Chapter 985 New Methods
Gao Zhendong called two people, said hello to the comrades who were fighting with the charge, and drove straight to the auxiliary dam. It would take some time here, just enough for him to do this.

"What? Comrade Gao Zhendong went to the auxiliary dam?"

The comrades from the water conservancy department almost jumped up.

He had just learned the name of this versatile expert through the Defense Work Committee not long ago, and he also learned some other things from the Defense Work Committee, not much, but enough for them to know where Gao Zhendong could not go.

"Yes, he drove there directly with his entourage."

"Call him back immediately!"

"I tried to stop him, but he said the auxiliary dam is safe now and there's no need to worry. He's just installing some equipment and it will be very quick." The rising water level is still far from the auxiliary dam and it is expected to take more than a day, so it is indeed very safe.

"Well... then, hurry over there and pull him back before the water level rises to a dangerous level!"

"Yes!"

The auxiliary dam is about two kilometers away from the main dam test site and is connected to it by a construction access road. Now this construction access road is crowded with vehicles coming and going. It is night time and the speed of movement is not fast.

If Gao Zhendong wasn't worried about any problems with the assembled equipment on the road, he would rather walk there faster.

Fortunately, the GAZ-69 is an off-road vehicle and has no problem handling this kind of construction road. While swaying, three people, each with two sets of equipment, placed the equipment on their thighs to ensure safety and moved forward towards the auxiliary dam.

On the auxiliary dam, several comrades were discussing something while driving a 100mm diameter steel pipe into a newly drilled hole.

"There won't be any problems if we drill three holes in the dam like this, right?"

"No, it's just a little bit. It won't affect the dam. And we have steel pipes to support the wall, so it won't have any impact. Quickly, pump out the sewage and pour the prepared sand and gravel. The expert team said that the equipment is on the way."

This is the pressure well prepared by Gao Zhendong for the three liquid level gauges. Holes are drilled directly on the dam body, from the water-facing side of the dam close to the elevation of the dam bottom to the dam top slightly toward the back water side, forming a three-point straight line. Through these three liquid level gauges, the water seepage situation in the dam body can be grasped, forming an infiltration line, which can effectively evaluate the safety of the dam. It is a widely used dam monitoring method in the 21st century.

As the situation was urgent, Gao Zhendong did not make the pressure testing well structure too complicated. It was enough to have sand and gravel to act as a filter layer. There was no time for anything else.

The three soil moisture sensors were made by him to monitor the water content in specific parts of the dam. This thing is not used in normal dam safety monitoring, but considering the special situation this time, Gao Zhendong made it anyway. It is always good to have more information.

"Here he comes!" The hydraulic engineering expert who was the first to leave the emergency plan meeting saw Gao Zhendong jumping out of the car and immediately went to meet him.

"Hello comrade, the pressure testing well is ready." After he left the planning meeting, he has been busy here, but still doesn't know what Gao Zhendong's name is.

"My last name is Gao. Thank you. We will install the equipment right away." Gao Zhendong introduced himself, then asked Fang Yinghong and the other person to install the equipment.

"Hello, Mr. Gao, my last name is Luo, you can just call me Lao Luo." Now he could finally call the person accurately. Anyone who could come here as an expert must be a chief engineer at least.

Watching Fang Yinghong and others lower the sensor on the cable into the well, Engineer Luo and Gao Zhendong discussed what the specific function of this thing was.

At first, the command center only asked them to prepare three holes and three shallow pits on the dam as required, but did not tell them what they were for.

While Gao Zhendong was watching Fang Yinghong and his team installing and calibrating the equipment, he was communicating with Engineer Luo.

After hearing the latter part, Mr. Luo, a hydraulic engineering expert, was surprised.

"Comrade, do you mean that this thing can monitor the water seepage situation in the dam at any time?"

Gao Zhendong nodded: "Yes, 24-hour uninterrupted monitoring, you can monitor as fast as you want, you can see it at any time in the reservoir management room, and with other equipment, it can automatically alarm and automatically transmit to the higher-level management agency."

"This is great! If this thing can be popularized, it will provide a very important means for dam safety monitoring."

Seepage pressure monitoring is one of the most basic monitoring parameters for dam safety.

As for Engineer Luo and his colleagues, there are ways to deal with the dam seepage problem, but it all relies on manual labor, the frequency is low and it is extremely inconvenient. For some locations, its monitorability is limited by the water level.

"I just made it to monitor the safety of the auxiliary dam." Gao Zhendong didn't care. He had seen this thing in some design materials at his elders' house in his previous life. He never thought it would be very useful. He just made it for temporary use. "Oh, Mr. Gao, you are wasting it. This thing is very useful. For us, it has solved a major problem in the safe operation of the dam! So, after this rescue is successfully completed, I will come to you, or you can come to our water conservancy department to give us a lesson. We must learn it well."

Mr. Luo felt that this comrade was simply amazing. He was surrounded by a treasure trove but didn't realize it.

Gao Zhendong didn't expect his reaction to be so big: "Uh... OK, no problem. I may not know what to test in this regard, but I know very well how to test it. If we join forces, it can be regarded as making some contribution to water conservancy."

Water conservancy is mainly about engineering construction, but auxiliary non-engineering measures also play a significant role. Gao Zhendong also knows some things. If this thing can be promoted earlier, it will be a good thing.

Now that we have single-chip microcomputers, many things have become easier to handle. Even if they cannot be fully rolled out due to cost issues, at least key projects will be fine.

Engineer Luo was extremely happy. He arranged and directed Fang Yinghong and others to pull the line to a tent on the dam shoulder. This was his on-site command center here.

Fang Yinghong and his team unloaded a solar panel and a battery from the car and began to connect the power supply. These sets of equipment are monitored regularly and actually do not consume much power. The solar panels and batteries can ensure maximum availability.

"Huh? Mr. Gao, this doesn't require electricity, it can be used with batteries?" Solar panels are not popular yet, so he doesn't know what they are.

Gao Zhendong shook his head and pointed at the solar panel: "Not only that, but also this solar panel. If it is properly matched, it can ensure 24-hour operation even in continuous rainy days."

"That is to say, this thing has nothing to do with the power supply of the reservoir itself?" Mr. Luo felt like he had found a treasure.

"No, I designed this equipment for field work, so I definitely have to consider the power supply issue."

"Good! Great! Mr. Gao, you must teach me!" Engineer Luo was even more excited.

At this time, Fang Yinghong and the other two comrades had already connected all six sensors. After looking at the LED digital tubes on the six meter heads, Fang Yinghong confirmed for a while and said to Gao Zhendong: "Chief Engineer Gao, everything is normal. We can start the pipe opening and covering the soil. I will go and watch them cover the soil."

The mouth of the pressure measuring tube needs to be processed to prevent mud and sand from falling, and the soil moisture sensor needs to be covered with soil to ensure that the environment in which the sensor is located can accurately measure the moisture content. Gao Zhendong only measured the surface layer, not multiple layers. This is a special case, so this is almost enough.

After all these are done, the geomembrane can be covered.

Fang Yinghong and another comrade left to direct the comrades in related work.

Engineer Luo looked at the basically stable data on the six meters and asked Gao Zhendong about the meaning of the data and the corresponding conversion method. Gao Zhendong did not have time to program the microcontroller to convert the data according to water conservancy standards. All the data were raw data and needed to be converted before they could be used by Engineer Luo and his team.

For example, after obtaining the relative liquid level, a base value must be added to obtain the altitude data used in water conservancy.

But the conversion is very simple, and Mr. Luo can do it with mental arithmetic.

"Well, judging from the data, there is no water in the auxiliary dam, and the water content of the surface layer of the dam facing the water is also very low. It is completely consistent with the current situation." Mr. Luo was very happy. At least for now, it seems that this thing is really reliable.

"As long as it works, Mr. Luo, when my comrades come back, I'll leave you a person to keep an eye on these things. After all, these things are made for emergency situations, so he can handle any problems. I can also leave you a person who focuses on the data so that you can keep abreast of the situation."

"Okay, okay! Thank you so much. Can we also install such a set at the main dam?" This set of things is good! Don't dismantle it after you install it. Just install it at the main dam as well and take advantage of the brother ministries.

"Well, one of the comrades I brought with me will continue to work on the main dam and try to install the main dam as well. The situation here is urgent, so I will install this side first." The materials that Gao Zhendong asked Fang Yinghong and others to bring were originally calculated based on the main and auxiliary dams.

Fang Yinghong can make the remaining six slowly, and there is still enough time.

"Mr. Gao, the auxiliary dam has started to be covered with film!" Fang Yinghong and another comrade were very excited. This was a very novel experience for them, and the atmosphere at the rescue site made them unable to stop.

This is the same as a child who can stand and watch for hours when seeing an excavator working on the side of the road. Only this kind of large-scale and significant scene has a greater impact on people's emotions.

"Well, although the surface spraying has not completely dried, it mainly plays an auxiliary role. Our film covering schedule is still based on completing the geomembrane covering operation as soon as possible. Now the time is almost there."

Mr. Luo and Gao Zhendong walked out while Mr. Luo explained the situation to Gao Zhendong.

When we walked outside, we saw groups of rescue workers carrying rolls of processed anti-seepage membrane, placing them on the top of the dam, and then pushing them towards the water-facing surface of the auxiliary dam. The rolls of anti-seepage membrane rolled down and covered the water-facing surface of some sections of the dam tightly.

(End of this chapter)