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Application of Irregular Trapezoid Support to Large Inclined Fan Seam
Author(s): 
Pages: 15,52
Year: Issue:  2
Journal: COAL

Keyword:  不规则梯形支护大倾角扇形;
Abstract: 通过对峰峰矿务局五矿49向斜盆地大倾角扇形煤层条件的研究分析,采用常规梯形支护,开掘生产不安全、经济上不合理,而且还不能满足回采生产的需要。首次采用不规则梯形断面矿工钢支护,较好地解决了开采中面临的技术问题,取得了明显的经济效益和社会效益。
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