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本文通过技术经济比较,对营城煤矿条件下,薄及中厚煤层群采区分层或分组的合理布置方式作了分析.用经济分析法确定了在这种条件下采区分组布置的合理界限.并分析了影响这个合理界限的各种因素. 文章根据营城矿的实践经验,分析了分组布置采区的技术合理条件主要是组内各煤层间选取石门联系,溜煤眼联系或二者混合联系的可能性.分析了上述三种联系方式的优缺点.得出了营城矿条件下分组方式的结论. 文章论述了分组布置采区是开采薄及中厚煤层群的矿井降低掘进率、提高回采率以及合理集中生产的重要手段.
In this paper, through the technical and economic comparison, the rational arrangement of stratification and sub-grouping of thin and medium coal seams in Yingcheng Coal Mine is analyzed.Using economic analysis method to determine the rationality of sub-grouping in this area According to the practical experience of Yingcheng Mine, this paper analyzes the reasonable technical conditions for grouping the mining area in each group, mainly including the relationship among the coal seams, The possibility of mixed contact.The advantages and disadvantages of the above three contact methods are analyzed.The conclusions of grouping method under Yingcheng mine condition are obtained.The paper discusses that the grouping arrangement of mining area is to mine the thin and medium coal seams, Rate, improve the recovery rate and an important means to produce a reasonable concentration.