In large dip Angle mining face, the antis-kid and anti-collapse question on hydraulic support is a key to mining successfully.
在大倾角工作面中，液压支架的防倒防滑问题是工作面能否顺利实现开采的关键。
The impact factors on advancing supporting speed of hydraulic support are analyzed in this article, and the path and methods to accelerate roof support speed of combined mining face are suggested.
分析了影响液压支架移架速度的因素，提出了加快综采面顶板支护速度的方法和措施。
Analyses hydraulic system of cutting unit of roadheader-ring MLE250/500-M and the electro-hydraulic control technology was adopted, it may obtain higher speed of roadheader-ring in mining face.
分析了MLE250/500-M型掘锚机截割机构的液压系统，提出采用电液控制技术方案，从而达到快速掘进的目的。
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