Development course and prospect of the 50 years’ comprehensive mechanized coal mining in China

This paper analyzes the development process of comprehensive mechanization in China,and summarizes the successful experience in mechanized mining from introduction,digestion,absorption to development and innovation. It is considered that:after 50 years of development,mechanized mining in China can be divided into three stages,namely,①exploration stage (1970 s-1980 s),②coal mining technology development stage (1970 s-1980 s),③coal mining technology development stage (1970 s-1980 s),④coal mining technology development stage (1970 s-1980 s) Great development stage (1990 s) and comprehensive breakthrough stage (since the beginning of the 21st century);From the beginning of this century to the end of the 12th Five Year Plan,coal machinery equipment highlights heavy and high reliability,in order to maximize the benefit of the equipment. From the 13th five year plan to now,coal machinery equipment has developed in the direction of intelligent and unmanned,in order to realize the intelligent perception and collaborative control of working face equipment cluster;Coal mining method and technology is still the basis of the development of coal mining mechanization. Any change of coal mining method or technology will promote the upgrading of coal mining machinery and equipment industry,and even the progress of transformation. Coal mining machinery and equipment is the carrier of coal mining method and technology,so the research onLMcoal mining method and technology is still the basis and fundamental of coal mining;Although the overall level of China's coal machinery and equipment has been greatly improved,and the gap with the international advanced countries has been greatly shortened,there is still a certain gap in the key components,materials,technology and overall reliability;(5)Coal mine intelligence is the inevitable trend of the development of the coal industry,and is the ideal and direction of the coal people,but its premise must be that the equipment must have high reliability,and the operability of coal mining technology and the quantitative theory of strata control are also the basis of intelligent realization. The development JP2process of coal mine mechanization in China shows that the research and development and application of coal machinery equipment should be based on the continuous innovation of coal mining methods and technology,and the diversified mechanized mining mode suitable for the characteristics of coal occurrence is also the only way for the development of coal science and technology in China.