"You are not from Beijing in this file, are you?"

"Yes, my hometown is from Hebei, and my grandfather's generation went to Beijing, so I used to fill in Hebei in my hometown," Yang Zijiang explained.

"Oh, what about me! Which district of Beijing are you in? ”

"Chongwen! Southtown's! ”

"There's no Chongwen, right? Aren't Chongwen and Xuanwu now merged, becoming New East City and New West City? ”

"Yes, the leader is so, but we still like to be Chongwen or Xuanwu!"

"Well, Beijingers miss the old," Director Xiong muttered, "do you live in Chongwen?" ”

"Ciqikou, the old Beijing bean juice, when I didn't move away in the early years, it was behind us!"

"Hey, get up, we're still serious about eight hundred fellows,"

"Really? Are you from Beijing? Doesn't that sound like that? ”

"Hehe, my ears are very pointy, I'm from Sichuan!" Director Xiong also smiled, "I am indeed not from Beijing, but I work in Beijing, and my home is settled in Beijing!" ”

"Yo, then you are also a high-tech talent? Where do you live? How is the family? "I haven't talked to anyone about my hometown for a long time, Yang Zijiang took a sip of fragrant tea, came to the spirit, and talked more.

"I studied in Beijing, and after graduation, I was transferred to a scientific research institute, and my family lives in the flower market, which is very close to you. My wife and children are now living in Beijing, but unfortunately they don't know I'm here! Director Xiong showed a look of regret.

"Then why?" Yang Zijiang doesn't quite understand that secrecy is secrecy, but it doesn't necessarily mean that it can't even be a place?

"I'm in charge of a separate project, which is currently in strict confidentiality. Even our people on the 5th don't know the specific content. So, you can't even talk to your family? Director Xiong explained, "What do you do, don't you know? The principle of confidentiality should be put in the first place, and it has reached the most critical stage, let alone let family affairs be distracted. Therefore, I can only work with my family, or at the original research institute. I can't let them know that I'm in the desert thousands of kilometers away! ”

"When it comes to state secrets, that's a must." Yang Zijiang understands this very well, when he first entered the system, the first lesson was confidentiality education, if you don't know, don't ask if you don't know, so he is also used to it. Moreover, what kind of place is this No. 5, it is a top-secret unit in itself, not to mention Director Xiong's project, which is definitely not something that ordinary people can know.

"Is home so far from here? Do you normally go home? ”

"I can't go back, I don't necessarily go back once a year, but I take the opportunity of a meeting to go back once in a while,"

"Don't you have family leave?"

"It's family leave, but the research has reached a critical moment, and even if there is a vacation, there is no time to go back, alas," Director Xiong let out a long sigh, "I really owe them too much!" ”

It can be seen that Director Xiong is very attached to his family, but he can't help it when he puts his work first. "Fortunately, when the child is older, she can take care of her mother, so although there are all kinds of worries, it is much better than when she was there!"

"You're a daughter?"

"yes? After graduating, I took the civil service exam, and I worked not far from home, from 9 to 5, so that I could take care of my family! ”

"Hey, that's much better, the work is close to a treasure, at least you can save a lot of time on the road, in the future, you have an eyebrow on this topic, back to the research institute, the family is happy and beautiful, envy, envy!"

"Hehe, okay, I love to hear what you say!" Hearing Yang Zijiang come here, Director Xiong's face was full of laugh lines.

"I see that you are grizzled, did you get to the top of the cave?"

"Yes, Yin Zhiqiang followed me about the situation in the cave, and as soon as I was in a hurry, I climbed up to investigate, or I would have come over a long time ago!"

"Found a problem?"

"Basically found,"

"Then you, what's the crux of the problem?"

"Capillary leakage, that is, in the season when there is more rainfall, the rain seeps down the crevices in the rock. When it encounters a low-lying place, it will accumulate there, which will cause corrosion over time. Because the crack is not big, it will not drip or even leak, but it will continue to condense, and after a long time, there will be water droplets above the cave wall. "The starter. m..

"Hey, your theory is very interesting, after a long time, doesn't it become a capillary siphon phenomenon?"

"Yes, after a long time, the pressure inside and outside the cave is uneven, which will cause your siphon phenomenon,"

"Then if there is a heavy rainstorm that has not been encountered in a century, it will not collapse?" It can be seen that Director Xiong is really worried.

"That's not going to happen, the quality of our construction is here, but if it's time to dig a cave, then it won't be able to keep it. Because there is groundwater in the rocks, once the geological structure changes, it will cause the phenomenon of water gushing, dissatisfied with you, we encountered this project, the amount of water inflow is very large, and later formed a mudslide, almost killed people, "here, Yang Zijiang is still a little afraid."

"Then why didn't you make a detailed operation plan when you were surveying the geology at that time?"

"Yes, from the early geological survey, we knew that there was a place where water gushed, so the plan we adopted was to change the construction to sealing, and there was no problem,"

"Then how did the water accident happen?"

"So with you! You know that when doing a high-grade shield tunnel, in order to prevent accidents, the core of external waterproofing is to take the waterproofing of the lining segment joints while constructing. Now the domestic neoprene elastic gasket is used, while the shield machine is moving forward, it will backfill and grouting around the outer edge of the lining ring, which is particularly scientific to prevent this from happening. Truth be told, who can guarantee that there is no water in the formation? ”

"I know this, in geological structures, there is often this phenomenon, where there is a large amount of water, it is like an underground reservoir,"

"Yes, usually the geological structure is not destroyed, there is no change, that is not a problem at all, once the geological structure changes, the water gushes out in an instant, and the destructive power is unimaginable. Sometimes, it will cause the entire cave wall to collapse! ”

"Do you have a specific plan?"

"I just went up to check it out. Do that kind of large-scale waterproofing, because you can see and touch, it's easy to do, and the most afraid is our No. 5 situation, which can't be seen or touched. Therefore, there must be a particularly ingenious way to find the source of the leak, and then use a special plugging agent, you can have no worries! ”

"Oh?" Looking at the brilliance on Yang Zijiang's face, an idea suddenly popped up in Director Xiong's mind..... read3;