Digital mine

"Analyzing the situation, seizing the opportunity, standardizing mining, and promoting technological progress" is the main task of the stone mining industry in China at this stage. Around this theme, we should focus on the following aspects of work:

1. Seize the opportunity of implementing the Notice of The State Council on Rectificating and standardizing the Order of Mineral Development, do a solid job of practical work with rectification as the premise and standardization as the purpose, implement the Technical Specifications for Stone open-pit Mines, put an end to indiscriminate mining, rationally allocate mineral resources, and strictly enforce the threshold of investment scale and implementation technology of mining enterprises. Lay a foundation for the standardized mining of mines.

(2) Intensify efforts to do a good job in the promotion of mining application technology and scientific management. After years of continuous exploration, the stone mining technology suitable for China's national conditions has been basically mature, the theory and technology of scientific mining of stone mines are increasingly enriched, and the application of mining technology is more and more. It is necessary to analyze and compare the experience obtained, and sum up the applicable conditions and effects of a mining technology, the best combination of various methods and economic rationality. The conclusion has certain guiding significance, and on this basis, it can be popularized. Let enterprises understand and master the content and specialty of mechanized mining technology, understand the role of these technologies in saving resources and improving production efficiency, and effectively let enterprises realize the benefits of using mechanized mining technology, so that mining enterprises can benefit. It is necessary to mobilize the strength of the whole industry, give play to the role of experts, impart mining knowledge and experience, and use on-site exchanges, special lectures and even the establishment of junior college training, so that every enterprise and every employee can master the theory and technology of mining, improve the professional quality of employees, and improve the level of mining industry.

3. Strengthen publicity and do a good job in the promotion of localized mining equipment. The localization of mining equipment has created conditions for the comprehensive promotion of mining technology based on mechanization. In the past, the foreign equipment we introduced has the problems of expensive price, inconvenient maintenance and high cost of consumables, and the domestic mines themselves have indeed caused the "soil resistance" of foreign equipment. Now, through the efforts of mining technicians and equipment manufacturers to improve.

Security risks:

1. High temperature and humidity

The air temperature in the mine is characterized by high temperature, high humidity, large temperature difference, and different airflow sizes at different locations. The level of air temperature is related to the depth of the roadway, the underground temperature increases, and the underground working environment heat damage is serious. At the same time, it is difficult to supply fresh air source and deal with dirty air source in deep mining area. The adverse temperature conditions in mines are an important factor in the increase of upper respiratory tract infections and rheumatic diseases among workers. If these problems are not well solved, not only do these enterprises have the risk of casualties and occupational hazards, but also make normal production can not proceed smoothly.

2. Dust

Production dust is the main harmful factor of underground mine. Many production processes and processes, such as drilling, shooting, mining, rock loading, transportation, etc., can produce a large amount of dust. Workers for a long time to absorb this kind of dust, can occur silicon lung, coal lung or mixed pneumoconiosis. At present, 70% of the world's pneumoconiosis patients are in China, and the number of mine pneumoconiosis deaths in China exceeds the number of work-related deaths. The dust concentration in the mine is high, and the dust concentration qualification rate of the underground mine is only 40%-60%, and the open pit mine is only 70%-80%. With the decrease of mining depth, the comprehensive hazards such as air pollution in deep concave open pit should be paid attention to.

3. Toxic and harmful gases

Methane is often present in mine air, and its main component is methane. There are also harmful gases such as carbon monoxide, nitrogen oxides and hydrogen sulfide. Methane is a colorless odorless flammable gas with a density of O.559kg/m3. Methane mainly comes from coal seam, coal block and rock wall. Methane can be mixed with air to form an explosive gas, which can explode in the event of an open flame. Methane explodes at concentrations ranging from 5% to 16%. An important source of carbon monoxide and nitrogen oxides is the smoke produced by blasting. The use of nitroglycerin explosives can produce a large amount of carbon monoxide, while the use of ammonium nitrate explosives often produce a large amount of nitrogen oxides. In a poorly ventilated mine, smoke poisoning may occur due to smoke accumulation after blasting.