Method for evaluating transformation sequence of old and old urban water supply pipelines

Abstract

The invention discloses a method for evaluating the transformation sequence of water supply pipelines in old and old urban areas. The method comprises the following steps of acquriing a water supply pipe network topological graph of old and old urban areas; obtaining fault coefficients of the water supply pipelines of different pipe ages; judging the proportion of each risk factor in the risk library; establishing a hydraulic risk assessment model; establishing a water supply network water quality model; establishing a water supply pipeline external influence factor weight model based on a grey theory; establishing a water supply pipeline danger level evaluation model, and grading the danger level of the water supply pipeline; establishing a hydraulic risk assessment model and a water supply network water quality model, and combining fault coefficients of water supply pipelines of different pipe ages, proportions of various risk factors in a risk library and external influence factorsof the water supply pipelines., The water supply pipeline transformation sequence can be scientifically and reasonably formulated, and the method has important practical significance for efficientlyutilizing water supply pipeline transformation funds and guaranteeing the safety of resident drinking water.

Description

technical field [0001] The invention relates to the field of municipal engineering, in particular to a method for evaluating the sequence of water supply pipeline reconstruction in old urban areas. Background technique [0002] Due to long-term operation, the inner wall of the water supply pipeline in the old urban area will be severely corroded, which not only reduces the water delivery capacity of the water supply pipeline, but also pollutes the water quality in the water supply pipeline, which poses a huge threat to the safety of drinking water for residents. Pipeline leakage and pipe bursts caused by corrosion of water supply pipelines are common, causing huge economic losses to water supply enterprises. Therefore, it is very necessary to formulate scientific and reasonable water supply pipeline renovation plans to reduce economic and social losses; [0003] At present, the renovation plans of water supply pipelines are determined subjectively by humans. There are disadv...

AI Technical Summary

Problems solved by technology

[0002] Due to long-term operation, the inner wall of the water supply pipeline in the old urban area will be severely corroded, which not only reduces the water delivery capacity of the water supply pipeline, but also pollutes the water quality in the water supply pipeline, which poses a huge threat to the safety of drinking water for residents. Pipeline leakage and pipe bursts caused by corrosion of water supply pipelines are common, causing huge economic losses to water supply enterprises. Therefore, it is very necessary to formulate scientific and reasonable water supply pipeline renovation plans to reduce economic and social losses;

[0003] At present, the renovation plans of water supply pipelines are determined subjectively by humans. There are disadvantages such as unclear understanding of the operation status of water supply pipelines, unclear identification of potential safety hazards, and unreasonable use of funds. As a result, it is impossible to formulate a reasonable order for the renovation of water supply pipelines, which is prone to huge losses. Economic consumption, and will prolong the construction period, which is not scientific and economical. Therefore, the present invention proposes a method for evaluating the order of water supply pipeline transformation in old urban areas to solve the deficiencies in the prior art