A coal mining method optimization method for longwall fully mechanized mining face in thin coal seam

Abstract

The invention relates to a method for optimally selecting a thin-coal-seam long-wall fully-mechanized mining-face coal mining method, and belongs to a method for determining a thin-coal-seam long-wall mining method. Principles of system engineering and mining engineering are adopted, and a multi-attribute multi-target decision model for optimally selecting the thin-coal-seam long-wall fully-mechanized mining-face mining method, which fuses an economic factor, a technical factor and a humanity factor, is established; a Monte-Carlo simulation test of index layer weight vector distribution is designed, and a three-dimensional decision judgment matrix is established; a cumulative distribution function of each array of the matrix is determined and judged; by utilizing a principle of a analytic hierarchy process, distribution features of each index weight are obtained; a weight of an index layer is determined by taking mathematical expectation of the weight of the index layer as the principle; determination on a weight vector of the mining method, which combines qualitative analysis with quantitative analysis, carries out mining method set sorting under single criterion and comprehensive criterion conditions by taking the mathematical expectation of a weight of the mining method as a principle of optimally selecting the mining method, and the mining method with a high score is the optimal mining method; and a probability of distribution of difference of the scores of the mining methods is used as credibility of optimally selecting the mining method.

Description

technical field [0001] The invention relates to a method for determining a thin coal seam coal mining method, in particular to an optimal method for a thin coal seam longwall coal mining method. [0002] technical background [0003] The choice of mining method is one of the most important decisions for mining engineers. A reasonable mining method is crucial to the mining design and production capacity planning of longwall fully mechanized mining face in thin coal seams, and has a profound impact on reducing the cost per ton of coal and optimizing labor organization. [0004] According to the current thin coal seam mining status, there are two types of thin coal seam longwall mining methods: thin coal seam roller shearer fully mechanized mining unit coal mining method and thin coal seam plow fully mechanized mining unit coal mining method. From the perspective of application effect, the fully-mechanized mining unit of the roller shearer has strong adaptability to geological c...

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Problems solved by technology

[0006] In the process of traditional thin coal seam mining design, firstly, the thin coal seam mining method is not selected according to the thin coal seam occurrence characteristics, surrounding rock characteristics of the working face, geological structure, hydrology, gas and other mining technical conditions, because there is no effective means Determining the mining method in advance, leading to affected decisions and high mining costs

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