When Zhang Huanren heard this, he chuckled in his heart. Hurriedly took out the construction records of the past two months, combined with the construction situation in recent weeks, and carefully read it again.

Although Zhang Huanren didn't know what the conclusions drawn from the data meant, his heartbeat began to accelerate significantly.

"Zhang Zhenfeng, take a look. Zhang Huanren pretended to be calm and gave the data table to Zhang Zhenfeng, hoping that he would not be affected by Zhang Huanren and have a better explanation of these data, "You take a closer look at the data on the length of everyone's hole." ”

Zhang Huanren waited quietly for Zhang Zhenfeng. Seeing his face change, unfortunately, it wasn't the kind of change he wanted to see.

"Zhang Huanren, this ......" Zhang Zhenfeng directly snuffed out the remaining half of the cigarette and carefully checked the data on it.

But after reading it, he Mo Ran raised his head and looked at Zhang Huanren without saying a word.

"Did you find out too?" Zhang Huanren asked him softly, hoping that he would answer no. He nodded slightly, an open-minded person like him actually changed his previous personality in the face of such data conclusions.

The four caves we walked before the construction were just to the west of the mining area, and because there was no sign of small veins in those holes, Zhang Huanren decided to start digging the prospecting holes directly from the east, so as to avoid the scope of those caves.

And, since there is no one in the west, the chances of finding a vein from the east are much greater. As soon as the vein is found, everyone can go straight down to make a hole.

But what we didn't expect was that the first hole was almost 1,000 meters long, and there was no sign of a vein. Then everyone dug the mine horizontally to the west, but this time they also drilled nearly 900 meters, and still no veins were found. Zhang Huanren was definitely not reconciled and continued to move west......

If this continues, everyone has "walked" many mines from east to west, and there is still no sign of ore veins.

This is not the main problem shown in the data table. A closer look at the data in the table shows an even more surprising result: the more you move to the west, the closer you get to the range of those holes that day, the shorter the length you can excavate!!

At first, I didn't care that the holes were too long to dig in, but I often encountered rocks that were very hard, so I moved back west. As a result, I didn't expect that today Zhang Zhenfeng told me that the hole can only be played 200 meters, which is really .......

"Zhang Zhenfeng, everyone has come this way, and I feel more and more that the things that everyone is facing are becoming more and more difficult. Zhang Huanren said what he didn't dare to tell him before.

"Zhang Huanren, if you work for a while, it's really not good, you can tell Tianjizi. Just don't do it. Zhang Zhenfeng was indignant, "It's all like this, and the veins haven't been discovered yet!"

"Well, you're right, it's not the way to go on like this. Zhang Huanren looked at the data again, "Zhang Zhenfeng, you take me to the cave you just said, and let's take a look at the situation." ”

"Okay!" Zhang Zhenfeng just turned his head and said, "By the way, how is Shengli's recovery? What if you can call him too, let him see what's going on? I'm really annoyed that I haven't been there lately!"

The last time I came back, there was no big reaction at first, but within a few hours, my physical condition was quite bad, not to mention the trauma.

Later, he was examined and shocked everyone, he had a slight concussion, two cracked ribs, and a laceration on his right eardrum.

After that, Zhang Huanren let him rest and did not let him participate in everyone's construction for the time being. But without him, everyone is indeed a little annoyed. I went to see him on the boat that day, and he recovered well, but his mental state was still not as good as before.

"Well, you can come with me now and see him again. Zhang Huanren and Zhang Zhenfeng had just gone out, and suddenly an extremely low voice came from the valley not far from the mining area, which was very similar to the one everyone heard before.

The difference is that everyone seems to be closer this time, and the sound is very clear. I squinted to make out what it was, and the more I listened, the more terrifying it became.

What the hell is the turtle son's? Zhang Huanren and Zhang Zhenfeng glanced at each other, and his eyes were also quite confused. "Zhang Huanren, it may be that the wind is strong at sea. Zhang Zhenfeng explained to me, "Don't be so nervous and scare yourself." ”

"Well, let's go!" Zhang Huanren took a deep breath. Everyone has found life and separation. It seems that it is better than what Zhang Huanren saw a few days ago.

"Master, I also said that I would report to you tomorrow, but I didn't expect you to come. "Life is happy.

I was relieved to see that he was okay.

Let's go to Master Guo and blow up the rocks. He's a connoisseur. Lao Guo took the initiative to ask about Zhang Huanren's project, and Zhang Huanren told him all the things that everyone encountered in the project.

After listening to this, he frowned and thought for a long time, "I've encountered this situation once before. "What kind of rock?" Zhang Huanren glanced at Zhang Zhenfeng and hurriedly interrupted, "What kind of rock are you talking about?"

Lao Guo put down the teacup and sat up straight, "I remember that 15 years ago, there was a coal mine in the Northeast, and the deepest hole in the mine was -6,000 meters above sea level. This is already relatively deep. ”

"Hmm. Sheng Li nodded, "When the depth of the cave was more than -6,000 meters, it also encountered the situation you said. ”

"Is it because of the kind of rock relationship you said?" Zhang Huanren asked impatiently. Now for the unexplainable things that everyone has encountered, there is an urgent need for an explanation, which may be a bit self-deceptive, but in this way Zhang Huanren will be much more relieved.

"Yes. Due to the high temperature and ground pressure, a rock called molten granite was formed at -6,000 meters from the mine. ”

"Molten granite?" Zhang Zhenfeng glanced at Zhang Huanren in surprise, and Zhang Huanren also felt that way. I've heard of this kind of thing before, but it's all a legendary thing, "Is there really such a rock?"

Lao Guo nodded knowingly and continued, "This kind of molten granite is rare, and few people know about it. The surface of the rock formation is very flat, as if it has been cut by a knife, and the hardness is amazing, more than 20 times that of the well-known diamond. It is also the reason why the hardness is too great, and with the current human technology, it is not possible to cut and carve it, resulting in such a good material cannot be used. ”

"20 times!?" I only knew this thing was hard before. As soon as I heard this kind of data, I broke out in a cold sweat, but I know that in the past, the teacher once told everyone that the hardest thing in the world is diamond.

"The explosives technology used at that time was still old, so when the mine was excavated there, the whole engineering team tried every means to break the molten granite. It was also for this reason that the mine could not continue to mine deeply, and it was stopped for five years. ”

Sheng Li took a sip of tea, "It wasn't until 10 years ago, when the No. 2 rock explosives were developed and popularized in industrial and mining enterprises, that the coal mine was able to continue to survive." Because the No. 2 rock explosive is able to effectively break up this molten granite. ”

"Master Guo, that rock is so hard that it can't make a blast hole, how did they detonate the explosive?" Zhang Zhenfeng asked.

"Zhang Zhenfeng, I know this problem. Zhang Huanren didn't wait for Lao Guo to answer, so he grabbed it, after all, Lao Guo taught me something, "There is a way to achieve it, it is called chamber blasting." ”

That's right. It is understood that the coal mine opened a chamber capable of holding 500 tons of No. 2 rock explosives at 6,000 meters underground along the strike of the molten granite layer. ”

After a pause, "Then a big blast was carried out, which blew the entire layer of molten granite to pieces." And later it was also found that even under the condition of using No. 2 rock explosives, this granite can only be better broken by chamber blasting, and the effect of general blasting methods is not ideal. ”

"Master Guo, if everyone encounters this kind of rock, you can give him a chamber blast and blow him up. ”

"Zhang Zhenfeng, although the blasting of the chamber is simple and powerful, it is also risky. As far as I know, there are only three people in the country who can effectively control this kind of blasting, and I am indeed one, and the other two are estimated to be in their 80s, which is about the same as none. If memory serves, I've only used it twice in my life. ”

Zhang Huanren looked at Zhang Zhenfeng and said, "That thing has too much explosives, if it is not well controlled, a slight deviation will lead to extremely serious consequences." Lao Guo took a deep breath, "That's the case, it's better not to use it as a last resort." ”

"I'm still wondering. Zhang Huanren didn't ask a question just now, "Lao Guo, the reason for the formation of the molten granite you just said is due to the high temperature and ground pressure in the deep underground, but this mine is at sea, how can it be ......?"

"Hehe" Lao Guo's eyes suddenly flashed, "Haven't you heard of the vicissitudes of life?" "Lao Guo, Zhang Huanren suddenly realized, yes! In that case, tens of millions of years ago this was still the ocean.

After chatting with Lao Guo so much, Zhang Huanren's heart suddenly felt a lot easier, the most important thing is that everyone may have found the reason why the project can't be excavated, but is it?

It's all at this point, you can only take one step at a time, and if you really encounter this kind of rock, you can only consider yourself unlucky.

Everyone came to the mine that Zhang Zhenfeng said could only dig 200 meters. Although the length of this hole made Zhang Huanren very depressed, he still felt extremely cordial as soon as he entered the cave.

It is still comfortable to walk in the hole that everyone has made by themselves, with a clear height of 2.5 meters and a width of 3.5~4.0 meters, and there is no pressure at all for people to walk in it.

The 200-meter hole is very short, and after a while, everyone comes to the end of the hole. At the end of the cave was a 7655 drill bit that had been ground up, and the wall of the cave was full of blasting holes drilled by everyone, but Zhang Huanren poked it in with his finger, half a finger deep.