近几年,西德煤矿的发展,特别是对老矿井的技术改造,突出特点是加大工作面的开采强度,减少工作面的开采个数,重点装备采煤工作面,从而带动其它各个环节;采煤机械设备和支架设备更新换代较快,七十年代初期综采工作面以垛式和节式支架为主,而到七十年代末期不到十年的时间,全部由掩护式和支撑掩护式支架所代替。因而,其工作面技术指标也达到了世界的先进水平(表1)。 In recent years, the development of West Germany coal mines, especially for the technical transformation of old mines, has the prominent feature of increasing the mining intensity of the working face, reducing the number of mines to be mined, and focusing on coal mining faces to drive other links ; Mining machinery equipment and support equipment replacement faster, fully mechanized mining face in the early seventies dominated by pallets and knuckles, and by the late seventies less than ten years, all by the cover and support Replacement of the shield bracket. Therefore, the technical indicators of the working face have also reached the world advanced level (Table 1).