Problems to be noted in Construction : Cleaning Tension of steel strand in anchoring section The tension of anchor cable depends on the bonding force between steel strand and the grouting body to be transferred to the rock mass around the hole through the grouting body. Therefore, the grease on the steel strand in anchoring section must be cleaned. The anti-rust grease on the steel strand has penetrated into the internal space of the 7 steel wires, and can not only clean the surface, the steel strand must be spread out, and the 7 steel wires are cleaned and then restored. This is very troublesome and only suitable for projects with a small amount of anchor cables. For large slope projects, it is appropriate to use high temperature water jet cleaning above 90℃ in a closed container, this method does not need to disperse the steel strand and clean;