Water works in China has entered an era of maintenance and management of hazards. Graded evaluation and repair for sick and hazardous water works conforms to the green and sustainable development concept and is conducive to improve the management level. In consideration of influential factors in five aspects as hazard degree, maintenance level, reparation technology feasibility, reparation cost, and hazard occurrence time, we analyzed the weights of each influential factor via expert judgment and order relation analysis method. The weight coefficient of hazard degree is the largest, followed by that of reparation technology feasibility and maintenance level in sequence. The occurrence time of hazard has the smallest weight. On this basis, we obtained the reparation necessity index (RNI), by which the necessity of maintenance and reparation can be evaluated.
Key words
water project management /
canal project /
graded maintenance /
analysis of order relation /
hazard degree
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