What is the new news about Yunnan coal mines in 2017? What will be the impact of the Yunnan coal mining policy? I have compiled for you the 2017 Yunnan Coal Mine Policy, I hope you like it! 2017 Yunnan Coal Mine Policy

The Yunnan Coal Mine Safety Supervision Bureau recently issued a 2017 coal mine safety supervision key task division plan, clarifying the division of labor for the whole year 12 key points of inspection work were printed and distributed to each inspector.

This plan combines the relevant requirements for reform and development in the field of work safety and the spirit of the National Video and Telephone Conference on Work Safety, the National Work Conference on Work Safety, and the Yunnan Coal Mine Safety Supervision Work Conference, aiming at the existing problems in production safety in coal mines in Yunnan Province in recent years. The main contradictions and main aspects of contradictions, with the goal of achieving a "three reductions" in the total number of accidents, fatalities, and major accidents, highlight the problem orientation and goal orientation, and delineate 12 work priorities of "six strengthening and six promoting": Strengthening Coal mine safety supervision and law enforcement, coal mine special actions to crack down on illegal activities, typical deterrents against coal mine violations, benchmarking and rectification of the "Coal Mine Safety Regulations", safety education and training for all coal mine employees, implementation of coal mine safety supervision work responsibilities; promoting the elimination and exit of backward production capacity , coal mines? One optimization and three reductions?, basic coal mine safety work, construction of dual prevention and control mechanisms for coal mine safety risk hierarchical control and hidden danger investigation and management, prevention and control of major coal mine disasters, and construction of coal mine emergency rescue capabilities.

At the same time, the plan has refined the 12 work priorities into 60 specific tasks, implemented them in every department and unit, and finalized the completion time limit, standards and quantitative indicators of work; Mine analysis and mine-specific policies have clarified what coal mining enterprises must do and are prohibited from doing. The relevant requirements are detailed, quantified, specific and operable; it emphasizes the supervision of the main responsibilities of coal mine safety and the implementation of safety supervision responsibilities. , strengthen "one case, double investigation" and joint punishment.

The introduction of the plan can not only serve as a basis for the overall coal mine safety supervision staff to perform their duties and hold them accountable for their dereliction of duty, but also serve as a tool for supervision and even coal mine management. effect. Yunnan Province closed and exited 128 coal mines in 2016

The "Notice" stated that the work of reducing overcapacity and promoting transformation and upgrading of coal mines in Yunnan Province in 2016 was solid and effective, in accordance with the following principles: Hold one bottom line, clear two channels, and strengthen three measures ?(Firmly adhere to the bottom line of suspension of production and rectification of coal mines with an annual capacity of less than 90,000 tons, clear the two channels of improvement, transformation and upgrading and voluntary withdrawal, strengthen the system of dedicated personnel to monitor coal mines for suspension of production and rectification, and strengthen the supervision of coal mines for resumption of maintenance, resumption of production, and reconstruction. Management and control, strengthen the three measures of publicity, education, and guidance for coal mines), and promote the transformation and upgrading of the coal industry and the work of reducing overcapacity and controlling overcapacity.

In 2016, 128 coal mines were closed and withdrawn in Yunnan province, cutting production capacity of 18.96 million tons, and 39 retained coal mines completed transformation and upgrading. Qujing, Zhaotong, and Dali have closed 42, 21, and 14 coal mines respectively, accounting for 60% of the total in the province. Pu'er and Yuxi cities have not closed or exited coal mines.

At the same time, innovative supervision methods and methods are used to carry out special actions to effectively prevent and contain coal mine accidents. There were 11 coal mine accidents in Yunnan Province, resulting in 20 deaths. The number of accidents was the same as that of the previous year; there were no major accidents or above for two consecutive years; the fatality rate per million tons of coal mines was 0.498, lower than the control target of 0.8.

In view of the lack of understanding in some regions and coal mining enterprises, the slow progress of transformation and upgrading, inadequate safety supervision, and lax and detailed inspections, in the next step, Yunnan Province will strengthen coal mines around the special work of comprehensive physical examination of coal mines. Comprehensive safety supervision will be carried out to strengthen the transformation and upgrading of the coal industry and the work of reducing overcapacity and controlling overcapacity. Environmental impact of coal mines

Falling surface water

Due to the large amount of mine water being discharged during the coal mining process, the groundwater level drops, causing the surface water to fall.

Staggered subsidence

Due to the large amount of underground water pumped out of coal mines, the bearing capacity of the upper and lower mines has decreased. In addition, most small kiln coal mines have not taken any reservations during the mining process. Coal pillars and other preventive measures, some small kiln coal wells even wantonly excavated and destroyed coal pillars reserved for state-owned coal mines, causing strata to shift and the surface to sink.

Water pollution

The concentration of suspended solids and other pollutants in mine wastewater is relatively high, especially the mine water flowing through coal seams containing pyrite, which is very acidic. According to the sampling test of mine wastewater in the mining area of ​​Shuizaibian, Nankeng Town, the average concentration of suspended solids is 280 mg/L, the average concentration of chemical oxygen demand is 530 mg/L, and the concentration of sulfate ions is as high as 2500 mg/L. The lowest pH value is only 2.7. If this kind of mine wastewater is discharged without treatment, it will seriously pollute surface water bodies, block rivers and farmland channels, cause soil compaction, and have a great impact on crops.

Coal gangue occupies land and weathering pollution problems

Coal gangue discharged from coal mines is generally piled nearby. As the amount of storage continues to increase, the area of ​​the storage yard is also expanding year by year. After coal gangue is weathered, rain-eroded, and spontaneously ignited, the weathered layer materials on its surface enter the atmosphere under the action of wind, seriously polluting the atmospheric environment.

Vegetation destruction

Coal mining requires a large amount of wood. Calculated based on the average consumption of 150 cubic meters of pit wood for 10,000 tons of coal production.

The city’s coal mining industry alone consumes about 100,000 cubic meters of wood a year. Such a large wood gap forces coal mines to purchase wood through multiple channels, which objectively encourages indiscriminate deforestation and makes the proportion of tree planting and logging unbalanced. . At the same time, as the groundwater level drops, the water content of surface aquifers decreases, which also affects vegetation growth.

Secondary dust

A considerable part of coal is transported by automobiles, and the leakage phenomenon is very serious. A large amount of coal is lost, causing coal dust to fly in the streets.

In order to effectively prevent and control The environmental pollution and ecological damage produced during the coal mining process have gradually put the ecological environment of coal mining areas on a virtuous cycle of development. The following countermeasures and suggestions are proposed:

1. Strengthen the comprehensive management of mine wastewater and regional environment< /p>

(1) Transform existing wastewater treatment facilities. Repair and transform aging and damaged wastewater treatment facilities and equipment to ensure long-term and stable discharge of mine wastewater up to standards.

(2) Treat wastewater discharged from some abandoned mines. Although some coal mines have stopped coal mining, they still discharge mine wastewater (commonly known as Laolong water). The main reason is that the coal mining tunnels of some coal mines are indirectly connected. All mine wastewater is discharged from the wellhead with the lowest elevation, and the iron ions in the pyrite in the original old tunnel rock faults and weathered layers are leached out, resulting in iron ions in the wastewater. The concentration of sulfate ions and sulfate ions is very high, seriously polluting the water environment. Therefore, the wastewater discharged from some abandoned mines must be treated, a sedimentation tank is built, lime and other chemicals are added to the well, and after neutralization, reaction, and sedimentation treatment, it is discharged to meet the standards.

(3) Carry out comprehensive management of some areas with serious environmental pollution and ecological damage. The first is to carry out dredging and bank protection for silted rivers; the second is to carry out water conservation projects. Generally, sewage sedimentation treatment tanks should be built at the point where surface runoff from the mining area converges.

2. Comprehensive utilization of coal gangue

The main way for comprehensive utilization of coal gangue in our city is power generation and brick making. The annual utilization volume is about 650,000 tons, but it is compared with the stockpile amount. In comparison, it can be said that the utilization amount is very small and the utilization method is single. Efforts must be made to explore new ways to comprehensively utilize coal gangue in order to eliminate coal gangue mountains in the shortest time possible. The measures that can be taken are:

(1) Increase the comprehensive utilization of coal gangue for power generation; (2) Use coal gangue instead of clay to make bricks; (3) Use coal gangue backfill for disposal: 1. Coal gangue backfill Mining area; 2. Coal gangue is used as engineering filling material.

3. Do a good job in restoring vegetation in the mining area and covering the waste pile with vegetation

(1) Implement mountain closures for afforestation, adopt grass planting, artificial afforestation and sparse forest replenishment to improve surface water conservation , the ability to maintain soil and water.

(2) Formulate practical protection plans, programs and measures for coal gangue that cannot be digested in the short term. If forests are suitable, then there will be forests, and if grass is suitable, then grass will be available, and efforts should be made to protect the overlying vegetation in the coal gangue yard.

The underground mine fire in Centralia, Pennsylvania, USA, has been burning for more than 40 years since 1962, causing groundwater to evaporate and the ground to subside. Because the veins of minerals extend throughout the town, cracks in the ground often burst into flames. The local population has also dropped from 2,000 people at its peak to 9 people in 2007.