一、从国内外发展液压支架的过程和趋势,采用液压支架支护顶板是当代采煤技术史上一个重要的变革,也是煤矿现代化的一个重要标志。1954年英国首先装备了世界上第一个自移支架工作面,并进行了试验。1958年法国人试验成功了节式支架。1960年 First, from the development of hydraulic support at home and abroad the process and trends, the use of hydraulic support roof is an important contemporary history of coal mining technology changes, but also an important symbol of the modernization of coal mines. In 1954 Britain first equipped with the world’s first self-moving stent face, and conducted a test. In 1958 the French pilot succeeded in the festival stent. 1960