The main development method of the roadway using the shaft is called the shaft development method. When the iron ore ore angle greater than 45 ° or less than 15 °, and the burial depth, often with shaft development. Because the shaft has a large lifting capacity, it is often used in large and medium-sized mines. Shaft development is widely used in mining.
The lifting vessel in the shaft may be a cage or a bucket, or both a cage and a bucket, which are referred to as a tank well, a bucket well, and a mixing well, respectively. The cage has great flexibility for lifting, but the production capacity is low, and the lifting capacity of the bucket well is large, but the personnel and materials cannot be upgraded, and the loading and unloading systems are complicated. Taking iron ore as an example, it is generally believed that the annual output of iron ore is below 300,000 tons, and when the depth of the well is about 300m, the cage is used for lifting; when the annual output of iron ore exceeds 500,000 tons and the depth is greater than 300m, the bucket is usually used. When the depth of development is large, the geological conditions are complicated, and the construction is difficult, in order to reduce the amount of development work and reduce the number of wells properly, a mixed well may be considered.
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