It is reported that in 2015 the central budget for investment in energy equipment and energy transformation and innovation focus areas of direction, involving coal, oil and gas exploration and production, coal processing and conversion, clean and efficient thermal power, nuclear power and other mechanization twelve areas will reach 85 %

Although China's coal mining technology is in the advanced level of the world, industrial concentration and other indicators are still behind the major foreign coal producing countries. Relevant experts pointed out that the degree of mechanization of mining coal in China is low, 30% lower than that of advanced coal producing countries. The "Notice" pointed out that the technical transformation of coal mining complete sets of equipment and core components is one of the key directions for China's budgetary investment in energy equipment technology transformation.

According to insiders, Shanxi, Shaanxi, Inner Mongolia and Ningxia regions, coal mining conditions better, advanced coal technology and equipment, mining machinery reached a degree of 95% or more; Liaoning, Jilin and Heilongjiang region, due to the great depth of mining, reserves Less, coupled with the complex production system of coal mines, to some extent limit the application of mechanization, the degree of mechanization of coal mining is relatively low; and the cloud, Guizhou, Guizhou, Chongqing, Hunan, Hubei, Chongqing, Guizhou, due to the existence of coal seams Unstable, chicken-like, dip angle, small coal mine size and backward technical equipment, the degree of mechanization of coal mining is very low.

The comprehensive mining technology of coal mine has realized the transformation of the coal industry from labor-intensive to capital-intensive and technology-intensive. A person from China Coal Science and Technology Group said that the next development focus of fully mechanized mining technology will focus on green energy-saving fully mechanized mining technology, equipment, steep slope, large dip angle coal seam mining complete sets and equipment, and coal seam efficient mining intelligent work technology and Equipment and other directions.

According to the requirements of the “Twelfth Five-Year Plan for Coal Industry Development”, by the end of the “Twelfth Five-Year Plan”, the mechanization degree of coal mining in the country has reached more than 75%. The reporter learned from relevant departments that the statistics show that as of the end of 2012, the degree of mechanization of coal mining in the country reached 80.1%, and the degree of mechanization of excavation loading was 55.8%.

Recently, the National Energy Administration, the Ministry of Environmental Protection, and the Ministry of Industry and Information Technology jointly issued the "Opinions on Promoting Green Development and Clean and Efficient Use of Coal Safety" (hereinafter referred to as "Opinions"), and proposed new targets: by 2020, coal mining in the country The degree of mechanization is above 85%, and the degree of mechanization of excavation is over 62%.

Help mines achieve high productivity and high efficiency

High-yield and high-efficiency mines are the direction of coal production development. Coal mining mechanization is the core of high-yield and high-efficiency mines. Experts pointed out that promoting mechanization of coal mines is the only way to transform the development mode of coal industry, eliminate backward production capacity, and improve productivity. It is also an inevitable choice to reduce the total number of coal mine accidents, improve the working environment, and reduce the labor intensity of underground workers.

According to the "Opinions", to achieve efficient and intensive production, improve production efficiency and resource recovery rate, by 2020, the recovery rates of thick and extra-thick coal seams, medium-thick coal seams and thin coal seams will reach 70%, 85% and 90% respectively. . At the same time, to encourage "the next three (or under buildings, railways, water, Confined Aquifer)" coal resources, coal pillars and corners residual coal mining for the filling.

At present, China has a large number of large-scale, safe, high-yield mines representing 10 million tons of international leading level. In addition, in view of the difficult mining of coal seams under some conditions, China has been able to achieve a higher degree of mechanized mining, and even achieve automated mining.

The reporter learned that since the introduction of fully mechanized mining technology in China, after more than 50 years of development, a series of comprehensive mechanized mining technologies and equipment have been developed for different coal seam thicknesses, and the safe and efficient production of single coal seams has been realized. These technologies are equipped in the 0.6-1.0 m thin coal seam of the Huangsha Mine of Jizhong Energy Fengfeng Group, the 1.85 m medium-thick coal seam of the Shenjia Coal Group Yanjialiang Mine, and the 7-meter thick coal seam of the Shenlian Coal Group High yield record.

For another example, Guangxi Baise Mining Bureau has implemented mechanized transformation, and the production capacity of raw coal of enterprises has increased from less than 150,000 tons per year to 5 million tons per year. The efficiency of coal mining has increased from 2 tons per worker to 26 tons per worker. The electricity consumption per ton of coal was reduced from 11.3 yuan to 6.7 yuan, and the recovery rate of coal resources increased by 20%.

In recent years, relevant departments have continuously improved the access threshold for coal mines. On May 29, 2014, the National Development and Reform Commission, the State Administration of Work Safety, the National Energy Administration and the State Administration of Coal Supervision jointly issued a document clearly stating: “No new construction, reconstruction or expansion of coal mines shall be approved without mechanized mining”.

Technical equipment transformation must be green and safe

On February 2, the Ministry of Environmental Protection released the air quality status of 74 cities in the Beijing-Tianjin-Hebei, Yangtze River Delta, Pearl River Delta region and municipalities, provincial capital cities and planned cities in 2014. Among them, among the 13 prefecture-level and above cities in the Beijing-Tianjin-Hebei region, 8 cities ranked in the top 10, and the annual concentration of PM2.5 in the region exceeded 1.6 times. In order to strengthen pollution prevention and control, the state has issued a series of policies, which have clarified the direction of equipment manufacturing to green environmental protection.

In accordance with the concept of “safety, science, economy and green”, China will continue to encourage the promotion of green mining technologies such as “filling and mining”, “water conservation” and “coal and gas mining”. The "Opinions" require the closure of small coal mines that do not have safe production conditions and serious disasters such as coal and gas outburst, and eliminate backward production capacity and equipment. At the same time, the "Opinions" clarify that the green mining technology of coal mines will be vigorously promoted, and relevant departments will be encouraged to promote the use of green mining technology according to local conditions. Xie Heping, an academician of the Chinese Academy of Engineering, pointed out that it is necessary to establish a coal production capacity evaluation index system based on the new concept of scientific production capacity, with the core of production safety, production greenness and production mechanization.

An industry insider told reporters that the coal mine safety production support capacity has been continuously improved, and it is also closely related to the improvement of equipment level and safety by some large coal enterprises in the period of better benefits. In the next few years, in order to achieve safety, efficiency, cleanliness, structural optimization and sustainable development, mine comprehensive automation is still the main direction.

In addition, it is worth noting that there are still many small and medium-sized coal mines with mining methods, technologies and equipment that are very backward. Because these small coal reserves, incomplete facilities and a lack of funds, the transformation of mechanization restricted, while the lack of small coal mines use mechanized equipment, the prevalence of low efficiency, high safety risk, resource recovery rate and other issues. In some places, small coal mines rely on increasing mine sites and increasing production through human-sea tactics, resulting in serious resource losses. Ning Yu, deputy general manager of China Coal Science and Technology Group Co., Ltd. said that for such mines, it is necessary to develop technologies and equipment suitable for comprehensive mechanization transformation of small and medium-sized coal mines, eliminate backward production capacity, and achieve safe, high-efficiency and high-production production of a large number of small and medium-sized coal mines in China.

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