In 2019, there were 170 coal mine accidents in China and 316 people died. The degree of mechanization of large coal mines in China has increased from 32.5% in 1978 to 97.9% in 2020, and the per capita coal production has reached 1000t/a, 6.3 times and 2.6 times higher than 137 t/a in 1978 and 276 t/a in 1999, respectively. With the concerted efforts of many parties, the coal production safety situation in China continues to improve. It is still an important task for China to improve the safety management of coal mining enterprises and avoid coal mine safety accidents.Īccording to data from the National Mine Safety Supervision Bureau, there are 4,495 coal mines in China in 2020, 4,173 of which are underground mines, and the remaining 358 are open-pit coal mines, all of which are located in northern China. The current situation that China's coal production and coal consumption are at historically high levels will not be fundamentally changed. The government has repeatedly urged coal mining enterprises to increase production capacity and ensure energy supply. Due to the external environment, such as the war between Russia and Ukraine, China's energy sources are under constant strain. However, due to the lack of natural gas and oil, coal is still the main energy in China. In order to reduce coal production safety accidents, China has closed many coal mines with low production technology and achieved great progress in work safety. Since 1949, there have been 24 accidents with more than 100 casualties for each occurring in the coal industry, totally causing 3780 deaths. With the development of coal production, there have occurred many fatal accidents in China’s coal industry. In addition, China's coal consumption has always ranked first in the world, and the ratio of coal to primary energy has always been higher than 50%. The horizontal comparison of the evaluation results indicates the main problems of each subject the longitudinal comparison points out the problems that need to be solved with the assistance of higher-level enterprises and the central government, and corresponding suggestions for coal mining enterprises and government departments are put forward to reduce the safety risks of troubled coal mining enterprises.Ĭhina is a major coal producer, and the coal production reached up to 3.84 billion tons in 2020, accounting for 51% of the world’s total (BP 2021). The current situation of safety work of four coal mining enterprises and three levels of government supervision departments was evaluated, and the evaluation results were compared with other existing data to verify the reliability of the evaluation system. The comprehensive weights of the indicators were obtained using the proposed new comprehensive weight method. For different data, the indicator weights were calculated using triangular fuzzy number, entropy weight method, CRITIC method, and three rough set methods in a total of six methods. In order to study the safety risk situation of coal mines under difficult conditions, this paper screens 98 factor indexes including multiple subjects such as enterprise managers, front-line workers, government supervisors, external environment, work quality, stress factors, economic factors, and other dimensions. The output accounts for 0.08% of the country, and the number of deaths accounts for 2.2% of the country, the safety situation of coal enterprises in province A is severe. Taking province A as an example, its coal enterprises have low output, poor efficiency, backward equipment, and low-quality personnel.
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