Mechanical characteristics of four types of shield support are analyzed.
本文分析了四种型式掩护支架的力学特性。
Repetition goes on until the best structure of the flexible shield support is achieved.
如此反复，直至获得柔性掩护支架的最佳结构。
With a view to enlarging the ideal bearing size of the shield support, the writer also presents a way to decide the main parameters of a balance jack.
并从扩大理想承载区的观点出发，提出了平衡千斤顶主要参数的确定方法。
The paper discusses the application and the effects of the coal mining method with retreating-longwall flexible shield support in steeply-inclined coal seam.
叙述了走向长壁后退式柔性掩护支架采煤法在急斜煤层中的应用及效果。
The paper discusses the application and the effects of the coal mining method with retreating-longwall flexible shield support in steeply-inclined coal seam.
叙述了走向长壁后退式柔性掩护支架采煤法在急斜煤层中的应用及效果。
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