The TB Hydropower Project has two diversion tunnels, with one planar stoplog gate with sliding reverse hook installed at the outlet of each diversion tunnel, which are used for flood control before diversion tunnel closure and to block downstream water during sealing construction. The embedded parts of the gate slot are composed of the main rail, bottom sill, door lintel, and end sill. The structural characteristics, installation process, welding process, etc. of the gate can provide reference and guidance for the installation of other similar planar laminated beam sliding anti hook gates.