Qiaogong lockwall as a whole of the gravity-type structure is optimization designed to lower-lining,upper-gravity of the hybrid structure,using structure-anchor tie and drainage system to achieve stability of the lockwall,as a result of saving the project investment,speeding up the construction progress.

The main purposes of the field testing study and quality control of high strength structure bolt for the Three Gorges permanent shiplocks are to stabilize vertical slope rock masses and connect thin wall of concrete lining with rock masses.