我队从事水文地质钻探施工多年,经常遇到孔内事故.大口径水文孔事故处理困难,遇到埋、卡、烧等复杂井故时,在拉、打、顶无效的情况下,只好反、扩、掏,这样的处理方法费时费力,且极易造成次生事故,机械不能正常运转,人身安全得不到保证.在探求新的处故方法中,应用了深孔爆破技术,即利用炸药爆炸的瞬间所产生的巨大爆轰压力和强烈震动将事故钻具炸断或震松,拔出钻杆,捞起钻具,达到恢复生产的目的. Our team has been engaged in hydrogeological drilling for many years and has often encountered hole accidents. The handling of large-diameter hydrological hole accidents has been difficult. In the case of complex wells such as burial, caving, and burning, it has been difficult to pull, hit and top, but it has been ineffective. Such processing methods are time-consuming and laborious, and can easily cause secondary accidents. The machinery cannot function normally, and personal safety cannot be guaranteed. In the search for new methods, deep hole blasting technology is applied, ie, The huge detonation pressure and strong vibration generated by the explosive explosion moment will cause the accident drill to break or shake loose, pull out the drill pipe and pick up the drilling tool to achieve the purpose of restoring production.