Wall caving method is mainly used for unstable roof rock mining, ore body thickness of less than 3-4 meters slow inclined layered ore, such as iron ore, manganese ore, bauxite and clay minerals.
The characteristics of the method - it divides the ore body into a nugget, and pushes it according to the full thickness of the ore body. When the working face is advanced to a certain distance, in addition to the space required to retain the working face, the pillars must be recovered in a planned manner, and the surrounding rock of the roof is collapsed to fill the goaf. Ground pressure management is carried out by means of caving surrounding rock.
Depending on the degree of stability of roof stone, allowing the top plate exposed area is different, in order to control the area of the roof face plagioclase exposure employed is not the same.
According to the different oblique length of the working face, the wall caving method can be divided into two types: long wall caving method and short wall caving method. (referred to as the long wall method and the short wall method).
Wall caving method in our
metal mines and clay mining applications for over 20 years and has accumulated a wealth of experience.
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