In the conference room, Huang Gong listened to his uncle's words, looked through the information in his hand, and continued to speak: "Our fourth plan is more complicated, but it is also the only way to achieve long-term stability, that is, to build a tailings pond plot that can withstand various natural disasters, this method is very difficult to implement, and there are many majors and terms, so I will tell you directly." ”

"Good. The old man nodded.

"Our fourth plan, ready to find a suitable site, artificially build a foundation, and then build a tailings pond on this foundation, to put it bluntly, just like building a swimming pool, first fence the plot to build the tailings pond for waterproofing, and then build the tailings pond from this land, so that the requirements for the terrain can be reduced a lot. Huang Gong explained.

"Isn't this nonsense?" Shi Yigang listened to Huang Gong's words, and suddenly frowned: "Let's not talk about whether this method is feasible, let's start from the cost, it's not cheap, a while ago I had a classmate, borrowed money from me, said to build a swimming pool, but the money in my hand was not enough, so I borrowed twenty from here, and then I asked, his swimming pool has to invest at least two hundred, and how big is a tailings pond, we all know, you tell me, how much does it cost?"

"That's right, building a foundation by hand is indeed a more costly method. Huang Gong deeply agreed with Shi Yigang's words, nodded and looked at his uncle and Dongge: "If we adopt the fourth plan, the cost of this tailings pond will at least increase by more than five times, but this is also the safest and most once and for all way we can come up with." ”

"Five-fold?" After listening to Huang Gong's words, I also followed the flute, because the tailings pond is a big project, before I listened to my uncle when they chatted, I said that the investment in the tailings pond in the mining area is more than 10 million, if it really doubles fivefold, then the money we throw out, is really boundless.

A person next to Huang Gong saw our collective silence, and immediately added: "Although the plan we proposed will increase some investment, it is undeniable that this method is indeed the safest method, and it is also the safest way according to the current situation of the Shengdong mining area." ”

After listening to the words of several engineers, Dong Ge lit a cigarette and thought for a while: "If you follow your fourth plan, how long will it take for this tailings pond to be built?"

"It will take about a year. Huang Gong said logically: "This kind of large-scale waterproofing project is different from the infrastructure of the construction industry, it needs to be repeatedly measured and tested, so it will take at least eight months to complete, and then the interval of one month is stable, and finally the tailings pond will be built within three months." ”

"No, this plan doesn't work. After listening to Huang Gong's words, Brother Dong waved his hand slightly, and then looked at him with a positive color: "If I choose the fourth plan, within five months, can you build the tailings pond for me?"

"No way. Huang Gong also responded seriously.

"Whew!" After listening to Huang Gong's answer, Dong Ge exhaled a sigh: "Did the engineers and surveyors of so many of your companies get together for three whole days, and finally only give me such an unbearable conclusion?"

After listening to Brother Dong's response, Huang Gong and other experts lowered their heads one after another, their faces were gloomy, and after a while, an old man in his fifties raised his head: " Mr. Gan, although this result is very regrettable, but you can't blame us, because we people are engaged in scientific research, not magic, what we can do is to help you map out which plots in the mining area are suitable for building tailings ponds, instead of helping you conjure up a tailings pond out of thin air, now our calculation results have come out, in the Shengdong mining area, the most suitable for building tailings ponds, and will not produce any risk plots, there are only three groups of Aijia Village, but that piece of land is not yours, we really can't do anything about it。 ”

After listening to the old man's reply, the old man licked his lips: "Is it true that in the face of this situation, you really have no way at all?"

Huang Gong pursed his lips slightly: "It's a pity, we also want to help you think of a perfect solution, but there is really nothing to be done." ”

Huang Gong's voice fell, and next to these engineers and experts, a young man in his twenties suddenly raised his hand and signaled: "Actually, I have an idea, I don't know if I can say it." ”

"Oh, what do you think?" asked the old man with a sigh of character.

"Xiao Liu, don't talk nonsense on this occasion. When a middle-aged man saw the young man speak, he immediately scolded, and then smiled at his uncle: "Mr. Wang, I'm sorry, this child is an intern from the University of Geosciences who has just been assigned to us here, and he has just graduated from his junior year and has not yet graduated." ”

"It's okay, on this occasion today, isn't it just brainstorming, and it's better for someone to put forward ideas than for us to stare at them. The old man smiled and looked at the young man: "What do you think?"

"Mr. Wang, hello, my name is Liu Wen, and I am a student at the University of Geosciences. The young man first got up and introduced himself, then took out a piece of paper and drew a picture on it, which looked very much like a 'concave' character, and Liu Wen first circled the complete part under the concave character with a pen:" Mr. Wang, when we followed the survey team to measure, I once went to the plot of Aijia Village, and found that the plots of the three groups of Aijia Village were concave, surrounded by deep pits with a drop of more than ten meters, and this concave plot, the complete part of the plot below, belonged to Aijia Village, but when I dropped the map, I found that there were two protruding plots on it, which were within the scope of the mining area. ”

"Well, that's right. The old man nodded: "We have known about this situation for a long time, but now that the land of Aijia Village has been taken away, there are two enclaves in the mining area, which seems to be meaningless." ”

"That's right, the reason why we took a fancy to this piece of land in Aijia Village was because the geological structure here is different from other places, including the two convex plots, which are also different from other plots, but since the Shengdong mining area holds this land, we can completely fill the gap in this concave plot and make it a mouth-shaped deconstruction, so that we can avoid the land in Aijia Village and build a tailings pond on the edge of it. Liu Wen paused, wrote the word 'mouth' next to the concave character, and then spent a horizontal line in the middle, pointing to the upper part of the word '曰': "This is it!"

"Nonsense!" Huang Gong listened to Liu Wen's words, and suddenly scolded angrily: "Since you are a graduate of the University of Geosciences, how can you make such a low-level mistake, let me ask you, even if we fill in the gap here, but this location is just in the center of the tailings pond, not only does it have no water storage capacity, but the load-bearing capacity is also different from the marginal plots, do you know what kind of risks you will face in this way?"

"What if we fill the gap in the middle with the foundation in the fourth way you just mentioned?" I asked, looking up at Huang Gong.

"That's right, that's what I'm trying to say. Liu Wen heard my words, glanced at me, smiled at me, and continued to explain: " When I went to Aijia Village to investigate the plot before, I deliberately used an aerial camera to photograph the terrain there, and reduced the scale to simulate, and found that if we want to choose the construction site of the tailings pond there, then as long as the backfill and waterproof treatment are good, and in this way, even if we still use the fourth set of plans just mentioned, the repair area will be reduced by more than four-fifths, so that it only takes four or five months to build a new tailings pond. ”

After listening to Liu Wen's words, Brother Dong's eyes lit up and looked at Huang Gong: "Is the method he said feasible?"

"It's just kids' messing around. After listening to Liu Wen's words, Huang Gong waved his hand slightly: "A method that an intern can think of, do you think we will not be able to think of it, when the plan was formulated before, someone in our expert group put forward this idea, but it was ultimately rejected, because this plan can not withstand scrutiny, first of all, this gap is located in the center of the plot, and it is also the location of the future water storage, first of all, it will bear huge pressure, and this kind of filled plot, and the bearing point of the surrounding plot is different, it is easy to cause potential safety hazards." ”

"But compared to the previous three sites, this place is already considered to have the least safety risks, isn't it? After listening to Huang Gong's words, Liu Wen opened his mouth and said: "As long as the foundation of this place can be built, the seismic level should be fine, and it can also store water sources, so his risk is obviously much lower." ”

"What else?" Huang Gong heard Liu Wen's words and asked rhetorically.

"And?" Liu Wen was stunned: "What else?"

"We did the risk calculation before, there are roughly three, earthquake-resistant, waterproof, and safe, that is because we choose the address, the first condition is to build the tailings pond, and the risk is only these three points, and although your problem avoids the risk of earthquake resistance and waterproofing, but have you thought about the risk of the dam?" Huang Gong looked directly into Liu Wen's eyes: "If the foundation selected for the tailings pond is not stable, when the tailings pond is built, even if the ground can resist external factors such as earthquakes, but what about the dam? There is also safety, you only look at the floor plan, but when you look at the topography, don't you notice that the land is sloping, if the tailings pond is built on the three groups of plots in Aijia Village, when there is danger, the flood is along the valley on the east and west sides, but if you backfill the ground and move the tailings pond, in this way, the water flow will become a north-south direction, have you calculated?"

"I ......" Liu Wen was speechless when he was refuted.

After listening to the conversation between the two, the old uncle interjected a sentence in the middle: "Huang Gong, after listening to what you just said, can it be understood that if we backfill the gap in the land according to Xiao Liu's suggestion, we can solve the problem on the ground?"

Huang Gong nodded: "That's right, the ground problem can indeed be solved, but in this way, the dam body of the tailings pond will become very fragile, such as the explosion caused by some production accidents, which will cause permanent damage to it, and once the dam fails, it will not be able to find a suitable flood discharge point, other than that, there are no other problems here." ”

"There's nothing to worry about at this point, the tailings pond is just a reservoir, and there are no factories around, and the explosion of the production accident will definitely not affect there." Shi Yigang replied nonchalantly.

After listening to Shi Yigang's words, Dong Ge pondered for a moment and continued to speak: "If I choose the construction site of the new tailings pond here, within five months, can you guarantee the completion of the project?"