随着现代煤田立井井筒深度的加大,冻结回水管的高效回收越来越难,为提高回水管的再用率,降低成本,结合现场实践经验,开发研制了灵活、高效立井冻结拔管机,解决了多年来人工拔管时断管、低效的难题,促进了深井冻结技术的发展。 With the deepening of vertical wellbore in modern coalfields, it is more and more difficult to recover the frozen return pipe efficiently. In order to improve the reuse rate of return pipe and reduce the cost, combined with the practical experience in the field, a flexible and efficient vertical shaft freeze-pipe expelling machine , To solve the problem of tube breakage and inefficiency during artificial extubation over the years, and to promote the development of deep well freezing technology.