He Xianglei, who was bored on the side, raised his head at this time, looked at his calculation results and read: "I just calculated, if you look at the width of the 100-120 meters of the pit and 90 hydraulic pillars, the bearing capacity of each hydraulic pillar is 6 times that of the original pit wood!" But Section Chief Zhong, this kind of hydraulic pillar is not said to be saved by us, and it seems that it is not widely used in those large coal mining provinces, right? How much does it cost? ”

Miao Lirong also added: "Yes, as far as I know, hydraulic pillars are used in the underground coal mining industry, and the geological structure of underground coal mines is definitely more stress-resistant than the geological structure of underground bauxite, so how effective are hydraulic pillars used in underground mines in Heyuan City?" Is it possible to guarantee that the ground will not collapse? ”

Zhong Bai looked at Miao Lirong with some surprise, because she was on the point in asking this question.

Zhong Bai clearly remembers that hydraulic strut technology has actually appeared in the world for more than 20 years.

In 1954, the first hydraulic support working face was equipped in the United Kingdom, and at that time, European countries represented by the United Kingdom and the Federal Republic of Germany mainly developed simple supporting supports, which focused on stacking and knuckle supports.

Until the 70s, the supporting bracket has been the most important frame type in the world, but the stability and horizontal load resistance of this bracket is poor, and it can only be used for gently inclined coal seams below medium thickness, and the bracket damage rate is high, and the gangue sealing is poor, and it cannot adapt to the roof below medium stability.

Since the 60s, Huaguo began to develop hydraulic supports, and in the 70s, various main frame types were successfully developed, and a large number of applications were promoted and applied from the mid-80s.

It is now 1982, although there are some hydraulic support models in China, but it has not yet reached the stage of mass promotion and application, and the existing applications are also used in those large-scale underground coal mines that have been dug very deep, and the scope of use is very small.

At least in Tianhe Province, a non-coal-producing province is almost non-existent, so Zhong Bai was very surprised to hear that both she and He Xianglei seemed to know something about hydraulic strut technology.

This shows that in addition to their work, the two directors of the equipment department also pay attention to the use of relevant new equipment in other provinces of the country, at least they have heard of it, and they also know that the cost of this thing is not low.

Indeed, Zhong Bai also knows very well that if in three years, by 1985, the hydraulic pillar will fully replace the pit wood, at least in a certain scale of underground mines.

At this time, it is undoubtedly a bit fantastical to propose hydraulic pillars to replace pit wood, if it weren't for the fact that the person who said this idea was Zhong Bai, I'm afraid Miao Lirong would have angrily denounced "ridiculous"!

"If you use ordinary hydraulic struts that are currently produced in China, the problems you mentioned do exist." Zhong Bai thought for a moment and said: "But if you use the hydraulic strut of the single, outer pillar and suspension technical principle, that is, a new DWX hydraulic strut, you can effectively ensure safety and reduce the amount of use!" ”

"DWX hydraulic struts?" Miao Lirong was obviously extremely unfamiliar with this term, and it took a moment to react.

"That's right, it's DWX hydraulic struts, in fact, its whole process is called a single external column suspension technology hydraulic struts, I take the pinyin initials of the three adjectives as a shorthand, so call it well." Zhong Bai smiled.

......Obviously, even the director of the equipment department of the Provincial Department of Industry could not fully understand the concept of this new technology and equipment that she had never heard of for the first time, so she had to ask: "Where is this DWX hydraulic strut?" ”

"At the moment there should be no one in our country, but soon there will be." Zhong Bai then threw out his thoughts: "I will quickly take out the specific design drawings of DWX hydraulic struts, relevant accurate data and some research ideas in the form of internal data for you to see, if the two of us can agree that it can become a new roof support object after viewing these materials, I will report to you the next step." ”

"Wait a minute, little bell." Faced with the amount of information that exploded just now, Fu Chongshan obviously felt that his brain was no longer enough, and asked: "You mean, in order to solve the problem of insufficient support of pit wood, you suggest using hydraulic pillars instead of pit wood, right?" ”

"Yes."

"Then, Director Miao just mentioned that the kind of hydraulic strut currently used in large-scale underground coal mines is not suitable, so you proposed this new DWX hydraulic strut to replace the ordinary hydraulic strut, right?"

"Yes."

"But isn't this all just your personal idea right now? Without any physical object, how dare we agree that it can become the new equipment that must be used in the underground bauxite mine of Heyuan City in order to increase production? Fu Chongshan threw out his biggest question.

Of course, if the conventional answer is followed, Zhong Bai should naturally tell the other party the standard answer of "then we can make samples and then conduct repeated tests to reach effective conclusions before launching".

But behind this standard answer, it will take at least several years!

You must know that in the previous life, this DWX hydraulic strut technology began to be studied in 1992 until it really passed the national acceptance, and in 2003 was listed by the Ministry of Science and Technology of China as the "Tenth Five-Year" National Science and Technology Achievements Key Promotion Program Project to promote the national use, and it has gone through a full 11 years in the middle!

But how long did the supervision team or the Provincial Department of Industry ask the Heyuan underground bauxite mine to reverse the dilemma of declining production?

Trimester!

Tell me, with only three months, how can you go through the standard process and take it slowly, step by step?

Extraordinary times inevitably require extraordinary actions, so the answer Zhong Bai gave was......

"This technology has begun to be studied in foreign countries and has entered the stage of experimental trial production, and as far as I know, it has entered the advanced stage and will soon be applied to practice." Zhong Bai said word by word: "And I have been paying attention to this technology, and have some new ideas of my own, if it is improved according to my point of view, then soon the first batch of new DWX hydraulic strut products are expected to come out in the machine factory in Eastern Europe and Ukraine!" ”

"Woo...... Ukraine? Rao is Fu Chongshan is well-informed, and when he heard this extremely unfamiliar foreign name, he couldn't help but be stunned for a few seconds before remembering: "You mean...... That Ukraine, one of the Eastern European republics of the Soviet Union? ”

"Exactly." Zhong Bai had already sent the satellite to the sky first anyway, and now he was even more open: "You may not know much about Ukraine, but it is an indispensable key gear in the entire Soviet heavy industry system." ”

"The development of heavy industry in this country itself is dominated by machinery manufacturing, including the production of diesel locomotives, machine tools, mining machinery and supporting products, and is currently ahead of us in many fields."