The most backward production capacity is eliminate

2022-09-23
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Backward production capacity eliminated coal mining mechanization is expected to innovate

backward production capacity eliminated coal mining mechanization is expected to innovate

China Construction machinery information

Guide: Recently, the national development and Reform Commission, the energy administration, the state Administration of work safety and the coal regulatory bureau jointly issued the notice on further promoting the elimination of backward production capacity in the coal industry during the 12th Five Year Plan period (fgy [2011] No. 2091). During the 12th Five Year Plan period, the national coal industry eliminated 97.18 million tons of backward production capacity, 2

recently, the national development and Reform Commission, the energy administration, the State Administration of work safety and the coal regulatory bureau jointly issued the notice on further promoting the elimination of backward production capacity in the coal industry during the 12th Five Year Plan period (fgny [2011] No. 2091). During the 12th Five Year Plan period, the national coal industry eliminated 97.18 million tons of backward production capacity, and 2917 small coal mines withdrew from the market. Among them, all small coal mines in Inner Mongolia, Shanxi, Beijing, Jiangsu and other provinces (cities, districts) have withdrawn, and no plans will be issued during the 12th Five Year Plan period

it is understood that during the "Eleventh Five Year Plan" period, the national coal industry has achieved great results in eliminating backward production capacity. A total of 9574 small coal mines have been closed, and 530 million tons of backward production capacity have been eliminated. However, there are still nearly 10000 small coal mines in the country. By the end of the "Twelfth Five Year Plan" period, when Japan and South Korea are leading in technology in this field, the number of small coal mines has fallen to within 7000, and the degree of coal mining mechanization has reached 55% 6. The relative error of experimental force zero point is more than ± 0.1%, The mechanization degree of tunneling has reached more than 80%

began in the 1970s

since the "Fifth Five Year Plan", in the past 40 years, China's coal mining mechanization has developed from drilling and blasting, coal cutter cutting, chain combain to high-yield and efficient fully mechanized mining, and has achieved remarkable results in coal mining mechanization technology and coal mining machinery and equipment

data show that China has vigorously developed mining mechanization since the 1970s. In 1974, 43 sets of mechanized mining equipment were introduced, 38 sets were imported from the Soviet Union and Eastern Europe from 1976 to 1978, and more than 100 sets of fully mechanized mining equipment were successively introduced from Western Europe and Japan after 1978, making the production capacity of fully mechanized mining and fully mechanized mining of key state-owned coal mines in China begin to take shape. In 1984, 46 sets of fully mechanized mining equipment were purchased from Poland, and the manufacturing technology of roadheader was introduced from Austria, which further accelerated the process of mining mechanization. While importing equipment, China digests and absorbs foreign advanced technology, and vigorously develops the research and development of domestic fully mechanized mining and excavation equipment. Statistics show that the degree of coal mining mechanization in China in 2007 has increased by 16.7 times compared with 1978, and the localization rate of mechanical equipment has significantly increased. Except for high-power shearers and key components, the rest can be completely localized, and the coal mining equipment is developing towards intelligence and high reliability. The number of high-yield, high-efficiency and safe production mines increased significantly: in 1993, there were only 12 high-yield, high-efficiency and safe production mines, reaching 268 in 2008, an increase of 21.3 times. Especially in the past 10 years, the level of coal mining technology and equipment has been significantly improved, and the fully mechanized top coal caving mining technology with large mining height of more than 10 m thick coal seams has been developed and successfully applied The working face parameters, equipment capacity and system reliability of fully mechanized mining technology with large mining height and short wall mining technology in 0 m thick coal seam have been greatly improved, and a number of mines with an annual output of 10 million tons have emerged, completely reversing the situation that China's coal mining technology and equipment level do not meet the production capacity demand

Tang Dequan, an academician of the Chinese Academy of engineering and an expert in mining electromechanical technology, once pointed out that high-yield and high-efficiency mines are the direction of coal production development, and coal mining mechanization is the core of high-yield and high-efficiency mines. Comprehensive mechanized coal mining (hereinafter referred to as fully mechanized coal mining) is a major technological revolution in the history of coal mining, an important development direction of underground coal mining technology in China's coal mining, and an important symbol of coal mining mechanization. In 1954, fully mechanized coal mining came into being in Britain and has become the main coal mining technology in advanced coal mining countries. In China, fully mechanized coal mining has achieved the unit yield of the working face and the work efficiency has increased several times or even dozens of times, the safety situation of coal mines has been significantly improved, the intensive production of coal mines has developed rapidly, and the scientific and technological level of coal mines has made great progress. Insiders told that the whole production process of fully mechanized mining in underground coal mining is mechanized, continuous and systematic, which can greatly reduce people's labor intensity, improve the efficiency of coal mining, and better protect the personal safety of underground operators

the development of fully mechanized mining technology in China in the past 40 years has generally experienced three stages: building a team, laying a foundation, tackling key technical problems in the 1970s, and popularizing and applying in the 1980s; In the 1990s, with the improvement of the level and great development, the fully mechanized coal caving project has achieved innovative results; At the beginning of the 21st century, tens of millions of tons of fully mechanized mining faces emerged, and the roadway excavation and support technology rose steadily

small coal mines should also be mechanized

the mechanization of coal mining in China's coal mines, especially state-owned coal mines, has basically popularized the three machine support. Some powerful companies, such as Shenhua Group, Yongmei Group, Huainan Mining and Yankuang, have adopted the world's advanced electro-hydraulic control system, and will gradually realize the unmanned working face

in recent years, provinces have successively carried out the integration of coal resources and closed down small coal mines, but the underground coal mines with an annual output of 300000 tons still exist, and it is also necessary to implement coal mining mechanization in these local small coal mines. These local small-scale coal mines have been taking an extensive economic growth path for many years, which is prominently manifested in the backward production mode of relying on the increase of mining points, increasing production with the crowd tactics, serious resource losses, low recovery rate, poor safety conditions and so on. The key point of technological transformation of local small coal mines should be the reform of coal mining methods and the development of coal mechanization. Only by gradually realizing mechanized mining can we fundamentally reverse the situation of low efficiency, poor safety and low recovery rate. According to the characteristics of local small-scale coal mines in China, their mechanization should be multi-level. According to different coal seam burial conditions, well types and different coal mining methods, mechanization in line with its own characteristics should be gradually developed

in the future, it will focus on comprehensive mine automation.

after more than 50 years of development, the world's comprehensive mining has become the main mining technology in advanced mining countries, especially the development of comprehensive automatic mining technology with information technology and electromechanical integration technology as the core, which is making profound changes in the coal industry. Through the targeted development of akulon safeconnect and ecopaxx polyamide 410 product leather of various specifications, Accelerate the transformation from labor-intensive to technology intensive. In terms of mine mining, the production technology with the large-scale fully mechanized mining face with an annual output of 10 million tons as the core has fundamentally changed the face of mine production; The combination of artificial intelligence and expert consultation system has opened up a way for intelligent comprehensive mechanized coal mining; The mines are generally developing towards the "one mine, one side" high-yield and high-efficiency mode

in recent years, the output and degree of mechanized coal mining in China have achieved rapid growth, the number of mining faces has been reduced, the unit yield has been increased, the work efficiency has been improved, and the level of mechanized coal mining has been significantly improved. The development of fully mechanized mining equipment in China has experienced a process from scratch in the production of fully mechanized mining in key state-owned coal mines. From the introduction and digestion, the introduction and improvement to the proportion of imported equipment has decreased year by year. At present, the domestic equipment has occupied a leading position

wangjinhua, general manager of China Coal Science and Industry Group Co., Ltd., believes that while China's modern mining technology is developing rapidly, new technologies still need to be continuously studied and developed: the intelligent technology of high-intensity mining face equipment needs to be studied and developed. Truly realizing the automatic control of coal machinery equipment and unmanned working face will be the main development direction; The comprehensive technology to improve the reliability of the complete equipment system of the working face needs to be further developed; The coordinated mining technology of safety, environment and coal mining needs to be developed; The law of surrounding rock activity under the condition of high-intensity mining needs to be further studied

the relevant person of China Coal Industry Association said that the development of coal mining mechanization needs to transform the coal industry with high and new technology from the technical level to achieve safe, efficient, clean and sustainable development; Optimize the structure from the system level and establish large enterprise groups. Looking forward to the next 10 years, mine integrated automation is the main direction, and safety, efficiency, cleanliness, structural optimization and sustainable development are the development direction of the coal industry. Specifically, it can be summarized as "three modernizations": intensification characterized by large enterprise groups and diversified operations; Integrated automation with information technology and electromechanical integration technology as the core; Clean purification based on green mining and clean coal technology. The focus of the recent development of fully mechanized mining technology is the complete set of automatic mining technology in the coal face, the complete set of efficient and rapid roadway formation technology for coal roadway excavation to speed up the bolt support speed, the complete set of mechanized and rapid roadway formation technology for rock roadway excavation, in addition to these advantages, as well as the complete set of efficient and safe auxiliary transportation system technology to adapt to different conditions

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