1.1 Rebar introduction+ 1.2 Reinforced concrete protective layer + 1.3 Bending steel reinforcement + 1.4 Calculation of bending steel bars A + 1.5 Calculation of bending steel bars B + 1.6 Calculation of stirrup cutting + 1.7 Summary+ 2.1 Dam awareness+ 2.2 Practical operation of rebound detection method + 2.3 Concrete mixing+ 2.4 Seamless dam surface pouring + 2.5 Layout of seamless dam cooling water pipes +