Fu Chongshan nodded and said: "Your idea is right, the wall caving method is also the most mainstream technology for all kinds of underground mining in China, and at present, Heyuan City has also been working how to improve the wall caving method mining, but it seems to have little effect." ”

The so-called wall caving method is actually a method commonly used in the world for small and medium-sized underground mine mining, which mainly relies on natural falling or blasting to caving ore.

To put it bluntly, after opening a certain tunnel under the ground rich in ore, the ore on the tunnel wall is naturally separated from the mountain by physical means (such as manual excavation, mechanical excavation), or the mining method of using explosives blasting to collapse the ore on a large scale and collect and transport it back to the ground.

After the ore collapse, the ore loading method is mainly according to the inclination of the ore body using electric rake, slag scraper, scraper, etc., and its support is supported by conventional wood, steel, hydraulic pressure or hydraulic pillars, and the "well" shaped concrete prefabricated block roadway protection can also be used.

"At present, because the underground bauxite mine in Heyuan City has been mined for a long time, the difficulty of mining has increased, the depth of the underground rock formation is low, the terrain is complex, and the difficulty of the ore link has greatly increased." Fu Chongshan gently tapped his fingers on the table and concluded.

We all know that no matter what technology is used in underground metal mining, as long as it is continuous mining rather than one-time mining, there are generally three major links: ore falling, ore extraction, and ore transportation.

"The difficulty of falling into the mine increases, and no matter what optimization measures are taken in the future, it is estimated that it will not have much effect." Zhong Bai nodded.

In Zhong Bai's view, since the mining links have already encountered problems, not to mention the subsequent mining and transportation links, the reduction of output is inevitable.

"Well, so this is the problem that must be fundamentally solved in the underground bauxite mine in Heyuan City. If the amount of ore falling is insufficient, it is inevitable to add more pit wood and supporting roof to ensure the safety of the mine after blasting, and the material consumption will surge, which will further increase the cost of collection......" Fu Chongshan said this, and realized that Zhong Bai seemed to have mentioned this just now, and couldn't help but be a little surprised: "Hey, Xiao Zhong, it seems that you know a lot about the situation in Heyuan City?" Have you read their other materials? ”

Zhong Bai shook his head and said, "No." I have also read some foreign literature before, but I have come to the conclusion based on the fact that they use the wall caving method, after all, the problems I just mentioned are common in underground mines that use the wall caving method, and it is impossible to be an exception in Heyuan City. ”

This conclusion was naturally common knowledge in Zhong Bai's brain, but at this time he sensed something from Fu Chongshan's surprised eyes.

Wasn't there a paper on it in 1982?

So Zhong Bai immediately searched in his memory, and sure enough, it seems that the systematic paper on the advantages and disadvantages of several collection methods in underground mines seems to have only broken out in the early 90s, no wonder this common-sense point of view came out, Fu Chongshan still seemed so surprised!

"Well, that means that your inference ability is very strong, and it is almost consistent with the content of the report submitted by the source city in the early stage." Fu Chongshan agreed with this explanation: "Before you came, I was quite worried about whether you still need a period of time to get familiar with the mine, but now it seems that this worry is superfluous......

Listening to this tone, it doesn't feel good.

A sense of foreboding immediately came to mind.

Sure enough, Fu Chongshan then said: "Since it seems that you have been prepared, then I will not hide it from you, although the list of supervision groups to Heyuan City proposed by our provincial department has not been roughly finalized, but the basic outline has come out, you must make relevant preparations as soon as possible, because at any time the hall may be determined through a meeting, and then rush to Heyuan City to carry out work, and strive to reverse the situation of their insufficient production in the first half of the year." ”

Rub, just now I was still telling me that "by the time I got off work yesterday afternoon, the list had not been completely finalized", and after listening to my two opinions, it immediately became "the basic outline has come out"?

You've gotten a little better at throwing bait, aren't you?

Zhong Bai had no choice but to ask with some "grievances": "Who are the people in the list now, can Director Fu reveal it to me first?" ”

Fu Chongshan muttered: "At present, because it is mainly a problem with equipment, the department has sent Comrade He Xianglei, deputy director of the equipment department, and Comrade Lin Ruofei, deputy director of the office, to lead the department, to grasp the equipment with one hand and logistics with the other. ”

The last time Fu Chongshan led a team to Shanping County Fertilizer Factory on the 29th of the month to investigate the technical work of KCO special nitrogen-containing fertilizer, Lin Ruofei was also together, and he persuaded Xiong Qing to come at that time.

The deputy director gave Zhong Bai the impression that he belonged to the kind of role that belonged to the kind of jack-of-all-trades, with strong ability to deal with the world and comprehensive coordination, of course, this description is not derogatory, after all, the office is a place for comprehensive work, especially lubrication and communication, which is indispensable, and generally speaking, Lin Ruofei is a reliable person.

And He Xianglei, director of the equipment department, this name Zhong Bai is relatively unfamiliar.

Although the last time I went abroad to Switzerland, there were comrades from the equipment department who participated, but that Director Miao Lirong was in the main position, and in addition, Zhong Bai did not know anything about the equipment department of the provincial department, and he didn't know whether this Director He was good to deal with and what his professional level was.

"Director Lin, I won't say much if you see me, Director He is a director who has been studying his profession all year round, and he is also responsible for mining equipment, so you don't have to worry about cooperating with the work." Fu Chongshan saw Zhong Bai's worries and emphasized: "Director He and I are about the same age, and we are full-fledged college students who graduated from Huaguo University of Science and Technology. ”

Well, as long as it is a professional, Zhong Bai really doesn't dare to say that he understands all the specific information about mining equipment, at least this Director He is also in the supervision group, so there is an object to exchange opinions with each other, Zhong Bai thought.

However, Zhong Bai still raised his own questions: "But Director Fu, the two you just mentioned are both deputy positions, so ......who is the leader of the team?" ”

In the system of Huaguo, the comrades who are responsible for leading the team in this kind of key special work supervision group are generally the main positions, and there are few deputy positions that directly lead the team, and Lin Ruofei and He Xianglei are also at the same level, and it is impossible for the organization to send two comrades at the same level at the same time, and then let one of them serve as the team leader, which will cause contradictions and lead to the problem of no one being convinced by anyone in the work.

Fu Chongshan sighed slightly and said, "Of course the leaders who lead the team are not these two, so they have not yet been determined...... Now we are waiting for the provincial department to decide when the leader of the team will be decided, and we can basically set off. ”

At this moment, a voice suddenly came from the door: "Chongshan, you come to my office immediately!" ”