煤矿开采(国外英文资料).docVIP

煤矿开采(国外英文资料) 1. coal field: large area of coal bearing 2. Ida: the part of a coal mine that is divided into a mine 3. mine production capacity and type: (1) according to the production capacity of the mine, the mine is divided into large, well known mistress types. (2) mine year Production is the amount of coal produced in the mine every year. Generally small mine pit length is not less than 1500m; medium-sized mine is not less than 4000m; large mine is not less than 7000m. 3. types of mine roadway: vertical tunnel, horizontal tunnel and inclined tunnel. 4., approved production capacity: the approved comprehensive production capacity is called the approved production capacity. 5., according to the different production capacity, China has divided the mine into three types: big, small and medium. The large mine: 1.20Mt/a, 1.50Mt/a, 1.80Mt/a, 2.40Mt/a, 3.00Mt/a, 4.00Mt/a, 5.00Mt/a and 5.00Mt/a above the mine; the medium: 0.45Mt/a, 0.60Mt/a, 0.90Mt/a mine; the small mine: 0.90Mt/a, 0.15Mt/a, 0.21Mt/a and 0.30Mt/a. 6. annual production capacity of mine: the amount of coal produced by the mine every year, expressed as 10000 t or Mt. Annual production refers to the amount of coal actually produced annually. The value is often different from that of the mine, and the annual output is often unequal. 7., the biggest economic stripping ratio: the cost of coal mining by stripping ratio is not greater than the cost of underground mining. 8. classification of mine roadway: vertical tunnel, horizontal tunnel and inclined tunnel. 9., dark shaft: also known as blind shaft, blind shaft, is not directly connected with the ground of the vertical tunnel. 10., dark slope: not directly connected with the ground inclined shaft. 11., mainly down the mountain: service to a mining level of the inclined roadway. The 4. stage and the level: (1) in the scope of the mine field, along the tendency of the coal seam, according to a certain elevation, the coal seam is divided into a number of paralle