Application of Delphi Method in Optimization of Slope Retaining Program

As there is less information in preliminary design of slope retaining and many influencing factors of design program,a new method for optimization of slope retaining program using Delphi Method is put forward.Taking Kunluo Line K1+440~+780 slope for example,the weighted value of 6 programs including stability,cost,construction period,durability,environment effect and construction safety are studied by 15 experts through two rounds of consultation.The order of quality is obtained using weighted summation.The result shows that optimal program conforms to the practice,which can provide important basis for engineering design.