Eleven months have passed since the seeds of the giant sacred tree were planted and the demons escorted the captives to escape from the north. There are only 9 months left before the scheduled 20-month nutrition savings period.
The actual progress of the entire project was faster than expected last month.
This is not because of the labor aspect, but because the water storage height of the reservoir is a bit higher than expected, and related projects may need to be completed in a hurry.
In addition to serving as a buoyancy source for megacities in the future, the central reservoir itself will also be a key water source for all surrounding cities. However, the water body is too large and its water distribution pattern is not very normal.
Reservoirs are mainly connected to water sources in various cities, rather than being uniformly processed and distributed through pipelines.
After the water surface of the reservoir reaches a predetermined height, it will overflow from several artificially rested natural terrains, forming single waterfalls or multi-step waterfalls in several directions, forming small lakes and connecting to the underground water systems of various cities. If there is no natural connection, , just rely on magic.
There is such a plan because over time, building sinking has been observed. This is also to save the ground level of each city. The effect is very limited. The frequency of road construction and house reconstruction will not change much in a few decades.
The key point is laziness in the amount of work. The terrain from the reservoir to various cities, especially to Phoenix City and Nanzhen, is relatively steep. It is too dangerous to lay artificial pipelines. Therefore, even the pipelines for the cooling tower project are from the central airport. Turn around and enter the Ice Forest.
With the current scale of construction power, it would be better not to do such a project, and it would be easier to arrange the construction schedule in other aspects.
After changing the water supply method, the construction site only has two parts: the drainage channel above the waterfall and the artificial lake.
However, it is an artificial lake, and it cannot be compared with the lake in the Green Section of the Emerald River, which took several years of work by mages to form a large scale. It can only be regarded as a large pond at most.
The largest of the ponds is the lagoon in the northeast corner of the reservoir. A water plant will be built at this point to provide water to New Petters, Firefly City, and Black Forest College.
The preset total area of the pool is 0.1 square kilometers, which is 100,000 square meters. The pool width is 125 meters. The total project width is 180 meters and the length is 840 meters. It is divided into two pools, one large and two small. The large one is 500 meters long and is directly impacted by the water coming from above. It is divided into deep water section and shallow water section; the two small ones are both 150 meters long and are divided into stable pool and still pool.
...It is still water, not clean water. Yes, the main task of this project is to turn the water coming from above into static water and complete preliminary precipitation, so that the water plant itself can be made smaller.
There is also a line that allows water from above to pass through the turbine used for hydropower generation, which can effectively eliminate part of the gravitational potential energy. It's a pity that the kingdom has not had enough free people to study the hydraulic turbine-related system until now... Mainly because there are few people in the land and there are really few spots with power generation capabilities, so there is no need to spend a lot of effort to grab that bit of energy.
In order to reduce the amount of work, the pool is dug and piled at the same time. The overall digging depth is 3 meters. The deep water area of the large pool requires a depth of more than 20 meters, and a four-meter-high artificial dam is filled. The maximum water storage capacity is Between 5 and 6 meters.
The total earthwork is about 400,000 cubic meters, and 80,000 cubic meters of concrete will be used for anti-seepage projects.
The dark place is a large piece of cooled lava. The earthmoving work should actually be called masonry work. The existing equipment is still lacking, and with improvised machines to drive so many rocks, I don’t know how many drivers will become deaf.
Therefore, digging a pit mainly relies on magic strikes to crack the engineering surface, and then the excavator can be used like digging surface coal.
In terms of groundwater access, in this direction it is mainly used as a means of controlling water levels.
The projects in Phoenix City and Xincheng are different.
The water in Phoenix City is mainly extracted from the ground by the Wangting Tree and supplied to the whole city and trees. There is no need for a water plant here. Just ensure that there are cracks in the incoming water tank and the groundwater is connected. Even the connection work does not require manual labor. Wang Qi directly operates the root system of the Wangting Tree. Just make a hole underneath.
Before the disaster, Xincheng had been using surface water formed by overflowing groundwater. Water leakage occurred after the plate cracked. Later, the edge of the plate grew again and was blocked, but surface water did not form again, and only a small underground water network remained.
The change in the water environment of the new city was one of the important reasons for the central reservoir planning. After the edge of the plate was blocked, the reservoir lost its urgency. It was not until Wang Qi got the seeds of the giant structure that he started to artificially accelerate the formation of the reservoir area.
This history of hydrological changes means that the Xincheng Water Plant itself has equipment and pipelines to utilize both local surface water and underground water. Therefore, the incoming water only needs to be introduced into the original lake area, and there are no other projects.
Eleven months have passed, and the water resource utilization projects in the Phoenix and Xincheng sections have been completed, and the gravel work in the Northeast Water Plant has just been completed and mechanical operations have been started.
The slowest is Nanzhen.
South Town itself is relatively short of water. In the earliest days, this spot was just a savage tribe... It seems to be the ancestor of Sharp Blade, a tribe with only a few hundred people... maybe not even 300 people. Their water source is just dew water from the rock wall. , forming a small pool without even a mountain.
Later, outpost trees were planted, and there was some water underground, but it was just enough to maintain a scale of 2,000 people.
The possible increase in the size of Nanzhen is due to the west line project of the central cooling tower, but it only adds more condensed water.
Now if you want to drink water from the reservoir area east of Nanzhen, there is a major issue that must be considered - Nanzhen itself has a mining industry, and it is an underground mine. In fact, the scale of water supply in South Town has not been improved, because there is concern that the root system of the outpost tree will overgrow, which may cause serious accidents in the mine.
Because there are mines, the groundwater here cannot be filled casually, as it may flood the mines.
The Nanzhen water diversion project has been revised several times during this period, but it was finally decided to use pipelines.
As mentioned just now, the method of water diversion in the reservoir area was originally designed to avoid the difficulties of pipeline engineering.
But having said that, the height of the mountain is actually relatively limited. The place where the water diversion point is built is a relatively low terrain, only about fifty stories high, so it is not completely insurmountable.
It's just that when building a pipeline on a mountain with an angle of about 75 degrees from the ground level, even if you use a magician, it is difficult to build it from the ground up. After all, a section of pipe weighs several tons. Even if you use magic to make it The docking operation that is off the ground and floating in the air still requires someone to operate it.
Therefore, this part needs to wait until the top ring roadway reaches a certain degree of completion and the crane can reach the construction site before it can be unfolded.
...In fact, now that there is plastic, it seems that using a water pump and plastic water pipes will work.
However, plastic pipes can only respond to emergencies. With a potential energy difference of more than 100 meters, plastic water pipes cannot withstand a few days. The faucet cannot be turned off from below, otherwise the water hammer will cause the pipe to burst on the spot.
Moreover, once a megacity develops in the reservoir area, the surrounding satellite cities will inevitably experience a population explosion, and cast iron water pipes will indeed be needed.
Cast iron water pipes were developed in the central cooling tower project. Large-scale centrifugal casting was used for the first time. The molten iron was poured into a rotating cylinder, shaken evenly by centrifugal motion, cooled slightly, and quickly used clamps while it was still incandescent. Take it out and do heat treatment such as spraying.
Centrifugal casting itself is not a new technology, because automobile factories have parts that require centrifugal casting when making cars. Manually making centrifugal casting foundry parts was a skill possessed by a few blacksmiths of the second generation of the Night Clan's disaster. At that time, it was mainly used to make city gate gears in the sanctuary, and it was naturally inherited from the deceased witnesses of the disaster.
There is a problem with cast iron water pipes. Once the water supply is stopped and restarted after a period of use, the rust content will be so large that it is visible to the naked eye. The quality of the water supply is completely incomparable to the Wangting tree and the outpost tree.
The ability of the reservoir to supply water to the outside depends on changes in the moisture content of the air. Even if there is magic, there is no way to control this on a large scale. The intermittent water flow will inevitably lead to increased corrosion of the cast iron pipes. The construction was cheap, and it will need to be repaired and replaced later. In this regard It is not as good as the other three waterfall water diversion points.
Anyway, let's use it first. When the megacity reaches a certain scale, we can consider directly using the sacred tree organ to divert some water to the direction of South Town.
Attribute point philanthropist
