一、国内外技术现状高产高效工作面是建设现代矿井的方向，九十年代以来，世界各主要采煤国家都在积极开发和应用新型高效、大功率、高可靠性综采设备，取得了良好的效果。综采工作面的生产能力大幅度提高，涌现出了一批日产超过万吨，年产达到３００万吨以上的工作面，形... First, the status of technology at home and abroad High-yield and high-efficiency work face is the direction of the construction of modern mines. Since the 1990s, all major coal mining countries in the world have been actively developing and applying new types of high-efficiency, high-power, high-reliability fully mechanized coal mining equipment and achieved good results. Effect. The production capacity of fully mechanized mining face has been greatly improved, and a batch of working face with a daily output of more than 10,000 tons and an annual output of over 3 million tons have emerged...