敌人变成朋友水力采煤是当前煤炭工业中具有革命意义的技术之一。“水可以用来采煤?”人们对于水力采煤感到新奇甚至产生疑问是不足为怪的。因为水从来就是矿工的敌人,矿工从开井第一天起就遇到了水;水不断地从地下岩石或者煤层的缝隙里淅沥淅沥地流出来。这些水如果不及时排走,它就会淹没矿井,使全矿的生产停顿。因此为了采煤,人们就必须和敌人——水作经常不 The transformation of the enemy into a friend’s hydraulic coal mining is one of the revolutionary technologies in the current coal industry. “Water can be used for coal mining?” It is not surprising that people are new to the hydraulic coal mining and even have questions. Because the water has always been the enemy of the miners, the miners encountered water from the very first day of the well; the water continued to drain out of the underground rock or coal seams. If this water is not drained in time, it will submerge the mine and cause the production of the whole mine to stop. So for coal mining, people have to work with enemies - water often