This machine is one of the test equipment of mininghydraulic support.
本机是矿用成套液压支架试验设备之一。
2
By analyzing the geological situation of Jixian Coal Mine, the inverted-led withdrawing way of fully mechanized mininghydraulic supports is applied.
通过对集贤煤矿地质概况进行分析，决定采用倒牵式回撤综采液压支架。
3
The paper researchs the principle of protective seam mining, hydraulic slotting method and executing-digging technology to avoid risk of coal-gas outburst, and its practices in coal mine.