Lin Gao Qiming

Chapter 66 Road Construction ([-])

This section makes some minor revisions based on the suggestions of book friends.

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"Commissioner Wang, it seems that the road construction will not be peaceful." Mei Wan said meaningfully.

"how?"

"I heard that the reconnaissance team that went to Lingao in the morning was attacked at Bairen Beach." Mei Wan said while spinning, dodging a big rock on the road.Ordinary people are not very clear about the Sino-American trio, thinking that they are also a reconnaissance team sent out.

"There is such a thing, how do you know? This matter has not been reported in the internal briefing yet." The situation reported by Guo Yi after he came back is still in the confidential stage.

"The corpses are all floating on the river beach. Anyone who is not blind can see them. What's the secret?" Mei Wan said, "In the new environment and atmosphere, let's not continue some stupid habits."

"What are you afraid of? More than a dozen people besieged three of them, and the same one was beaten back. Three of them were slightly injured, and several of them died." Wang Luobin pretended to be relaxed.

"You can't say that. It's scary to have a few cold arrows. Everyone can't work in stab-proof clothing on the construction site-it's too hot."

While driving all the way, he reflected on the problems in road construction: there are too few people who can drive bulldozers, and there are so many large machines that can only operate two or three of them; there is no safety helmet, although everyone has an 80 steel helmet, but it is very difficult to wear this on work. too tired.Suggest making a quick batch of wicker hats - they found some willow groves by the river; drinking water, now has to go back to the beach for daily refills.The body loses a lot of minerals and needs salt to replenish, and the planning committee refuses to distribute salt to them directly, saying that only the catering office can get it. It took a long time to talk about it before letting go and saying that this matter needs to be certified by the medical and health team...

"Also, there are only a few formal staff members in our construction engineering team, all of whom are technicians. The construction workers are all novices dispatched from the basic labor team. It doesn't matter if you don't have skills, we can teach them--migrant workers don't The same ability? But the problem is that we will change a group of people the next day-the average workload is called the United States and Japan. Please, this is not a big pot meal, can you engage in egalitarianism like this? Well, the previous batch has not yet learned , Another batch of new ones came, isn’t this a mess? You see, more than 300 people came to the construction site today, how much work did they do?”

"That's right." Wang Luobin was thoughtful. Most of the labor teams sent to the road construction site today were indeed out of work.

"We have to set up a special engineering team to carry out infrastructure construction, and the personnel must be fixed." Mei Wan said, "My requirements are not high, 50 people are fine, and the basic labor force can be sent to do the work."

The two talked about the road all the way, and came to the temporary road construction headquarters. In order to organize the construction nearby, this place is about 2 kilometers away from the camp. The conditions are very simple and there is no electricity.It's just a tent.

When we walked inside, the tent was still hot and dry after being exposed to the sun all day, and various drawing boards and surveying and mapping equipment were stuffed everywhere.Rolls of survey drawings were stacked on a large table.Mei Wan came up with a plan.

The route is chosen on the east bank of the Wenlan River.Compared with the west bank, the east bank of the river has more room for development. In the future, it can be connected with ports such as Hongbai and Ma Niao to form an industrial base-port transportation integration.Several major industrial development zones in modern Lingao are also located on the west bank of the Wenlan River.

For travelers who came to the 17th century, a perfect road system is the basis for rebuilding modern society.The road to modernization is not only conducive to the circulation of materials and personnel, but also greatly increases the regime's control over society.Although China is one of the first countries to establish a nationwide road traffic network, the scope and depth of road extension are still not enough.Taking Hainan as an example, there was only one official post road around the island in the Ming Dynasty, and there were no relatively complete roads in any county.Only some people tread the path made by cattle.Regardless of official roads or ordinary roads and small roads, there are almost no road hardening and drainage facilities. The so-called "three feet of soil without rain, and mud all over with rain" was also applicable in Hainan in the Ming Dynasty.

In comparison, Europe in the same era was not much better. The state of the roads before 1600 was still very bad. The road construction technology handed down from the ancient Roman era has been lost. The potholes on the road surface are filled with firewood bundles, and even this kind of weak and perishable material is used as new roads. roadbed.The idea of ​​modern road construction comes from the Italian Togletta (about 1587). He first mentioned some basic concepts of modern roads in an article, such as roads must be above the level of groundwater; Drainage facilities; use gravel to build a stronger roadbed, and lay a mixture of gravel and mortar at the door-he also pointed out that this kind of road requires long-term maintenance, but the cost is cheaper than traditional Roman-style hard stone roads many.From the 17th century, European road construction technology and road administration entered a stage of rapid development.

The road planning of the traversers is naturally ambitious. The straight-line distance of this planned road is 8 kilometers, and the total length of the route is 12-16 kilometers. It will be constructed according to the Class B standard of the military road. 200 vehicles per day and night.The design car passes the maximum speed of 40 km/h.The width of the entire subgrade is 7 meters, the width of the roadway is 6 meters, and the double lane.

"I have an opinion," Wang Luobin said, "it may be wrong. Are you putting too much energy into surveying now? Are you planning to build a permanent road once and for all? Is this necessary now? Just build a side road and then change it slowly after it goes up. The idea of ​​the executive committee is to build the road to Bairen Beach as soon as possible. Let alone D+5, it won’t be completed in a month, right?

Mei Wan looked at the people around her, but everyone was silent.Bingfeng calculated the approximate engineering quantity and knew that what Wang Luobin said was correct.But here only Mei Wan and Zhuo Tianmin knew a little bit about road and bridge projects. As the leader of the construction team, Mei Wan was very interested in his proposal, and everyone was embarrassed to ask about the construction period.

Seeing that her plan might be rejected, Mei Wan hurriedly explained: "This kind of road is already a bit extravagant for us, but we should plan ahead and lay the foundation first, so as to lay a good foundation for future expansion and reconstruction. .”

"Now at the beginning of the time travel, we have a lot of waste to do. What should be simple and what should be fine, although there is no objective and practical standard, but you, as the actual project managers, don't have to be perfect from a professional point of view. That's obviously not the case. Possibly, neither the technology nor the materials are very complete now. Blind pursuit of perfection is a bit of a hopeless pursuit." Wang Luobin said.

Zhuo Tianmin, who had been keeping silent in the construction team, suddenly said: "I agree with Commissioner Wang's opinion. Road construction is very complicated, considering the slope of the road, the geological structure, the amount of construction, whether bridges are needed, whether tunnels are needed , Design the construction plan according to the investigation situation...but it can be very simple if you want to say it is simple. Especially now it is just a temporary sidewalk. Just determine the starting and ending points of the road, the places that must be reached halfway, and then choose a route according to the terrain to build a simple Dirt roads are fine. According to on-the-spot surveys, the local terrain is not complicated, and there will be no major problems in building access roads in such places, even without strict surveying and mapping.”

Zhuo Tianmin's speech made Mei Wan's face suddenly ugly. Although this man who graduated from a bachelor's degree in mechatronics and has the qualifications of a registered consultant and a construction engineer, although he signed up late and had to take care of his son, he has been in the group for a long time. Keep a low profile, but his professional ability is obvious to all.This made Mei Wan always a little bit taboo.

He originally wanted to show the executive committee a good look through this project, and at the same time establish popularity among the masses-it is an easy way to succeed by building high-quality public buildings to win the favor of the people.

But now, his idea was clearly not favored by Wang Luobin, and was refuted by Zhuo Tianmin on the spot, and he gave an evaluation of "no big picture".

"There are hundreds of people on the beach now, and there are so many materials and machinery. These things must arrive at Bairen Beach as soon as possible! Our task now is to get there, not how to get there. Don't put the cart before the horse." He stood up, "You I will give you an answer to all the requests I put forward tonight, but the plan needs to be redone, until D+6, the convoy must go to Bairen Beach!"

After the meeting, Mei Wan reorganized and revised the plan according to Wang Luobin's request.The new road is a simple road with dirt pavement.Such a road surface is only suitable for the conditions that there are few passing vehicles and the traffic can be stopped in rainy days.Considering that there will not be many vehicles passing on this road, and it is after the Mid-Autumn Festival in the lunar calendar, the rainy season in Lingao is over, and the rain will not have a great impact on driving.

On the second day, the road construction project was finally on the right track. Adhering to the guiding principle of "exploration, design and construction", a road construction team was formed temporarily to replace the original basic labor team that worked noisy and did not work hard.

Because they don't have the hydrological data of the Wenlan River in the 17th century, they don't know what the highest water level in history is.Therefore, when delineating the route, the distance from the river bank is based on the 20-year flood standard in the 10th century plus an additional [-]% margin.

The roadbed adopts the filling type, which is suitable for low and flat areas in plains and hilly areas.In order to reduce the transportation link, it was decided to use roadside ditches to take soil as much as possible, and the borrow pit was only used as a supplement.

For construction, first calculate the width of the road side ditch based on the width of the vehicle, and measure the sideline position of the side ditch according to the width from the side of the roadbed to the outside. Generally, the sideline is marked with lime sprinkling or drawn with a tie rope However, Mei Wan was reluctant to use lime, so she sprinkled plant ash to fix the border instead.

The shallow surface layer of the soil dug out from the side ditch is paddy soil or other soil rich in humus. This kind of soil is not needed by the construction team. It is best to use clay and sandy soil for roadbed construction. These two types of soil are used along the construction site. None are missing and it is very convenient to use.Because the location is along the river, there is a lot of sandy soil, and there are many pebbles and shells mixed in the soil. Directly filling it into the roadbed is not good for the overall strength of the roadbed.Zhuo Tianmin, who was assigned to take the soil, set up a sand and gravel sieve for construction at the soil-borrowing site to screen out stones and shells in the soil.Pebbles can be used as building materials, and shells, and Mei Wan plans to use them to burn lime—but he only knows that shells can be burned, but he doesn't know how to burn them.

The screened soil was used to fill the roadbed.The cross-section of the entire subgrade is stepped, and it is laid in alternate layers with clay and sandy soil, and the soil is compacted twice with a road roller every 20 cm of filling height.This continues to fill the roadbed to 1 meter.Then level the side ditches that have been taken from both sides to facilitate drainage, and the entire roadbed is roughly completed.

By contrast, pavement work is more complicated.Soil roads should be flat and dense, not loose when the weather is dry, and less dusty when driving; when it rains, the water can be drained quickly.These engineers and technicians had never worked on road and bridge projects, so Mei drove a night train at night to review all the textbooks and technical materials she brought with her.

(End of this chapter)