Thin seam working face coal mining adaptability evaluation method

Abstract

The invention provides a thin coal seam working face mining adaptability evaluation method. The method comprises the following steps that 1, indexes are selected; 2) constructing a database; 3) quantifying the indexes and setting influence coefficients; 4) establishing a relation model of the key indexes, the theoretical productivity and the actual productivity; q is a total score; the larger the Q value is, the closer the actual capacity to the theoretical capacity is; 5, historical data is taken to conduct back test verification on the formula (1), and the accuracy of the formula (1) is examined. According to the thin seam working face mining adaptability evaluation method, through the wide historical data, the productivity prediction precision of indexes is improved, the method has guiding significance for model establishment, and establishment of a new working face and upgrading of an old working face can be conveniently guided.

Description

technical field [0001] The invention relates to the mining technology of the thin coal seam working face, in particular to a method for evaluating the mining adaptability of the thin coal seam working face. Background technique [0002] As the country's planning for coal mine production capacity construction becomes more and more refined, major coal companies require more and more accurate production capacity forecasts for new production capacity and existing renovation capacity. The theoretical maximum production capacity of working face equipment generally depends on the coal cutting of coal mining machines. The minimum value of capacity, moving capacity and conveying capacity of the transport system. According to "GB / T 37806-2019 Overall Supporting Technical Conditions for Fully Mechanized Mining Faces in Thin Coal Seams", when selecting equipment, the production capacity of the shearer shall not be less than 110% of the design production capacity of the working face, and...

AI Technical Summary

Problems solved by technology

[0003] However, the above is only the theoretical maximum production capacity, and the mining adaptability of the thin coal seam working face still has a great impact on the actual production capacity, such as roof and floor adaptability, inclination angle adaptability, control methods, personnel technical level, mine management level, etc. At present, there is no relevant evaluation method to guide the actual production capacity forecast and equipment selection

Unreasonable production capacity forecast often leads to unreasonable equipment selection. If the selection is too small, the actual production capacity will not meet the standard. If the selection is too large, investment will be wasted.

Images