The mortar must reach a curing period of 28 days, and the strength of the cement slurry used for anchor bonding must reach above 80. According to the "Technical Specifications for Building Slope Engineering", after the grouting of the anchor rod is completed, no knocking is allowed, and no heavy objects are allowed to be hung on the end within 3 days. Before the slurry solidifies, the anchor rod protection work is done to prevent knocking, collision, Pull out the rod body and excavate beneath the reinforcement. After the anchor mortar reaches the 28-day curing period and the strength of the cement slurry used for bonding the anchor reaches above 80, samples will be taken for a pullout test. According to the design and the requirements of the "Technical Specifications for Building Slope Engineering" (GB50330-2002), the anchors will be extracted. The total number of rods is 3. The pull-out test process is as follows: cleaning the anchor rods, smoothing the slope to installing steel beams, through jacks, pads, nuts to locking nuts, and then pressurizing the anchor rods to reduce the pores to gradually increase the pressure. Pressure (1/10 of the design value) → pull-out failure of the anchor (record the displacement and force at this time).