Three-machine matching evaluation method for fully mechanized coal mining face of thin coal seam

Abstract

The invention provides a three-machine matching evaluation method for a fully mechanized coal mining face of a thin coal seam, which comprises the following steps of: selecting key indexes, distributing scoring rules and weights occupied in total scores to each key index, distributing the indexes under the specific thin coal seam size limit condition, calculating the scores of the indexes according to the scoring rules, and finally, adding the product of each index score and the weight of the index to obtain a total score, wherein the unidirectional index cannot be zero, the higher the total score is, the better the matching scheme is, three-machine production and matching installation are carried out according to the matching scheme, and the maximum production efficiency can be obtained.The three-machine matching evaluation method for the fully mechanized coal mining face of the thin coal seam has the advantages of being convenient to operate, capable of enabling equipment to exert performance, high in coal mining efficiency and high in practicability.

Description

technical field [0001] The invention relates to a coal mine machinery matching method, in particular to a three-machine matching evaluation method for a fully mechanized mining face in a thin coal seam. Background technique [0002] The three-machine matching of the fully mechanized mining face refers to the matching of coal shearer, scraper machine and hydraulic support. Since the equipment on the working face is installed and operated together, the purpose of the three-machine matching is to adjust the size of each component of the supporting equipment and each component after matching. The key indicators such as the clearance of the shearer, the cutting range of the shearer, and the size of the safety passage are allocated, which have a great impact on the production of the working face per unit time. Only when the matching degree of key indicators is coordinated with each other, the coal mining efficiency of the entire system in order to achieve the optimum. [0003] Du...

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Problems solved by technology

[0003] Due to space constraints in thin coal seams, the key indicators in the three-machine matching need to be further compressed. At present, only "GB / T 37806-2019 Overall Supporting Technical Requirements for Fully Mechanized Mining Faces in Thin Coal Seams" puts forward certain basic requirements for three-machine matching in thin coal seams In addition, there is no evaluation method for judging the advantages and disadvantages of supporting equipment, which leads to the frequent occurrence of unreasonable equipment matching among equipment manufacturers, which affects production efficiency, which is not conducive to the full play of equipment performance and is not conducive to the increase of coal mine production.