The site where coal is produced in a coal mine is called

The site where coal is produced in a coal mine is called a quarry.

The coal yard is the place where coal is piled up for combustion, which is usually an ancillary facility of a coal-fired power plant or an iron and steel mill. With the continuous improvement of China's coal production capacity, the national environmental protection policy continues to strict and people's environmental awareness continues to increase, coal production enterprises before the commonly used open coal storage method has not met the requirements, must be taken to meet the actual needs of the enterprise's fully enclosed coal storage yard, in order to ensure the enterprise's good economic efficiency, environmental protection benefits and social benefits.

Overflow window type coal storage field:

Overflow window type coal storage field has been widely used in the coal industry. Specific arrangement form is: the whole coal storage field is round, the middle of the coal storage field is a cylinder type coal drop cylinder, there are overflow coal windows at different heights of the cylinder wall, the top of the coal drop cylinder for the coal unloading equipment, the bottom of the ordinary coal pit and coal return tunnel, the diameter of the drop cylinder is usually 6m or 8m, the height of up to more than 40 meters, and the outside of the closed mesh frame structure of the coal storage shed.

The shed is equipped with ventilation, dust spraying facilities and safety exits, and if the coal has a high gas content, it is also equipped with gas monitoring and pumping facilities. When unloading the coal, the coal firstly falls into the coal drop cylinder, and then flows into the coal storage yard through the overflow coal window located in the wall of the coal drop cylinder, and when returning the coal to the coal storage yard, it is also transported out of the coal storage yard through the coal feeder and coal return belt conveyor located in the coal return tunnel, as in the case of the common trestle-type coal storage yard.

The advantages of this type of coal storage yard are: ① coal through the overflow window on the wall of the drop tube to the coal storage yard, play a certain role in dust suppression, reduce coal dust pollution, ② high stacking height, covers an area of small, by the impact of geological conditions of the project is small, beautiful appearance. Disadvantages are: back to the coal need to bulldozer auxiliary operations, low degree of automation, easy to cause the coal due to bulldozer crushing and secondary crushing, production costs and so on.