Anchorage and anchoring technology of spiral spikes for railway mine cement sleepers 1. Remove the fasteners for mine cement sleepers. Remove the nut, gusset plate, iron seat and small rubber pad with a wrench, and store them in a proper place. 2, nail return: on the railway line. When repairing nail holes or replacing threaded spikes, at least two sleepers must be separated before one or two spikes can be removed. Remove the threaded spike with a long-handled wrench or adjustable wrench. If the threaded spike is broken, the customer will melt the original sulfur anchor in the hole around the broken spike with a hot hollow hole ironing device or blowtorch, and take out the melt and the broken threaded spike with a small iron spoon.