No Regrets In Flourishing Tang

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Li An has enough reasons to believe that under the densely packed mountain ahead, there must be a lot of mineral resources, but it has not yet been discovered. Just like the lime mine, if it is not discovered, it is a very ordinary mountain, and After discovery, it became a lime mine.

Mountain range itself is a treasure, even if there is no special mineral resources, but there are always soil, stones, various trees and flowers growing on the mountain, these all are very important resources, they are very useful.

After the discovery of the lime mine, nearly 100 people in charge of exploration stopped at not all. They also carried out detailed exploration of various resources in the mountains of the vicinity. Of course, there are also mapping tasks, mountain terrain roads, various The distribution of animals and plants must be clarified in detail, because these places are now the land of the Great Tang, and it is not far from Anzhu City. If you do n’t figure it out, you will be negligent.

As a very important transportation hub city in the future of Great Tang, all the conditions around the city must be understood clearly, so as to be aware of it and facilitate unified planning in the future.

Because the population of Anzhu City will definitely increase step by step. If the content of the city is not enough, then the land outside the city can only be developed, and it is not clear how the situation outside the city can be done.

This temporary city wall is not very high, it is similar to the city of Tong Prefecture in the Great Tang, the width of the top is two zhang, this is the narrowest place, part of the wide place is 3 4 feet, that is On the basis of the city wall, it extends a distance to the inside and outside of the city wall. This is also for better defense.

For example, when the enemy ran under the city wall, the soldiers defending the city had to pierce their entire body out of the lookout to see the enemies below, and doing so was very dangerous and could easily be shot by the enemy who attacked the city.

After the construction of the protruding small City Wall section, this situation can be avoided. The defenders can easily see the enemies running under the city wall from the side and shoot from the side, or tell the soldiers in the front, So that they can accurately throw rolling stones and kill the enemies under the city wall.

The part that protrudes outward can be used for defense, and the part that protrudes inward can be used to store various materials of the fortress. After all, the consumption of various materials by the fortress is huge. When facing the threat of the enemy Many materials must be transported from under the city to the city wall, and the best place to place is these small City Wall sections that extend inwards. If these materials are placed on the normal city wall, they will block the road and let the guard The soldiers in the city are difficult to move, and it also has a great impact on the appearance. There are also some large-scale fortification items that can only be used normally in a wide place.

Considering the importance of Anzhu City in the future, Li An also decided to deploy artillery at several city gate locations in this city. It should be enough to deploy 4 gates per city gate. The deployment location is the protruding position on the side of city gate 2 In this position, the space is large enough, and the ammunition of the artillery and various maintenance tools are placed in a good position.

“You see! The road ahead is Yimapingchuan. If the enemy forces commit crimes, they only need to deploy 2 artillery pieces at these 2 positions on the 4nd side, and they can turn the enemy’s bombers upside down, and don’t worry about how many enemies come.”

Li An pointed his finger at the two most suitable locations for artillery deployment and said.

“Minister Li said that these two locations are important locations for the arch guard city gate. As long as they are equipped with artillery, they are enough to block the enemy from being outside the li li and keep the enemy from getting close.”

“With the great prestige of the Great Tang, where will there be enemies who dare to fight against the Great Tang, unless they don’t want to live anymore.”

Everyone is full of confidence, and each and everyone is full of contempt for all possible foreign enemies.

Anzhu City is close to the territory of the Aab Caliphate country, and the north gate is 100 li northwest. It is the border city of the Aab Caliphate country. However, although the Aab Caliphate country is a colossal presence in Central Asia, it is in the Great Tang Empire. In my eyes, fart is not, simply not worth mentioning, the Great Tang Empire can wipe out this seemingly powerful great country with just one finger.

Therefore, in the eyes of the Great Tang civil and military officials, the Aab Caliphate country has no guts to challenge the powerful Great Tang empire, and the remaining small countries have even less power to compete with the Great Tang empire. As for the bandit bandit first-class, the battle strength is It is even weaker, and belongs to the category of unable to withstand a single blow.

Since the enemy did not dare to invade, deploying a powerful artillery force seems to be superfluous, and it is completely unnecessary.

But Li An did n’t think so, because he was about to leave Anzhu City and go to Aden City. Aden City was a piece of land that Great Tang liked, and Aden City belonged to Aab Caliphate for a long period of time. If the Great Tang Empire occupies the city of Aden, will it cause extreme dissatisfaction with the new Abbas dynasty, will they sneak attack Anzhu City in revenge.

Although this is only a kind of probability, it is also unavoidable. At least, before Great Tang won Aden City, Anzhu City’s defense must pay attention to it, and there can be no accidents.

If 4 guns are to be placed in a city gate, then the 5 city gates in Anzhu City require 20 guns, and several defenses are needed for Harbor ’s defense. In addition to the city gate and the harbor, the northwest city wall also has There are 2 door holes, which are used for trains in the future. Because the rails have not been laid, the inside and outside of the door hole are sealed with 2 iron fence doors. This is also a relatively weak part of the city wall, so it is also necessary to deploy heavy soldier protection It is necessary to place 4 artillery pieces. In this way, at least 30 artillery units must be deployed in Anzhu City. If you add mobile firepower reinforcements, you need an entire Artillery Regiment force.

Li Feiyu leads 2 standard Legion, each Legion is more than 3000 people, each equipped with an Artillery Regiment, that is, 50 artillery.

If you leave an Artillery Regiment in Anzhu City, you will lose the support of artillery if you have a Legion, and the battle strength will inevitably be greatly reduced. It is not enough. Li An intends to leave this Legion all.

With the support of the Heavenly Army Brigade and the war chariot brigade, any enemy will not be the opponent, so, why should they lead too many soldiers to Aden City?

In addition, Li An has drawn a lot of manpower from the surrendered pirates in the Malacca area, expanded the troops, and during the battle, let these troops rush to the front as cannon fodder, which can greatly reduce the death rate of the soldiers and horses brought from the capital. In short, as long as the Great Tang soldier motor reaches the level of 1000 people, it is almost invincible.

“Go, let’s go north to see.”

Li An, with his civil and military officials, walked north along the city wall. The feeling of walking on the flat ground is completely different from walking on the city wall. That’s because the vision is completely different, standing on the city wall Walking up, you can take the entire Anzhu City in the entire scene, it doesn’t feel like a normal comfort.

At the gate, the crowd stopped.

First, because this place is special, there are 2 door holes below, which are used for trains in the future, 2 because there is no good road ahead, the city wall not at all is completely completed, and the east city is not far after the door hole The wall has been built, and the wall of the east city wall has not been completed. Not only is the brick not laid on the top, but the height is still quite a bit different. You must lay the ground wall with the same height as the north city wall. Laying female walls and internal walls.

In order to improve the defensive power of the women ’s wall, the material of the women ’s wall is not ordinary bricks, but concrete with higher strength. Even without the effect of steel bars, the structural strength of concrete is higher than that of ordinary bricks, and the flexibility of concrete The sex is also better. When the women ’s wall is built, the thick part can be thicker, and the thin part can also be made thinner, so that the women ’s wall can play a better role.

Generally, the thickness of the female wall is the same, which is made up of a little bit of 2 layers of bricks, and the structure of the concrete female wall is more interesting, just like the city wall, it protrudes a little at every distance. The protruding female wall is thicker than the ordinary female wall, but there is no protruding part. The thickness of the female wall is thinner than the ordinary brick wall, but even the thinner part has stronger strength than the ordinary brick. The female wall is stronger, and the thicker parts are more powerful. All cold weapons are impossible to destroy them. Even if you use the Great Tang ’s artillery weapons, it will take a lot of ammunition to completely destroy them. .

Li An has great confidence in the women ’s wall she designed. Whether it ’s aesthetics or defensive power, the new women ’s wall is much stronger than the old women ’s wall. From a distance outside the city, the new women ’s wall is Very layered.

At the foot of Li An is the doorway, and there are 2 doorways. The two doorways are not far apart. The width of each doorway is only 2 steps more than the width of the train. The height is one person higher than the top of the train to ensure that The train is absolutely safe.

The reason for choosing to build two relatively small door openings instead of building a two-times larger door opening is naturally due to safety considerations.

Opening a hole in the city wall itself will reduce the defensive power of the city wall. If both lanes are placed in a doorway, the doorway will be too wide, and the arch at the top will be too wide to support the city wall. The strength of the masonry will be reduced, and over time, under the action of stress, it is very likely that an accident of collapse will occur, and the two Small Sect holes are different, because the relatively narrower, the supporting force of the arch structure is more Larger, less prone to collapse accidents, and the amount of engineering is relatively small.

In addition, 10000 one hole was captured by the enemy, a large door hole is more conducive to the entry of the enemy’s heavy equipment, and the effect of the two Small Sect holes is much worse, and it is more likely to be blocked.

Therefore, no matter what aspect is considered, it is better to build 2 relatively independent door openings than to construct a single door opening.

The trains of later generations also follow this principle. When encountering the mountain, the tunnels dug can only be used for the train to pass through individually, and the trains to and from the train must not go through the tunnel. Sometimes the distance between the two tunnels is still relatively far, a few kilometers apart Are normal.

This is because if the width is to be doubled, the height must be doubled accordingly, so as to ensure that the semicircle above the head has sufficient width to resolve the stress and protect the tunnel from collapse, but the width and height can be increased by one If it is doubled, the cross-sectional area will be increased by 4 times, that is to say, the earth and stone excavation of the tunnel will be increased by 4 times. In this way, the amount of engineering is doubled than that of digging two small tunnels alone, and the fool will choose to dig a large What about?

Another point is that the later generations used tunneling machines today, which is a cylindrical machine. The head of the machine is equipped with a lot of hard blades, which can excavate the tunnel while traveling. The efficiency is much higher than that of manual excavation. However, it is very difficult to build a large shield machine, and the technical requirements are very high. It is difficult to build a shield machine that can dig a single train track. If you want to build a shield machine with double diameter, it is difficult It is undesirable to increase it many times, as the cost and other aspects will increase.

At the current technical level of the Great Tang Empire, it is impossible to build a shield machine. It takes manpower to dig a tunnel. Whether manpower or machinery is used, the less earthwork is, the better. Two separate small tunnels will also be dug.

There is a small staircase next to the doorway. Li An and Yu Xiawu officials walked down the stairs and came to the doorway.

Because the iron fence is locked, no one can enter or exit the city through the doorway. However, the defensive power of the iron fence is very limited after all, so there are iron fences in both the inside and outside. In addition, the side of the city near the doorway There is also a 2-Layer small building, which is enough to house 2-30 people. In the future, after opening here, it will naturally need to be guarded day and night. The doorway must be guarded inside and outside the city, and there must be guards above the city wall. To ensure safety, at least to prevent someone from entering the doorway, causing certain risks.

The door opening will be opened with the opening of the railroad track for at most one or two years, when the time comes The iron fence will be removed, and there will be cars traveling near the door opening. As a transportation hub, in the future, there will be many trains passing through this door opening And, it will be very frequent.

After staying near the 2 gates for a while, Li An and Yu Xiawu officials not at all hurried back to the city gate, but walked south along the inner city wall, they had to walk around the city wall once, The entire city wall will be inspected again.

However, considering that the distance of the city wall is a little too far a week, and the officials are also quite old, so naturally, they cannot walk on foot all the time, and horse riding has become a very good choice. OK, so the effect is very good.

Because there is a river nearby that flows into the sea through Anzhu City, there are rivers in Anzhu City, and when the river enters Anzhu City, there must be a passage. The city wall will block the water flow, so there is a river An arched culvert should be built at the passing position. In order to ensure the firmness of the city wall, three culverts were built in the larger river. Each culvert is not very large. There is an iron fence and a wooden fence in the middle of the culvert. Prevent people and animals from entering and leaving the city.