After sending off the envoys, Wang Qi's workload increased. He had no choice but to put down most of the slime mold experiments. Anyway, the early experimental results had to wait for the five experimental subjects to change their bodies for several rounds. Xun found something to do.
Mainly water.
Water is the source of life and the basis for the existence of industry. Machine cooling, turning, cleaning, chemical residue treatment, etc. are all inseparable from water.
The water resources in the Dark Land block have not changed much since they took off. The water in the underground city, Phoenix City, and South Town all comes from the groundwater brought by the condensation effect of the Ice Forest.
The source of groundwater in the new city is from the south. Now that the water source is cut off, we have to rely on groundwater storage and a small amount of mountain condensation, as well as a little bit of replenishment from a small area of artificial ice forest, and wait until the water pipe project connecting the cooling tower in the north center is completed and connected to the center. Reservoir, or after takeoff, find the leaking point on the section and seal it.
The Fenggu plate is relatively rich in water resources. Although the runoff has decreased after the plate is dislocated, the stock of Elte Lake and the green artificial lake is large enough. It will not be a problem to build a dam near the western edge to meet self-use.
The Black Mountain area in the southern part of this plate is relatively short of water. The ice trees transplanted to the Black Mountain for previous disaster relief were directly transplanted and re-transplanted to build a new small reservoir. It should be self-sufficient and ensure continuous surface streams.
The problem in the Pangxun sector is more serious.
First, make a comparison of population distribution and area.
All the cities in the Dark Land tile are concentrated in a small area. Underground City, Phoenix City, New Elte, Firefly, New City, and South Town, including the area surrounded by them, are only 2,000 square kilometers. Less than, the total population is about 200,000.
The cities in the Fenggu plate are relatively scattered, including Xiaoshancheng, Fenggu, Green, Erte, Obert, Dongshandao, Lukou, Xilukou, Heishui, and Heishan. They occupy about 70% of the plate area and have a total population of 450,000. Or so, but the water reserves per capita are more than double that of the Dark Land.
The Pangxun plate is the river plate of the Luna River. The Luna River passes through the middle and does not become the plate boundary.
In addition to Pangxun in the north and south, there are four riverside cities in the upper and lower reaches of this plateau, almost all of which have a population of less than 50,000. In addition, in the non-river area, there are also small lake area cities such as Hongye Lake and resource-based cities such as Nitan City. It is estimated that there are at least one million people in an area of more than 10,000 square kilometers. In fact, because the eastern war zone has been invaded by demons, and there are still a large number of refugees that cannot be counted, the number will only be larger.
But if we talk about water sources, it’s more of a mess.
As for the Emerald River, it is a tributary of certain importance in the middle and lower reaches of the Luna River. Its natural river channel is narrow and the flow rate is fast. The actual flow rate is quite large. The total annual flow rate is 10 cubic kilometers, which is one More than 10 billion cubic meters. Just because the water first flows into the swamp area and then flows into the Luna River, it is difficult to estimate the flow contribution to the Luna River.
Unfortunately, the source of the Emerald River is in the northeast outside the city of Elte, and part of the swamp area it flows through is on another plate, not adjacent to the Pangxun plate.
After the Pangxun Plate was disconnected, it was no longer possible to rely on water from upstream. The remaining internal water sources were only the Zishui River from Hongye Lake to Luna River, and a small river in the south. The combined flow of the two rivers is not as much as that of the Emerald River. After the plate rupture, the flow of the southern tributaries was reduced by half, making it even more unsustainable.
Needless to say about the future, there is already a local water shortage, and it is completely dependent on a lake with an average water depth of less than two meters left after the Luna River leaked.
The channel of the Luna River is huge, three to four kilometers in the Pangxun section, and the swamp confluence area is even larger.
However, in the process of floating islands, a large water body is not an advantage. Such a shallow and large area of water can only bring about rapid evaporation. If the rainfall in the future cannot be guaranteed, it will become a beach within two months at most, and the rise As the atmosphere above becomes thinner, the amount of evaporation will increase.
In fact, if the entire Pangxun plate is owned by itself, then the combined annual flow of the two tributaries of 300 million cubic meters will be distributed to one million people, leaving an average of 0.8 cubic meters per person per day, which is enough.
The problem is that only Pang Xun from the north and south has the intention to naturalize, and there are more people who are not under control.
Pang Xun's position can only use the water of Zishui River.
The water of Zishui River is not purple, but there is a naturally purple ore-bearing pebble in the river, which looks like it has color. This stone has also been investigated, but its development value is limited. The main component is amethyst quartz, which contains trace amounts of lithium. As a magic material, it is also a particularly low-level consumable.
The annual flow of this river has also decreased compared to before the earth cracked, but the extent is smaller. After the negotiation, an exploration team was sent to inspect the estuary on the spot... There is also a city on this estuary, with a population of about 60,000 to 70,000, and Hongye Lake. Planting and fishing are also mainly developed.
The runoff volume measured on the spot is 130 million cubic meters, which is not a small amount. It will be enough with reasonable planning.
There is a lack of large-scale equipment transportation capacity and not many planning tools available.
Wang Qi personally prefers the choice between underground reservoirs and riverbed reservoirs, but he doesn’t know if he can find a suitable underground lake.
The so-called underground reservoir uses the space eroded by natural groundwater like underground cities to store water. It has the same advantages and disadvantages, that is, there is no light.
Without light, there will be no photosynthetic microorganisms, and without underlying energy, larger aquatic animals cannot be fed. Therefore, the water body will be cleaner, and at the same time, a food source will be completely cut off. As for the so-called cave aquatic animals, those that can only be eaten in half a year cannot meet the needs of breeding.
Considering the huge runoff of the Luna River, if there is such a water storage layer nearby, it is likely that it has not dried up yet and is a natural reservoir. If the area is large enough, there is no need to rush to build a reservoir in a short time.
Converting the river bed into a reservoir can retain a certain scale of fishery, but the floating height of the floating islands in the future is currently unknown, and there is still a certain risk. If a certain altitude is reached, too much evaporation may lead to the gradual accumulation of salinity.
Of course, if the altitude is really high, then you have to consider people's life and death first, and you won't be able to care about the water issue at the first time.
In order to cope with this possible change, Wang Qi decided to focus on searching for underground lakes. It would be enough to dig a little on the surface river bed to create some ponds to raise fish.
As cities awaiting naturalization, the cooperation between North and South Pang Xun is much better than that of the two idiots on the Fenggu plate.
Wang Qi's proposal was sent over, and within a few days many people were organized in the two places to look for the entrance to the underground lake.
There are two ways to find groundwater.
Drill a well.
Normal well drilling does not actually penetrate into the underground lake, but into the aquifer, and the well water is obtained through the infiltration effect of the rock and soil layers.
The structure of the underground lake is completely different from that of the aquifer. It is dominated by rock mass structure and there is basically no soil.
Drilling a well requires thoroughly drilling through the rock formation, but there will be water above the rock formation, making construction difficult. Without the corresponding equipment, it will rely more on magic.
The second way is to find a cave in limestone terrain.
Water erosion has a poor effect on granite, basalt, etc., but limestone has a certain solubility, so it will be hollowed out relatively quickly. The evolution speed can be measured in ten thousand years. This length of time can be called rapid for geological evolution.
Therefore, large natural cavities are more likely to appear in limestone areas, and experienced people can easily find groundwater in such areas.
However, you will most likely still have to dig a hole after you find it.
What Wang Qi can do here is to make suggestions, and then ask Akeem to plant trees in two cities, start storing nutrients for sugar production, and process some domestic sewage.
Hmm... let's approve another amount of money. In addition to subsidizing water affairs, we can start defense work in advance and stabilize the labor force.
