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。
Hydraulic support is the key equipment of the synthetically mechanized coal mining, the dynamic performance impacts on the reliability and safety of the whole mechanized working face.
液压支架作为综合机械化采煤关键设备，其动态性能的好坏直接影响着整个综采工作面的可靠性及安全性。
Through the finite element model and using formulas given in this paper the changes of hydraulic conductivity in a mining face are examined.
利用此关系式及有限元方法计算，得出了裂隙岩体渗透系数随应力的变化值。
Through the finite element model and using formulas given in this paper the changes of hydraulic conductivity in a mining face are examined.
利用此关系式及有限元方法计算，得出了裂隙岩体渗透系数随应力的变化值。
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