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放顶煤综采技术在潞安矿区的实践及改进《煤》１９９４年第３期刊登潞安矿务局段玉福等同志的标题文章。该局目前主采３￣＃煤层，煤层赋存稳定，储量十分丰富。煤层厚度５．６１～７．２３ｍ，平均厚度６．４２ｍ，走向南北，倾向向西，煤层倾角一般在３～５°，局部达１...
Practice of Caving Coal Fully Mechanized Mining Technology in Lu’an Mining Area and Improvement “Coal” No.3, 1994, the title article of comrade Duan Yufu et al., Lu’an Mining Bureau was published. Currently, the bureau adopts 3 ~ # coal seam, with stable coal seam and abundant reserves. Seam thickness of 5.61 ~ 7.23m, the average thickness of 6.42m, to the north-south, west, coal seam dip is generally 3 ~ 5 °, the local up to 1 ...