This luminous creature that looks like a river shrimp is sensitive and timid. It seems to be very afraid of a giant like Ning Xiaofan. Ning Xiaofan swam to the rock wall, and the originally dense light spots fled far away.
But the light spot that had already penetrated into the gap drilled faster.
Feeling that these glowing water creatures were not in any danger, Ning Xiaofan felt relieved and pressed the button at the end of the scanner's handle. A blue light emitted from the front of the scanner.
It didn't take long to scan the rock wall. In less than 10 minutes, Ning Xiaofan completed the scan and returned to the shore along the same path.
The scanned data is stored in a chip sealed in the handle. After being taken out, it is connected to the tablet through the conversion socket.
The area that Ning Xiaofan scanned was not large, only about three square meters. The data was connected, and soon the tablet computer displayed the three-dimensional pattern of the underwater rock wall.
Through data calculation, the thickness of the scanned rock wall was 5.6 meters. However, the cracks located at the cracks extended into the rock wall, forming several criss-crossing fracture zones. Their area not only included the scanned area, but also extended to
outside the scanning area.
Ning Xiaofan observed the three-dimensional picture for a while and had an idea in his mind. After some operations on the tablet computer, dozens of red dots appeared in the three-dimensional pattern.
Most of the people watching could not understand the three-dimensional diagram displayed on the tablet computer. However, Aunt Xiang saw some clues and couldn't help but ask: "Xiaofan, do you want to explode underwater?"
"Well, underwater blasting, I'm calculating the blasting point."
Fatty and others heard the questions and answers between Aunt Xiang and Ning Xiaofan, and then they remembered that Ning Xiaofan, the captain, had explosive expertise.
It's just that the technical requirements for underwater blasting are extremely high. Fatty said loudly: "Brother, this underwater blasting is not a job that ordinary people can do. Can you do it? Don't get yourself involved."
The fat man always spoke like a crow, so Ning Xiaofan was too lazy to respond and focused on calculating the blast point.
Calculation and correction continued for more than half an hour as the red points displayed on the three-dimensional map continued to increase and decrease. Ning Xiaofan then exhaled and said: "Okay, it should be fine."
After saying that, he opened the box beside him and started preparing underwater blasting tools.
As a top blasting expert with extremely high professionalism, Ning Xiaofan's preparations for this trip were thorough and he would not miss out on underwater blasting equipment.
A waterproof electric drill carrying a high-energy battery, a precision detonator that can withstand high water pressure, a water penetration detonation device, etc. Of course, high-yield homemade micro bombs must be prepared on site.
Preparing bombs is an extremely dangerous job. Ning Xiaofan was very confident in his ability to prepare bombs, but Fatty and others did not dare to watch any more. They all hid far away. Only Aunt Xiang stayed with Ning Xiaofan.
Seeing that Aunt Xiang stayed with him, Ning Xiaofan felt a little touched, but he was still worried about something unexpected happening, so he kindly reminded him: "Aunt Xiang, you don't have to stay here, find a place to hide."
"You are not afraid of danger, so what should I be afraid of? I will accompany you." Aunt Xiang smiled slightly and rejected Ning Xiaofan's kindness.
Underwater fixed-point blasting is not difficult to install and detonate, but it has extremely high requirements for the yield required for blasting.
There are a total of 62 blasting points designed by Ning Xiaofan. After precise calculation, each blasting point requires different amounts of explosives according to the thickness of the rock wall, and the explosives required for each blasting device cannot be more or less.
One minute, accurate to the gram.
As a result, the technical requirements for the process of preparing explosives require superb skills and a rigorous attitude, and it also takes an extremely long time.
Ning Xiaofan still uses C4, which is wrapped in rubber, waterproof, and easy to stick to. It will not detonate even if it is fired directly at the explosive. The only way to detonate it is a detonator, which is used for underwater blasting. The safety factor is undoubtedly much higher.
Ning Xiaofan brought a lot of ready-made C4, carefully separated and mixed them according to the required yield, inserted detonators, and then installed them into the detonation device.
The work of preparing explosives was complicated and time-consuming. It took more than 3 hours in total.
When he was ready, Ning Xiaofan carried a waterproof bag containing 62 micro bombs and underwater blasting tools, and a roll of fixed rope on his back. Without any extra words, he just nodded to Aunt Xiang and walked towards the water.
go.
Perhaps it was Ning Xiaofan's calmness that affected everyone. Fatty and the others, who had been hiding far away, couldn't help but come to the water bank and observe the underwater situation with serious expressions.
With the help of the diving light, everyone could clearly see Ning Xiaofan's movements underwater.
Before swimming to the underwater rock wall, Ning Xiaofan first used an electric drill to drill a few holes in the rock wall, installed fixing rings, hung up ropes, fixed his body, and then continued to use an electric drill to drill holes in the rock wall.
Drill blast holes.
The thickness of the rock wall is more than 5 meters, and the length of the drill bit is obviously not enough. However, after Ning Xiaofan's precise calculations, he is very confident that he can blast through the rock wall.
There are 62 explosion points, 25 of which require shallow drilling, and 17 of which require deep drilling of more than one foot. The remaining explosion points can be installed on the surface according to different positions.
Use a tape measure to carefully measure the drilling points, and drill holes repeatedly with an electric drill. It didn't take long to make all the holes that could accommodate the blasting device.
The 62 micro bombs were all numbered, and after being installed at each blasting point in numerical order, they were carefully checked again and no errors were found. Ning Xiaofan then turned around and returned.
After Ning Xiaofan surfaced, before Ning Xiaofan could climb up on his own, Fatty, Chen Biao and others pulled him ashore in a hurry.
"Is it done?" Fatty asked slightly nervously.
Ning Xiaofan smiled and made an "OK" gesture.
The explosion was about to be detonated next. Ning Xiaofan motioned to everyone around him to leave the shore and find a place to hide.
"Xiao Fan, come here." Aunt Xiang leaned out half of her body from behind a stalactite and waved to him.
Ning Xiaofan followed the instructions and walked over. He could roughly measure the scope of the explosion. He was not as nervous as everyone else and just stood beside Aunt Xiang.
Taking out the remote detonator, Ning Xiaofan looked around and saw that Fatty, Hou San and others had already hidden their bodies, and then gently pressed the red button on the remote control.
"Bang!"
A dull sound came from the water. It was not loud. If you don't listen carefully, you can easily ignore it.
However, everyone was paying close attention at this moment and heard the sound coming from the water.
No big movement? The faces of Fatty and others changed slightly, and a thought came into their minds. Could it be that the blasting failed?
Aunt Xiang also looked surprised at this moment and couldn't help but ask: "Xiaofan, what's going on? Why is the sound of the explosion so small?"
Ning Xiaofan smiled and said: "It's just the beginning, it's not over yet."
As soon as he finished speaking, only two or three muffled sounds of "bang bang bang" were heard. The sound was still not loud, but everyone could clearly feel a tremor under their feet.
Shock blast!
This is a unique skill of Ning Xiaofan's underwater blasting.
Unique skill one: water penetration and detonation.
For underwater detonation, open flame guide wires cannot be used, so electrical conduction detonation is generally used.
However, electrically conductive blasting devices are prohibited items and cannot be purchased on the market at all. Although Ning Xiaofan is a bomb expert, he has left the system. Naturally, such banned materials cannot be purchased. Moreover, electrically conductive devices are not ordinary.
The complex tips, conductors connecting each blasting point, and precision calculation equipment are needed. The accessories and wires cannot be packed in a box, and Ning Xiaofan cannot carry it with him at all due to its weight.
What's more, large-volume blasting requires a large amount of explosives, and the micro-blasting device configured by Ning Xiaofan cannot be matched with electrical conduction equipment.
All in all, with Ning Xiaofan's blasting method, he could only successfully blast using his own homemade methods.
Then, "underwater penetration detonation" is one of the unique skills invented by his superb blasting experience.
According to common sense, we all know that open flame guide wires cannot be used for underwater explosions, and electrical conduction equipment cannot be obtained. Therefore, if you want to detonate a bomb underwater, you have to find another way.
Ning Xiaofan's method is to use "water" to detonate the bomb with water!
Can water detonate bombs?
If the fat man knew that Ning Xiaofan used this method, he would probably spit on Ning Xiaofan's face. According to common sense, explosives cannot be used even if they get wet, but they can still detonate? Isn't this a fantasy?
However, common sense is common sense after all. Many people do not know that when gunpowder is mixed with a small amount of water, it will produce a certain boiling point, which will cause the gunpowder to undergo a chemical reaction and directly boil or even burn.
Therefore, Ning Xiaofan designed a conduit that could detonate after burning using the boiling point generated by mixing gunpowder and water.
The water penetration technology is not complicated. Ning Xiaofan only needs to install detonation tubes equipped with gunpowder and water on each mini-bomb equipped with a detonator, then affix a small sensor piece, and finally control the water through the sensor.
It penetrates into the gunpowder and finally detonates the detonator. The remote detonation reaction only takes one second!
A very old-fashioned technique, but it can produce excellent results.
As for the second unique skill, it is "concussive blasting".
Shock blasting! In short, it uses the shock wave generated by the explosion to achieve a concussive effect.
Using conventional methods, it is estimated that even 50 kilograms of explosives may not be able to penetrate a rock wall more than 5 meters thick. However, the destructive power of 50 kilograms of explosives is terrifying, and its explosion range is terrifying. If the blast cannot penetrate, it may collapse the rock wall.
The collapse of the rock wall will not only not solve the problem, but also bury the water area. In the end, Ning Xiaofan and others will probably be buried alive if they are not crushed to death by the rocks.
Given this premise, brutal blasting is not advisable, and only gentler blasting methods can be used. In this way, the technical requirements are not as high as usual.
Based on the data of scanning the rock wall, Ning Xiaofan designed a point-to-surface method to calculate the explosion point through the scanned internal structure of the rock wall, and then use the energy generated by the explosion point to achieve the purpose of decomposing the internal structure of the rock wall...
