protections. After all, some of these things are designed to work underwater or in the soil.

Not to mention that this rescue operation is different from the common flood rescue operations and there is no disturbance from heavy rain. Even if it rains heavily, Gao Zhendong dares to say that although this set of things is ugly, its reliability is definitely no problem.

The pressure level gauge relies on pressure strain gauges to collect pressure and convert it into liquid level, while the soil moisture sensor collects soil conductivity through a stainless steel probe and then infers the soil moisture content.

In fact, even if the data is inaccurate, as long as the trend of change can be collected, it is very useful.

"Well, everything is fine. Let's go!" Gao Zhendong looked at the data on the meter, estimated the error, and then took the last pressure level gauge out of the water.

(End of this chapter)