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The necessity of studying the structure of the bottom of the nugget
(1) The bottom structure of the ore block occupies a considerable part of the ore, accounting for about 16-20% (some as much as 20-30%). Most of the mining lanes are in the bottom structure. An important component of production in the mining of miners is the bottom structure.
(2) Practice has proved that the bottom structure of the nugget largely determines the production capacity of the mining method, labor productivity, mining workload, loss and depletion of ore, and the safety nature of the mining operation.
It can be seen that the bottom structure occupies a very important position in the mining method.
The bottom structure is not unique to a mining method. Instead, it is based on different mining methods to select the appropriate bottom structure. Of course, for a mining method, there is a bottom structure that is suitable for common use.