长开采一种普遍采用的地下开采方法,系按前进或后退方式进行开采,整个煤层都可采出,后面不留矿柱或支护。长壁开采在欧洲已普遍采用,在美国也有所推广。长壁开采与其它方法如房柱式开采法相比,优点是通风良好和生产率高。
n. broadwall
misc. longwall mining ; all over work
... 碱性蓄电池 alkaline accumulator 长壁开采 all over work 许容浓度 allowable concentration ...
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文章摘要信息 关键词 : 浅埋煤层;冲沟坡体;长壁开采;支护阻力;顶板结构 [gap=974]Keywords : shallow coal seam;gully slope;longwall mining;support resistance;roof structure
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Longwall mining is our and Europe’s main mining means.
长壁开采是我国和欧洲产煤国的主要开采方法。
参考来源 - 浅埋煤层顶板结构灾害机理研究·2,447,543篇论文数据,部分数据来源于NoteExpress
这是长壁开采的开始。
依据浅埋煤层矿压显现特征,给出浅埋煤层长壁开采工作面支架合理工作阻力及安全界限的确定方法。
Base on the weighing feature of the shallow coal bed, the specifying method of the support working resistance and safety margin is presented in the shallow coal bed.
通过进行设计优化,提出采用旁路放水系统放水方案,可有效解决工作面初采的放水问题,为倾斜长壁开采的综放工作面放水方式提出新模式。
Through optimizing, we suggested the measure of bypass draw off system which can solve draw off problem effectively. This suggested a new mode at inclined long wall mining.
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