Research of Evaluation and Maintenance Decision Model about Urban Water Supply Pipe Burst Hidden Trouble Based on GIS

Through the Evaluation and Maintenance Decision about the urban water supply pipe burst hidden trouble from the GIS, to provide analysis and Decision function to the Water supply Enterprise for Scientific Management. First, use AHP(Analytical Hierarchy Process) to total the evaluation quotas about the factors of pipe burst, calculate the important weight of each quota, after the adoption consistency test, establish the evaluation model of pipe burst hidden trouble, according to the evaluation level to do initial maintenance decision; the initial decision needs which pipe should be maintained, on the basis of Test cost function, maintenance cost function, damage cost function, and so on, establish the Maintenance Decision Model, to decide to maintain, or else, and take which maintenance program. Use the evaluation model of pipe burst hidden trouble and the maintenance decision Model in GIS, may reduce the maintenance cost and the pipe burst accident cost.