genetic algorithms;  earth-rock dams;  Sedimentation;  Forecast

Using the basic principle of genetic algorithm and taking the amount of timeliness as the basic influencing factor, a genetic algorithm model of earth-rock dam settlement was established. In the modeling process, in order to improve the search efficiency and model accuracy, the basic genetic algorithm is improved. Decision variables are encoded with floating-point numbers; Adopt an optimal preservation strategy; Arithmetic cross operators are used; A uniform variation operator is used. At the same time, the definition domain of the decision variables is determined from the optimization model and the settlement law of earth-rock dams, and the search scope is reduced to improve the search efficiency. The application example data of Luhun Reservoir show that the model is reasonable and has good accuracy, which can provide a new way for the settlement analysis of earth-rock dams.