Xu Xin also heard some key questions from the words of these two people.

Obviously, the second hole must have been mineralized, otherwise they wouldn't have discussed the drill work on the layout plan.

Xu Xin's eyes were attracted by a pencil sketch on the table, picked it up and looked at it carefully for a long time, and asked, "What is this drawing?" ”

Hearing the familiar voice, Jiang Yehu raised his head and said with a surprised expression: "Hey, Xu Xin, when did you come?" ”

"I've been standing and listening to you for a while." Xu Xin said with a smile.

Jiang Yehu pointed to the section sketch in Xu Xin's hand, "This is what I drew casually, and the section of the inverted folds in the underground is not accurate." ”

"The cross-sectional picture you drew is no longer an inverted fold, but a lying fold." Xu Hengqiang corrected the problem.

"Judging from the current core occurrence of several holes, it is indeed a horizontal fold."

Jiang Yehu did not object to Xu Hengqiang's statement, but also insisted on his own judgment, "I think that the axial surface of the fold is not completely on the horizontal line, but it is inclined at a small angle, so I think it is more appropriate to characterize it as an inverted fold." ”

"It's just a statement, and it doesn't have much impact." Xu Hengqiang didn't care about these small problems.

As Xu Xin listened to their conversation, he became more and more interested in this section sketch.

From these curved lines, it is very intuitive to understand the appearance of the so-called inverted folds or lying folds.

If you compare the formation to a piece of cloth, spread it on a flat tabletop, pull a straight line in the middle of the cloth, lift the cloth along the straight line, and then let go, the cloth will fall to one side.

At this time, in the middle of the cloth, there is a phenomenon of folding.

In the folded position, three layers of cloth appear.

This is the inverted fold or flat fold of the formation.

Of course, there are various differences in lithology, occurrence and so on in the underground strata.

Judging from the discussion between Xu Hengqiang and Jiang Yehu just now, they are discussing the question of whether there are three or two layers underground in the Steep Mountain Tuo Formation of the ore-bearing layer.

In each of the steep mountain Tuo Formations, there are two layers of phosphate block rocks and interlayers of siliceous dolomite.

The profile reflects these geological phenomena in the abstraction.

Xu Xin put down the sketch of the section, looked at a long strip of printed drawings next to him, and after taking a look, he was surprised: "You have all typed out the histogram of this borehole." ”

At a glance, he saw the address description of the Steep Mountain Tuo Formation, which distinguished three layers of phosphate block rocks.

Judging from the catalog of borehole cores, there is not much difference from what he saw in the horizon of stratigraphic analysis.

This time, he was completely relieved.

"I typed one out and looked, but the chemical analysis data hasn't been obtained yet." Jiang Yehu explained.

"How's the mine going?" Xu Xin hurriedly asked.

"It is the same as the ore layer mined by Fu Phosphorus Group before, with a thickness of about 20 meters and a grade of 20 or 30 percent, which fully meets the mining conditions."

After a few days of familiarity, Jiang Yehu and others were used to seeing the mine.

After the second hole, they drilled several more holes in the vicinity, and they all met one after another.

"Great, I knew it was fine!" Xu Xin roared excitedly.

He swung his fist at the air, looking like he was powerful.

I'm really worried about something going wrong these days.

After all, it is a gambling contract, and the punishment after failure is too heavy.

Xu Hengqiang's face was also not as dignified as a few days ago, and when he saw Xu Xin's appearance, he smiled happily.

"You called the other day and said you were going to school to do something important, why did you come back so soon?" He asked with a smile.

Speaking of this, Xu Xin's mood instantly calmed down, and he sighed slightly: "It didn't work, but I went to make up all the opening procedures, anyway, there are no professional courses, and the credits are enough, the next thing is to write a thesis to prepare for the graduation defense, and just get the graduation certificate." ”

"I don't need to retake the course last semester?" Xu Hengqiang doesn't mind exposing Xu Xin.

Xu Xin's face collapsed instantly, "I didn't fail the course last semester, so I failed two courses in my sophomore year!" ”

"Oh, I misremembered."

Xu Hengqiang didn't have any remorse for saying wrong, and walked outside with a smile, "Luo Qiqi is estimated to be almost there, I'll wait outside." ”

The sun is shining, and Luo Qiqi is belated.

Along with it, there are Qi Mingyuan, general manager of the exploration company under the Fu Phosphorus Group, and Sheng Zhongmin, general manager of the drilling company.

As soon as he got out of the car, Luo Qiqi walked quickly, and after shaking hands with Xu Hengqiang, he said apologetically: "I'm sorry, I went to the 234 mine section just now to take a look, and I was really sorry for the delay." ”

As he was talking, at the entrance of the mine, two more cars drove in, and Shen Jie and Wang Dasheng also came.

After Xu Hengqiang exchanged a few words with the visitors, he went directly into the conference room.

Ready, hot tea brewed.

Xu Hengqiang stood in front of a white curtain on which a projector projected a project layout drawing.

His black face was expressionless and steady.

But for Shen Jie, Wang Dasheng and others, they haven't seen each other for many days, and they can feel the high-spirited breath from Xu Hengqiang.

"We have now completed four holes, the first hole ZK5101 has not been mineralized, and the new and old strata are in normal order. Later, we did not follow the conventional idea of drilling arrangement, and the second hole was drilled directly in the third exploration line, which is the hole ZK5307. ”

Xu Hengqiang said, stretched out his hand and pointed to the small circle on the projection screen representing the corresponding position of the drilled hole.

The naming of the borehole is also particular.

ZK stands for borehole, the first digit 5 represents the five ore section, the second digit 1 or 3 represents the exploration line, and the following digits 01 and 07 represent the drill hole number.

For those who attended the meeting, it was clear at a glance where the drilled holes were on the layout of the project.

"I listened to the technician here report to me, and the next few holes are in good condition."

Qi Mingyuan vaguely remembered that when he saw Xu Hengqiang a few days ago, the other party looked solemn because he didn't see the mine in the first borehole.

As a result, two days later, the technician who was arranged here reported to him that it was the second Kongjian mine.

In the last two or three days, it has also been reported that the third and fourth holes have also been mineralized.

Moreover, the mine situation is very good!

Listening to the report of the technician under him on the phone, he only had a vague idea, and he didn't know the specific situation of a few drill holes.

After getting the news, he immediately reported to Luo Qiqi.

Luo Qiqi heard the news, and his mouth was wide open enough to swallow a duck egg.

It happened that Xu Hengqiang contacted them, saying that he wanted to revise the implementation plan and prepare to go directly to a deep hole.

Luo Qiqi, Qi Mingyuan, Sheng Zhongmin and others put down the work at hand, arranged the itinerary directly, and came over early this morning.