On the west bank of a large river, the westernmost part of a mountain range, Gaoli Mountain is like the jade of the southwest province, quiet and dazzling. One of the longest railway mountain tunnels in southwest China, the construction site of the Gongshan Tunnel of Lixi Railway is in the mountains.

The Lixi Railway, with a design speed of only 120 kilometers per hour, has a total length of only 330 kilometers. If measured only from length and speed, it seems to be just an insignificant "short horizontal" in the map of the Chinese railway.

However, the value of the Lisi Railway cannot be overlooked. There are more than 10 ethnic minority areas along the Lixi Railway, including Bai, Yi, Hui, Lisu, Miao, and Naxi, and after completion, the travel time between two prefecture-level cities in southwest China will be shortened from the current six or seven hours to about three hours.

As a line of poverty alleviation, national unity and international cooperation, the construction of the Lixi Railway is urgent, and the 14.5-kilometer Dagongshan Tunnel is an obstacle that this railway cannot bypass.

The tunnel passes through 11 lithologies and 7 faults in the inlet section alone, and 8 lithologies and 5 faults in the exit section.

Riding in the off-road vehicle, Liang Zhijian was still thinking about the difficulty of building this tunnel.

The key point is that in addition to the longest tunnel on the Lixi Railway, there are dozens of other long and short tunnels, and the excavation of the tunnel is very large.

"We hope that the shield machine of Jiuzhou Heavy Industry can meet our requirements. Liang Zhijian thought so in his heart.

Since receiving a call from Xie Zhenhua last night, Liang Zhijian has not slept much all night. On the one hand, I was excited, I didn't expect that there would finally be a domestic enterprise that could produce and manufacture a large shield machine. On the other hand, there is the fear of disappointment.

I was worried that I rushed to Shenhai City with hope, but the shield machine of Jiuzhou Heavy Industry was not as good as Xie Zhenhua said on the phone, and it could not meet his construction needs.

The off-road vehicle drove along the mountain road, and only traveled about a dozen kilometers before Liang Zhijian received a call from Li Huakun, general manager of the railway engineering project department.

On the phone, Li Huakun said anxiously: "Chief Engineer Liang, our 'Robbins' is stuck again, and it is estimated that it will be suspended for at least 20 days." ”

What the!

Liang Zhijian's face changed slightly. Robbins, an imported 6.39-meter-diameter TBM, is undergoing tunnel boring work, and since its construction, it has been stuck twice, each time and has to be stopped for at least 20 days.

Unexpectedly, it was stuck again, it was really a roof leak that was rained overnight, and when it was needed to excavate the tunnel, it actually dropped the chain again.

Xiao Liu sat in the co-pilot seat of the off-road vehicle, probably heard the content of the phone, measured his head and said: "Leader, the cumulative tunneling length of this 'Robbins' is only 900 meters, and it is actually the third time that it has been stuck, hey......"

Liang Zhijian was helpless for a while, and also sighed, this "Robbins" is still one of the main shield machines imported from abroad at a high price, and the Lixi railway tunnel construction is one of the main shield machines.

During the phone call, Liang Zhijian instructed Li Huakun to hurry up the repair of the equipment and get the "Robbins" back to work as soon as possible.

During this call, Liang Zhijian thought more strongly in his heart, Jiuzhou Heavy Industry, don't let me down, we really need a large shield machine.

……

Deep Sea City.

Taking the plane, Tang Fei came here again. However, this time he was not alone, but accompanied by Li Xueyan. In order not to be separated from Tang Fei, Li Xueyan asked for leave to come over together.

Walking out of the airport, Tang Fei saw the person and the car who came to pick him up, took his girlfriend's hand and said, "Let's go, let's get in the car first." ”

It was Liu Shiwei who came to greet him, knowing that Brother Fei was coming to Shenhai City again, he insisted on coming to the airport to greet him, so Tang Fei didn't insist, so let him come over to greet him.

"Phineas!"

Liu Shiwei walked over quickly, he hadn't seen him for a while, he seemed to be a little fatter, and when he walked, the fat on his body trembled.

Tang Fei smiled and jokingly said, "Fatty, it seems that your days are very moisturized, and you have gained a lot of weight." ”

Li Xueyan covered her mouth and chuckled beside her.

Liu Shiwei scratched his head and said with a smile: "No, no, I've only gained a few pounds this month." After speaking, he greeted Li Xueyan warmly, "My sister-in-law is also here." ”

Li Xueyan's face was slightly red, and a "sister-in-law" made her a little embarrassed, and she felt a burst of joy in her heart, sweet.

Tang Fei saw that his girlfriend was a little embarrassed, so he hurriedly waved his hand and said, "Let's go, get in the car, we have to go back to the big villa first." ”

"Okay. Liu Shiwei agreed loudly, and enthusiastically opened the car door, asked Tang Fei and Li Xueyan to get in the car, and then he personally drove away from the airport and went to his big villa.

……

Jiuzhou Heavy Industries.

Zhu Yifeng is in the assembly plant, the huge workshop is different from before, now there are many workers are busy, and there are also large shield machines starting to assemble.

One large and one small, a total of two.

The small one, said it is small, but relatively speaking, in fact, it is not small, with a diameter of 6.3 meters, and after the assembly is completed, the length will reach 65 meters and the weight will reach nearly 500 tons.

The other, much larger, is a veritable "Big Mac" with a length of 230 meters, an excavation diameter of 9.03 meters and a weight of 1,900 tons.

A total of two large shield machines have begun to enter the assembly of the first one, such a progress, Zhu Yifeng is obviously more satisfied.

The 6.3-meter-diameter shield machine will be manufactured in succession, because it already has its first order, and Shenhai City has ordered several units for the construction of the Shenhai Metro Tunnel.

"Well, the boss will be coming to Deep Sea City today, so he should have arrived. Zhu Yifeng thought so in his heart.

Originally, he took the initiative to ask Ying to go to the airport to pick up Tang Fei and go directly to Jiuzhou Heavy Industry, so that Tang Fei could take a look at the two shield machines that had entered the final assembly.

However, after the phone call, Tang Fei said with a smile that he was a little late, and someone had already taken the lead, so he would not come to the airport to greet him.

Zhu Yifeng even thought in his heart, could it be Lao Yang, he knew that the boss was coming to Shenhai City, so he called early and asked to pick up the boss at the airport.

In fact, it was not Yang Chenglin, but Liu Shiwei of Wanheng Real Estate, Zhu Yifeng did not think about this. Now, Tang Fei has arrived at his big villa, and maybe, tomorrow he will come to Jiuzhou Heavy Industry.

Looking at the two large shield machines in front of him with satisfaction, as if they were two giants. Zhu Yifeng also thought with satisfaction, this plant is good, high enough, big enough, not to mention the 9-meter shield machine, that is, in the future, it will produce and manufacture a super shield machine with a diameter of more than ten meters, and it can also be manufactured here.

Workers are working in an orderly manner, and there are technicians next to them to guide them.

The assembly process technical data is ready-made, all from the system, how to assemble, the process data is clearly written, what to do in the first step, what to do in the second step, completely in accordance with the data.

The crane in the factory is lifting a big guy, which is slowly, slowly, and carefully aligning and assembling, which is a large part of the shield machine.

"Okay, come down a little more!"

"A little further to the right. ”

Someone was commanding loudly, and after several workers saw that they were aligned, they began to assemble this large part, and everything was in order.

After a look at the assembly site, Zhu Yifeng thought in his heart, judging from the current situation, the first large-scale shield machine was successfully assembled, which should be much earlier than expected, maybe in another ten days and half a month, and the first one can be assembled in more than 20 days without the expected time.

The next day.

At about a quarter past eight in the morning, only a little later than the employees went to work, Tang Fei personally drove to Jiuzhou Heavy Industry alone.

Yesterday morning to Shenhai City, did not rush over, mainly to accompany his girlfriend to take a break, went out for a walk in the afternoon, this morning to Jiuzhou Heavy Industry.

Choosing to come to Jiuzhou Heavy Industry first, rather than Jiuzhou Electronics, of course, is not only to take a look at the shield machine that has entered the final assembly, but also to know that Liang Zhijian and others will come over this morning.

Last night, Tang Fei also specially checked the Charisi Railway on the Internet, and knew that although this railway line is only more than 300 kilometers, the construction difficulty is not small, especially the excavation of the tunnel is very large, including the Dagongshan Tunnel, which is 14.5 kilometers long, with complex geological conditions, and requires a very advanced hard rock boring machine, which is also one of the shield machines.

Its own Jiuzhou Heavy Industry is trial-producing a hard rock boring machine with a diameter of more than 9 meters, which is specially tailored for the construction of railway tunnels.

Tang Fei thought in his heart that his hard rock boring machine could be placed on the Lixi Railway to try its performance.

Tang Fei wanted to have a good talk with Liang Zhijian, and also wanted to open up the market for domestic railway tunnel shield machines, so he went to Jiuzhou Heavy Industry early today.

"Boss, our 6-meter and 9-meter large shield machines have entered the final assembly process and are being assembled in our huge final assembly workshop, why don't you go and see it now? ”

Tang Fei raised his hand to look at the time, and then said, "Don't worry, wait a little longer, we have a few guests, and we should be arriving soon." ”

Zhu Yifeng said in surprise: "Boss, you are talking about Chief Engineer Liang Zhijian and his party. ”

"Yes, they should have already arrived in Shenhai City, and they will come to our Jiuzhou Heavy Industry this morning. Tang Fei said.

Sure enough, they didn't wait long, and before nine o'clock in the morning, Liang Zhijian and a group of five people took a car to the gate of the Jiuzhou Heavy Factory area.

After getting off the car, Liang Zhijian looked at the factory, and then looked at the brand of Jiuzhou Heavy Industry, took a deep breath, tried to calm his agitated mood, and thought in his heart, we are coming, don't let us down, here, there must be the kind of large shield machine we want.

……

Continue to three more today, the first one will be sent!