Zhao Bing, who woke up the next day, found that everyone was strange when they saw him, and Wu Xi and Chen Shu had even red eyes. He thought about how he had drunk too much last night, so why did he mobilize so much? Did he say something he shouldn't say? But after thinking for a while, he really drank so much that he couldn't remember anything. He called Wang De and asked, but he was hesitant and said that he pointed at the moon and cursed for a long time.

The moon was also considered a god in ancient China, especially among the people, and it seemed like a traitor to scold it himself. But he knew that the moon was just a lifeless planet. Not to mention that even a god really existed, I would probably not live for a long time. It was a big deal to scold it. If he was unhappy, he even scolded the sun.

Of course, the emperor would feel uncomfortable when drunk. Zhao Bing was inevitably a little listless and had no appetite at the "breakfast party", but it seemed to be a big deal in the eyes of everyone. He even asked whether to end the tour of the north to Beijing. He was inexplicably dismissed and naturally refused, but he still took a day off in Pingjiang. When he went on tour, Wu Xi and Chen Shu went to Fengqiao Temple outside the city to burn incense and pray for blessings.

On August 18, the five-day trip was on the road again. After a short stop in Changzhou, he continued to go north. The canal will also enter the Yangtze River from Runzhou and then enter Guhangou and enter the Huaidong area. When he arrived at the Guazhou Ferry, the fleet had to lower sails and moor. Due to Chinese geographical reasons, the water level of the Yangtze River was higher than that of the canal, which formed a water level difference, resulting in difficulty in sailing. In order to facilitate shipping, the ancients built weirs on the section of the artificial canal, and then a lock appeared. They also had to queue up to pass the lock.

In the early days, when a ship crossed the weir, it was necessary to use a wheel or a cattle, or even a human traction. Although this method was simple and easy to use, it was inefficient and also suffered a lot of damage to the boat. The ship was too much re-drunk, which was far from adapting to the rapid development of the transportation industry in the Song Dynasty. It was not until the Song Dynasty that the re-drunk and the O-gate were created on the basis of using a single gate to control water use in the Tang Dynasty.

The ship locks instead of weirs, which not only overcome the limitations on the canal terrain, reduce water consumption, adjust a certain water level difference, pass the ship horizontally, and reduce the effort of refuting and refusing, greatly improving the canal transportation capacity. Although Zhao Bing studied ship manufacturing in his previous life, he also had relevant courses on shipping. At this time, he stood on the deck and waited to cross the river, and also examined this pioneering project in the history of shipping.

At this time, the lock is composed of two upper and lower gates and gate chambers. The length of the gate chamber is generally about 100 meters, and the gates are mostly stacked beams. The work of the lock is to use the principle of "water rises and ships rise" and "ships fall with the water". When the ship comes upstream, the gate is opened to make the gate chamber flush with the water level upstream, and the incoming ship is leveled into the gate chamber. Then the upper gate is closed, the lower gate is pulled, and the water level of the gate chamber is leveled to the downstream. When the ship comes downstream, the gate passes the gate chamber, the opposite is true.

"Zhou Si Envoy, how big can the boats can be passed through the Jiangkou ship lock now!" In order to manage the ship locks on the canal, the court set up the Ao Gate Officer. At this time, he drove the fleet across the river. The officer Zhou Liang boarded the boat to welcome Feng, and Zhao Bing also took the opportunity to call him to ask about his related matters.

"Report to Your Majesty, the old Dharma boat carries only 300 stones of rice. The gate was originally a 400 stone ship. The loads were carried by a lot, with the official ship reaching 700 stones, and the private ship reaching more than 800 sacs and two stones of capsules. The court issued an order to renovate the canal and increase the carrying capacity. The Ministry of Works and the Ministry of Water Affairs jointly transformed the gate. Now a large ship that can pass through thousands of stones!" Zhou Liang felt that it was a great honor to be able to board the imperial boat, and he was even more trembling when summoned by His Majesty, and he couldn't help but report nervously.

"The imperial boat can carry a thousand five hundred hu, but it is still difficult to pass through the river mouth!" Zhao Bing asked after hearing this.

"Your Majesty... can also be passed by, it's just a little trouble!" Zhou Liang replied in a trembling voice when he saw Your Majesty seemingly unhappy.

"Oh, don't be nervous, I don't mean to blame me." The Aozha Secretary was just a small official who had just entered the seventh rank. If it weren't for a chance, he wouldn't have the chance to meet the saint in his life. Seeing that although he tried his best to remain calm, he still had sweat on his forehead. When he heard his voice trembling, Zhao Bing immediately realized that his attitude scared him and quickly calmed down and comforted him.

"Your Majesty, I learned that the driver was going to take a boat to the north and patrol the canal. I knew that the imperial boat loaded more than a thousand stones, which was deeper than the flat-bottomed canal. So I urgently built a temporary wooden gate 200 steps south of the crossing river lock to narrow the river channel and raise the water level!" Zhou Liang breathed a sigh of relief and calmed down his mood and replied.

"This method is very clever. By artificially creating narrow rivers, increasing the flow rate, washing away the silt in the river channel, making the channel deeper. As long as the temporary gate is closed, it will play the role of a secondary lock, so that large boats can pass through!" Zhao Bing praised after hearing this.

Zhao Bing knew that artificially manufactured Na River was originally used for waterway dredging and siege cities. During the Northern Song Dynasty, because Kaifeng's material transportation relied on canals, the court attached great importance to the dredging work of the Bian River. The first dredging method adopted was to directly carry out manual cleaning, but the project volume was very large, and tens of thousands of servants were driven to carry out the operation every year, which consumed a lot of manpower and financial resources.

Another technical measure to deal with the siltation of the Bian River is the narrow river project. The so-called silence is to use wooden piles and wooden boards as the banking narrow river body, which narrows the river channel, increases the speed of the water flow, and makes the canal conducive to boating. At the same time, the silt is taken away more, slowing down the siltation speed, and has the advantages of being simple and easy to use, and can be used locally, making it convenient and flexible.

The ship locks in the Song Dynasty were very advanced at that time, and in Zhao Bing's view, it already had the prototype of a contemporary ship lock. On this basis, a secondary ship lock appeared. Its function was equivalent to the use of two ship locks together, which was easy to adjust and saved water. It was often built on river sections with steep slopes or large drops, which can be regarded as a further development of ship lock technology.

"Your Majesty is also very familiar with this!" Zhou Liang was delighted when he heard this. What he feared most was Shangguan, who did not know how to dispatch gates and ensure navigation, but he had to pretend to understand and blindly ask himself to speed up the navigation speed and increase the tonnage of navigation ships regardless of reality. He also threatened to pass by forcibly as demoted and dismissed. In such a situation, he didn't know how much talk would be wasted to explain, and the emperor could even decide his life and death. If he blamed him for this, he would have no place to argue.

"I just understand a little bit of the fur, but I can't say I'm familiar with it or understand it." Zhao Bing asked again modestly, "This solves the problem of large ships passing through the estuary, but it is probably difficult to get dry winter and spring. Now, even if the water volume is still abundant, should I use Ozha to replenish water if I want to pass quickly?"

"Your Majesty is not only aware of the superficiality, but is proficient!" Zhou Liang was surprised this time. Although the emperor only said a few words, it was a lingo that was not something that outsiders could understand. "Your Majesty, a river bank was built in the canal a hundred steps away from the estuary. It was two hundred feet long, uneven in width, and more than fifty feet wide, and more than ten feet narrow, about five feet deep, and it could be filled into the canal, but the return water was slow, and it took about one day to complete the entire fleet!"

Zhao Bing understood that after creating the lock, it was obviously more advantageous than the weirs in use, but every time the ship passed, the water loss was still unavoidable, especially for the water-scarce river section, the supplementary supply of water sources is still a big problem, which requires certain engineering measures to reduce the loss of water volume. The later Aozhan was created to solve this problem.

The so-called Ao Gate is a water storage tank built next to the gate, also known as the Ao Gate. When using it, the water released from the gate chamber is stored in the water. When the water in the transport channel is insufficient, the water in the water will be transported back to the gate chamber with a water truck. "Well, if it is dry, this amount of water is still not enough to ensure the rapid passage of the canal!" Zhao Bing picked up the telescope and looked in the direction indicated. Sure enough, a water gate was built in the west of the canal, intercepting the upstream water.

"Your Majesty, it's not just difficult to guarantee. The gate will be closed in winter and spring. Only the imperial ships can pass through the gate. Merchant ships and civilian ships will basically be cut off!" Zhou Liang replied.

"Is there any way to go north through the gate during the dry period? Can it be improved by increasing the return rate of the gate?" Zhao Bing nodded, pondered for a moment and asked again.

"Your Majesty said very much. At present, it can only be improved by increasing the return water volume. However, the water truck has a limited speed of water replenishment, and it has not been solved for more than a hundred years!" Zhou Liang replied with a sigh.

"This problem must be solved!" Zhao Bing thought about it and said, "The Tartars often choose to go south when the horses are fat and strong after the autumn. Our army relies on the power of the canal. Once the war is serious, the shortage of materials stored in the front must be supplemented. If the canal is cut off, it will be extremely unfavorable for our war!"

"Your Majesty said very well, but this is extremely difficult, and it cannot be solved by a humble position!" Zhou Liang felt bitter when he heard this. He was not a god. He had the magical power to move mountains and seas, and he could not even throw him into the river.

"Haha, don't worry, I won't blame you for this, this is not what you can do, but if I come up with a solution to the speed of return water, you can't make any mistakes because of unfavorable dispatch!" Zhao Bing smiled at his embarrassed look.

"Thank you for your understanding of your humble duties. If you have a good plan to return to the water, if your humble duties mislead your majesty's major affairs, you will chop off your head and serve it!" Zhou Liangyan said.
Chapter completed!