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Shearer mining application to soft thin-seam with hard roof

机译:采煤机在硬顶软薄煤层开采中的应用

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摘要

Study status on shearer mining in thin seams in the world is introduced. Base on the geological conditions of instable and soft thin-seam with hard roof in Caoyao Coal Mine of Yima Coal Group, China, and combined with related parameters of strata behaviors at coal faces, the paper concludes that the strata control on the thin-seam coal face is comparatively easy in line with the criteria for classification on strata stability of gently-inclined coal faces in China. Hydraulic supports of two-prop shielding with rated effective resistance of 2400kN can be employed in thin seam coal faces. Basic requirements for coordination equipments of shearer are summed up while mining thin seams. According to successful experiences of extracting thin seams in similar geological conditions in China, the scheme of feasibility coordination equipments of shearer is optimized in thin seams with thickness of 0.8-1.4m and 1.1-1.9m, respectively. The conclusions will provide a reference value for Caoyao Coal Mine on carrying out mechanized mining of the mine, improving safety production capability, and prolonging the mine life.
机译:介绍了世界上薄煤层采煤机开采的研究现状。结合我国义马煤业集团高要煤矿不稳定软顶硬顶薄煤层的地质条件,结合煤层地层特征参数,得出薄煤层地层控制的结论。根据中国轻倾斜煤层的地层稳定性分类标准,煤层相对比较容易。额定有效阻力为2400kN的双支撑屏蔽液压支架可用于薄煤层。总结了薄煤层开采中采煤机协调设备的基本要求。根据我国相似地质条件下薄煤层抽采的成功经验,对厚度为0.8-1.4m和1.1-1.9m的薄煤层采煤机可行性协调设备方案进行了优化。结论为草窑煤矿进行机械化开采,提高安全生产能力,延长矿山寿命提供参考。

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