Technique of construction of pre-stressed anchor bar for strengthening of high slope on right bank abutment of dam for Xiluodu Hydropower Station

After the excavation of the right abutment of the dam for Xiluodu Hydropower Station,a high lope with a height of over 300 m is created,for which the strengthening with the supporting measures such as pre-stresses anchor bar,jet-anchoring support etc.are applied with the construction techniques of filling the anchoring agent inside of cement rolls into the inner anchoring section and filling cement mortar into the tensioning section of the prestressed anchor bar,and then the bar is tensioned with torque wrench.This supporting technique of lower cost and faster working efficiency is introduced herein to provide a reference for the similar project.