Solutions to reduce resource loss in coal mining

Applying technology suitable to geological conditions will help mines exploit resources effectively, ensuring safety and productivity. With Thong Nhat Coal Company, in the past, when applying the single hydraulic support method, the mine's coal recovery rate was only 40-50%; the chain support technology reached about 60%. However, in recent years, the company has applied mobile hydraulic frame support technology, which not only helps the unit improve productivity, but also increases the coal recovery rate and separates rocks at the mirror more easily. In particular, with thick seams and difficult geology, mobile hydraulic frame technology demonstrates flexible adaptation and relatively effective coal recovery ability.

According to Mr. Nguyen Thanh Ha, Manager of Mining Workshop 6, Thong Nhat Coal Company - TKV: Applying mobile hydraulic frame support technology not only helps the unit increase productivity and safety, but also helps increase coal recovery rate up to 90%.

The furnace applies mobile hydraulic frame support technology of Thong Nhat Coal Company.

In addition to applying appropriate technological diagrams, Thong Nhat Coal Company has also implemented resource management measures, linking the responsibility of the leadership team and each employee with the coal recovery target at the furnaces. The management of reserves and mining boundaries has also been tightened by the unit.

Based on the annual coal consumption demand, coal mining units in TKV have applied reasonable technological diagrams and mining sequences, clearly determined the volume and quality of each mineral deposit for appropriate mobilization; regularly monitored geological fluctuations in each mining area to have appropriate technological solutions and adjusted technical indicators to meet requirements, reducing losses in mining.

To further reduce resource loss to a lower level, TKV directed units to strengthen resource management and mining boundaries. Not only with mining units, TKV also required coal screening, processing and consumption units to tighten the management of coal volume and quality in each technological stage.

At Cam Pha Port and Logistics Company - TKV, the unit responsible for consuming most of the coal for TKV, resource management is being carried out quite systematically. For example, the delivery and receipt work at the G9 Mong Duong Chemical Port Warehouse workshop has been carried out in a closed process for many years. Coal received from the mines will be transported by cars and conveyor belts to be imported to the G9 warehouse or exported directly to thermal power plants in Cam Pha.

Coal delivery and receipt via electronic weighing system at Mong Duong Chemical G9 Workshop, Cam Pha Port and Logistics Company.

Regarding coal transportation by car, currently, on average, the unit is operating over 350 trips a day to transport coal to G9 warehouse. On peak days, the unit receives about 500 trips of coal transport. To strictly manage the volume and quality, avoiding coal loss, the unit applies a modern two-way electronic weighing system. "Data on the volume of coal transported through this electronic weighing system will be transmitted to the production management area of the workshop leaders and thermal power plants. This helps the Company effectively control the volume of coal during transportation, warehousing and export to customer units" - Mr. Tran Minh Tuan, Manager of G9 Mong Duong Chemical Port Warehouse Workshop, Cam Pha Port and Logistics Company - TKV said.

Coal is a precious natural resource, a non-renewable energy source, so exploration, exploitation, processing and use must be economical and effective. According to TKV statistics, in the past, coal loss in underground mines was up to 40-50% at times; in some mines it was even higher because of complex geological conditions that made it impossible to exploit.

Nowadays, the rate of resource loss at mines is decreasing thanks to the effective selection and application of appropriate technology. The improved methods of resource management and responsibility for boundary resource management by units have also contributed significantly to the goal of reducing resource loss of TKV.

In the coming time, in the conditions of deep, long-distance drilling, large mine pressure and complex geology, the work of exploration and assessment of resource reserves will continue to be of interest to TKV and will be directed to be implemented more systematically. In particular, the exploration and mobilization of resources is always the leading task, of decisive nature to be able to fully exploit coal seams, even for thin seams or complex geological conditions. This is the basis for the Group and its units to research and apply appropriate, safe and effective mining technology solutions; contributing to increasing productivity, output and reducing coal loss to the lowest level.

Hoang Yen

Source: https://baoquangninh.vn/nhung-giai-phap-giam-ton-that-tai-nguyen-trong-khai-thac-than-3386992.html