Taking the two-grades tree-shaped river network of someplace in southern Jiangsu province as an example,based on the water quality simulation by using S-P water quality model,the water pollution controlling optimization model,in which the object function was to minimize the sum cost of sewage disposal and transferring water for dilution,was established in this paper.

A two-step optimal design method based on the integer coding genetic algorithm for tree-type pipe network is proposed.

An optimization model for tree-type pipe network,in which the minimal investment is taken as objective function,is established and genetic algorithm is used to solve the problem.

Artificial neural networks optimal design of gravity tree pipe network;

Application of single parent genetic algorithm for optimization of tree pipe network layout;

Application of line-up competition algorithm to optimization of variable weight tree pipe network;

Linear programming model of optimal design for branch network with water tower back of network;

The branch networks are widely applied to the water supply engineering in villages and towns .

A parallel computation method for optimally locating a path shaped facility in a tree network was analyzed and improved in this paper, and an efficient search algorithm for another harder description with 0-1 programming was proposed.