Based on the construction of the second phase of Port Said East Container Terminal in Egypt，the key construction
technologies of more than 60 m deep and T-shaped diaphragm wall in a two-layered complex stratum with soft upper and hard
lower layers，and thick-weak soil layers with high water head by sea were analyzed，including trenching technology of
diaphragm walls，preventing the collapse of the trench walls，controlling verticality，hoisting steel reinforcement cage in
‘external-truss-lifting-method’， and confecting and pouring of C50 underwater concrete in high temperature of tropical
desert. Practice shows that the technology is appropriate for ultra-deep and special-shaped diaphragm walls under complex
geological condition in near sea area. The project can be finished with a short time，low cost，good quality and safety.