Stuck pipe handling method in trenchless pipe construction

The invention discloses a stuck pipe handling method in trenchless pipe construction. The method includes sending a cutter into each stuck pipe by a drill stem of a drilling rig; rotating the cutter to cut off the stuck pipe after the cutter reaches the vicinity of the end of a dragging pipe so as to remove the stuck pipe from the dragging pipe; repeating the above steps until all the stuck pipes are cut off; pulling the stuck pipes from a drill outlet and a drill inlet as well as the drill stem from a drill hole; finishing handling of the stuck pipes. In trenchless horizontal directional drilling and pipe laying construction, the method can be used for handling accidents safely, quickly, efficiently and inexpensively when the drill stem, a back reamer and pipes are all buried due to the stuck pipes. Therefore, abandonment and reconstruction of projects are avoided, construction period is shortened, construction cost is lowered, and enormous economic and reputation loss can be retrieved. Further, development and modification of the trenchless horizontal directional drilling construction technology are greatly promoted, application range is enlarged and the stuck pipe handling method is of practical significance.