"I have a bad feeling..." Zhang Panpan suddenly turned around and said to Tang Lin while walking. Tang Lin was stunned and his heart tightened, but he remained calm on the surface, "This is not what you, an engineer, should do.
That being said, don’t you all have to look at data, evidence and calculations?”
But Zhang Panpan's face became more serious, "Tang Lin, I'm not kidding you. Normally, there is no problem with the dam, but there is one piece of data that I haven't gotten into my hands for a while, and that is the connection between the right side of the dam and the mountain.
Technical processing and material processing of joints. Our attention has always been on flood discharge and walking on the main body of the dam, but the joints of the dam that are directly combined with the mountain rocks are the most dangerous hidden items, so
I'm worried. When I get there, I must check the seams carefully to see if there is any leakage, even if it is extremely small."
Tang Lin nodded. Of course he had no objection to this. His heart also tightened, but he couldn't panic. Even if he really found a leak in the gap, he had to hold still. But Liang Shuang immediately raised a practical question, "
Mr. Zhang, it rained heavily for three days in a row. It’s impossible to tell whether it’s penetration or rainwater!”
Tang Lin followed Liang Shuang and looked at Zhang Panpan. Zhang Panpan bit his lip, "That's why I said I have a bad premonition because it's difficult to check clearly in a heavy rain. If there is really any substantial progress, I'm afraid I can only send someone down to use a sponge."
It absorbs water, but with the current weather conditions and the height and angle of the dam, it is too difficult and dangerous to send people down. We cannot send people down until we are sure that there is real leakage. We can only observe, and there is limited information from above.
Looking at the space, in fact, the most dangerous thing is not the leakage from above but the leakage from the bottom. But now the external water level at the bottom is at least about 4 meters. How to check? Diving? But I judge that if there is leakage below, it is more than 4 meters to 10 meters.
The height will also vary, because those below 10 meters are immersed in the lake water almost all year round."
The people next to him also became heavier and heavier as they listened, but they had to focus on the inspection and measurement at hand. Tang Lin pulled Zhang Panpan aside and asked in a low voice, "Are you so sure it's not just a hunch? Just tell me the truth.
." Zhang Panpan took a long breath, "This matter is still a hunch and a basic judgment. Today I calculated the unit precipitation, the overall volume of the library, the dividend distribution capacity of the pass, the delaying effect of the swirling sandbags, and then calculated factors such as flood discharge and evaporation.
I noticed that there was a gap. Of course, the gap was not big and it was within the acceptable range. However, I was always unsure. The stones in the Dongshan Mountains are similar to granite. It would be fine if soaked in water for decades. But this place itself is
Lakes, so have these rocks been soaked in water for decades, hundreds, or thousands of years? Dongshan Reservoir lacks a lot of information, so I am worried, because this kind of joint leakage is difficult to find and difficult to control and cure.
, especially when the flood season is ahead of schedule and there are always continuous heavy rains, I have to make a more pessimistic prediction."
"I was in a bad mood just now, but luckily there were only a few of us and the soldiers around. Let them keep it secret for the time being. This matter cannot be leaked or cause panic."
Tang Lin did not let her go but continued to ask, "What if it has started to leak? What is the most serious consequence?" Zhang Panpan looked up at the turbid lake water discharged downstream, "Internal and external forces work together and eventually the spring collapses.
Dam. Because if it has already penetrated, the water will have penetrated deep into the dam body from the gaps. This dam will be 40 years old soon, so the situation is not optimistic!" Tanglin paused, "If it is found that penetration is the most effective and feasible right now,
What is the control method?" Zhang Panpan thought for a moment, "The simplest and most effective way is to use huge rocks and stones at and around the joints from the lowest end of the dam submerged in the lake to the top of the dam.
Mix sandbags and then use high-strength iron wire to make a temporary sand and gravel wall, which can at least survive the flood season this summer. However, the sand and gravel wall is easier said than done and very difficult to construct, especially in such heavy rains!
"
Tang Lin raised his hand and touched his nose, "What if we use a gravel wall here to temporarily control it and then seize the time to trim the No. 2 Dam below? I have studied the design drawing of the No. 2 Dam, and I found that the No. 2 Dam is actually a buffer.
, even if the construction is not completed, the flood storage pressure of No. 1 Dam can be greatly relieved. Moreover, the connection of No. 123 Dam is in a zigzag shape, that is, after trimming No. 2 Dam, it can be dug 1000 meters to the right of No. 1 Dam. Although
I’m not an expert, but I think Grandpa Liang Shuang’s design is awesome and smart, really!”
Zhang Panpan couldn't help but want to laugh when he looked like that, and his gloomy mood finally relaxed a little, "Tell the truth, how deep your feelings are for this reservoir?" Tang Lin was stunned for a moment, then his eyes looked deep, "Not too deep.
I think the reason why I work so hard now is because I have the idea of being a soldier in my heart. When I see this situation, I will instinctively want to rush forward to solve the problem. Of course, it is also related to future economic interests, but the proportion is not that big!"
The two of them continued to check and measure without saying anything. This kind of work cannot be rushed, and one data must be measured at least three times in a row and then averaged, so the progress was very slow. When they finally arrived at the southern section of the dam
An hour and a half has passed.
Zhang Panpan thought of several ways to measure and observe on the top of the dam, but the results were very poor. Although the rain was not heavy at this time, standing on the top of the dam was like being stuck in the water and could not get any substantial progress or data.
Seeing this situation, Tang Lin no longer hesitated and ordered the soldiers behind him, "Are the safety ropes, sponges, flashlights, and walkie-talkies all ready?"
The leading soldier from behind immediately reported loudly, "Report to the leader, preparations are complete, request to carry out the mission in person!" Tang Lin walked up to him and gave a stern order, "Give me the things, I will go down and you guys will ensure my safety on top. Use double safety ropes."
cable, one walkie-talkie on each side, a waterproof camera installed, and the sponge also put down with a safety rope to keep it in the same position as me!"
Because a large sponge is required, fortunately there is a spare in the reservoir area, so a safety rope is also needed. This is the simplest and most effective method. At this time, the dark clouds in the sky began to become thick again, and the visibility suddenly dropped a lot.
However, the leading soldier still insisted that he go down in person. Tang Lin shouted anxiously, "This is an order, execute it immediately!" The leading soldier had no choice but to start installing equipment on Tang Lin.
Liang Shuang and Zhang Panpan hurried over to persuade him, "You are not yet well yet, don't be brave. It's not yet clear whether it is leakage, so don't be impulsive." But Tang Lin kept silent and resisted silently. No one could undo what he had decided to do.
Not even the old man!
At this time, Squad Leader Zheng, who had just rushed back after receiving the intercom notification on the other side of the dam, rushed over desperately to stop him. Behind him, the CCTV reporter who had been persuaded by people from the Propaganda Department of the Municipal Party Committee to go directly to the upper district to interview Zhou Rentong was also keen.
Smelling a different smell, I rushed over with the machine and the microphone...