TAIMei-ting,JIARui,DUKun,et al.Strategies for Fire Hydrant Maintenance in Ancient Towns Considering Segment[J].China Water & Wastewater,2024,40(9):116-122.
Strategies for Fire Hydrant Maintenance in Ancient Towns Considering Segment
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第9期
Page:
116-122
Column:
Date of publication:
2024-05-01
- Keywords:
- ancient town fire hydrant; segment; maintenance; valve
- Abstract:
- Many ancient towns in Yunnan Province have set up special fire protection pipelines, in which these fire hydrants are prone to malfunctions because of perennial exposure to the outdoors. However, the effective determination of the valve closing strategy for repairing faulty fire hydrants is currently a challenge due to the complex topology of the pipeline network and unreasonable valve arrangement. In response to the above issues, a distance matrix was generated by using Johnson’s shortest path algorithm, the minimum valve layout corresponding to the faulty fire hydrant was found at once by fully utilizing the topological structure characteristics of the pipeline network with valves reflected in the INP file, and thus segment was quickly identified to minimize the impact of faulty fire hydrant repair on the pipeline network. Compared with the previous methods, the proposed method did not require the construction of connectivity matrices or hydraulic calculations, or the addition of virtual valves, thus having the advantages of high computational efficiency and convenient use. The method was applied to a special fire water supply network in an ancient town in Yunnan Province, and the strategy for graded valve closure repair and maintenance of fire hydrants was proposed according to the number of closed valves and the number of unworkable faulty hydrants. In the ancient town pipe network, 30.82% of the fire hydrants required key maintenance, while 32.87% of the total fire hydrants required priority maintenance.
Last Update:
2024-05-01