At this time, Jingsi said: "Do you want to see the electrical equipment? You guys take a rest first, and I'll ask Dong Gong to go take a look with you."
Yonghan and Fu Shuo were having a rest at the hotel nearby. Jing Si asked them to contact Dong Gong when they had time.
They rested for a long time, and Yonghan said, "Mr. Dong, drive over and have a look."
"Okay. The car is at the door." Dong Gong said.
Relatively loose rock masses such as sandstone, silty mudstone, and gritstone deposited on the surface of the zone are continuously weathered and eroded by the sun and wind, turning into a large amount of clastic material. Debris, large and small, disintegrated from the mountain and accumulated at the foot of the mountain. It was washed away by water to the farther foothills, forming a large area of floodplain. During the dry season, the fine sand and dust in the detrital materials on the flood plains are blown into the sky by strong winds, and the dust is blown to areas thousands of miles away; those fine sands are carried nearby by the wind, forming deserts . Gravel with relatively large particle sizes was left in place, forming the Gobi Desert.
They found the door to the underground passage and walked for a while.
"This is desert soil. It is different from arid soil." Dong Gong said.
"What are the characteristics of desert soil?" Yonghan asked.
"It is characterized by three transformations and one accumulation: paint leather, cracking, gravelization and carbonate surface polymerization, as well as the accumulation of easily soluble salts in gypsum."
While walking down, Dong Gong said: "The layers of the soil profile are relatively obvious. From top to bottom, they are: the surface layer where lime accumulates, the middle layer where gypsum accumulates, and the bottom layer where soluble salts accumulate. There is no obvious humus layer." The desert surface has undergone obvious processes of paint skinning and cracking, forming a unique desert crust. Due to scarce precipitation, the movement of various elements in the soil is extremely weak, calcium carbonate accumulates on the surface, and soluble salts do not leach deeply.
"You know a lot, are you studying geology?" Yonghan asked.
"No, I know a little bit about geology, botany, and electrician."
Yonghan asked: "What are the characteristics of arid soil?"
Dong Gongyou went on to say: "Arid soils mainly include: brown zestic soil and gray zestic soil. Brown zestic soil: It is a zonal soil developed under temperate desert steppe vegetation. It is mainly distributed in the temperate desert edge areas of various continents, including Eurasia. The continental desert steppe zone has the largest area. Gray soil: It is a zonal soil developed under warm temperate desert steppe vegetation. It is mainly distributed in the sandy areas of the hinterland of Mexico in North America, the sandy areas of northern Argentina in South America, and the northernmost deserts of Africa. In Eurasia The former Soviet Union's Central Asia had the largest area. Formation characteristics: There are two basic soil formation processes, the humus accumulation process and the calcification process. Physical weathering is the main factor, and sometimes there is accumulation of carbonate soluble salts on the surface or underground. .”
"The common characteristics of arid soils are: due to relatively arid climate conditions, the soil is weakly leached, there are obvious calcium accumulation layers in the lower part of the soil, and the exchangeable salt base is saturated. The humus content gradually decreases from the surface layer downwards. The reaction is neutral to basic.”
Go to the wire encapsulation pipe below and see that the circuit pipe is squeezed.
Yonghan said: "Is there an earthquake here?"
Dong Gong said: "There was a slight vibration. I don't know what it was."
Yonghan said: "Did the earthquake cause the structure of the underground walkway to deform?"
Dong Gong said: "But this is a very localized shock. We have asked the testing department and it is not a large-scale one."
Yonghan said: "Is there water flowing underground? Man-made destruction?"
Dong Gong said: "I don't know anymore. I'll install an ultrasonic detector to measure it. There's also an X-ray machine."
The ultrasonic detector emits and receives ultrasonic waves to detect the velocity of the internal fluid. If there is water flow, the velocity can be detected. If there is no water flow, the indication value is zero. As a result, a small amount of water flow was measured nearby, but not enough to impact the pipe.
X-rays can be used for perspective and tomographic examination. No special traces were detected nearby.
Dong Gong said: "There is no air conditioning here, and the temperature is more than ten degrees underground. There is a main transformer room nearby, the temperature is relatively high, and there is air conditioning. The air conditioning ventilation pipe extends out of the ground, and there is a wind and sand filter. The ventilation pipe may be more than 20 degrees Celsius. "
“Further forward are wind and solar farms.”
Yonghan said: "The effect of using wind and solar power here is not bad, right? Tropical and subtropical deserts are mainly distributed in the subtropical high pressure zone and are rich in solar energy."
The world's desert area is about 33.7 million square kilometers, accounting for nearly 25% of the world's total land area. The solar energy that can be obtained per square meter per year in the desert area of Country C is about 5000-6000MJ. The annual solar energy obtained from the desert area of 400,000 square kilometers Approximately equivalent to 70 billion tons of standard coal.
"The underground structures here are solar power generation devices, transformers, transmission lines and pipelines, and backup wires from nearby cities. The shortest wires are in the section of pipeline from the solar power generation panels to Oasis City," said Dong Gong.
Yonghan said: "What kind of liquid did you detect with the X-ray instrument just now?"
"Okay, I'll peel this part off." Dong Gong took a shovel and dug out a gelatinous liquid from behind the wall.
Yonghan said: "What is this?"
Dong Gong said: "Be careful, I don't know if it's poisonous or not. Put it in a jar."
They took the gelatinous liquid back to the laboratory for analysis. Wait for the results from the instrument.
"How long will this take?" Yonghan asked.
"Half a day. Most of the time, we are waiting." Jingsi said.
"Yeah, it's been a long wait." Yonghan looked at the window and saw a four-leaf clover. Only one clover in ten thousand has four leaves. Its flower language is called clover.
Yonghan said: "What is this? Is it cultivated?"
Jingsi said: "No, I picked it up from the breeding forest. It was not deliberately cultivated."
Yonghan said: "After all, you have found your luck."
Jingsi said: "Yes. There is no need to deliberately pursue it. Do what you need to do, and then most of the time you just wait."
The test results are out. The main component is toxic protein. It can be inferred that it is the poison of some kind of animal. It is a liquid secreted from the venom glands of animals. Its main component is toxic proteins, accounting for about 90% to 95% of the dry weight. There are about twenty kinds of enzymes and toxins. It also contains some small molecule peptides, amino acids, carbohydrates, lipids, nucleosides, biogenic amines and metal ions.
Yonghan and Dong Gong drove to the transformer room again to have a look. There is nothing abnormal in the room and the transformer is working normally. Looking along the ventilation duct, there seems to be something. Dong Gong climbed in and took a look. There were several very large eggs!
The electrical conduits are underground and the temperature is 15 degrees. The ventilation duct temperature is 23 degrees Celsius. What kind of egg is this? Ostrich egg? Dinosaur Eggs? Snake eggs?
Dong Gong thought about it. The incubation temperature of snake eggs is generally more than 20 degrees. If the incubation temperature of snake eggs is lower than 20 degrees Celsius, the incubation time will be extended and the eggs may not hatch; if the incubation temperature is higher than 27 degrees and the humidity is lower than 40%, the snake eggs will become shriveled and hard. The ventilation duct temperature is consistent with the incubation temperature of snake eggs.
Yonghan said: "Maybe some giant pythons."
Dong Gong said: "I have seen similar eggs in the mines 20 kilometers to the west. How did these animals come here?"
Dong Gong said: "Recent drilling errors in the liquid mine caused a fault at the bottom of the underground water layer."
Yonghan said: "Then these snakes went to find water near the oasis city because there was no water?"
Water-seeking plants have very deep rhizomes that can find water sources deep underground and pump water to the surface like a pump. Trees can fix sand and soil, and water-seeking plants can provide water sources for trees.
"Snakes find water close to the ground, so they come here in droves."
Yonghan went to the place where the cable was broken, put on insulating gloves, and said, "I still have to check whether there is a break in the middle."
Dong Gong said: "Have you measured whether there is electricity here? The electricity is provided by the solar panels at the power generation site."
Yonghan said: "There is no electricity. It seems there is a broken circuit in the middle."
Dong Gong said: "Then how to determine the specific location?"
Yonghan said: "The short pulse echo ranging method uses this instrument to transmit a pulse and record the time. When the pulse reaches the break position, it will be reflected back due to the large impedance. The time of the transmitted waveform can be measured. According to the difference between the two times, Value, multiplied by the propagation speed of the wave, divided by 2, gets the distance from the break position to here."
The pulse width used is 200
s, the pulse amplitude is 10 V. The pulse propagation speed in the cable is 2×108m/s, and the measurement blind zone is 20 m.
Yonghan said: "It's 4 kilometers away from here."
Dong Gong said: "Then let's drive there."
