论文部分内容阅读
ＺＺ７２００／２０．５／３４型支撑掩护式液压支架以大同矿务局ＴＺ７２０／２０．５／３２型支架为基础进行改型设计 ,主要特点为①支架采用短四连杆陡掩护梁的紧凑型布置方式 ,适用于坚硬的老顶和直接顶的顶板条件 ,也适用于中等稳定的直接顶和较易破碎伪顶的顶板条件。②
The ZZ7200 / 20.5 / 34 type support screen hydraulic support is modified based on the TZ720 / 20.5 / 32 type support of Datong Mining Bureau. The main features are as follows: ① The support consists of a compact four- Arrangement, suitable for the hard roof and the roof of the direct top roof conditions, but also for moderately stable direct roof and more prone to break the pseudo roof top conditions. ②