Indicator | Details |
Transport medium | Natural gas |
Engineering quantity | 10 kilometers |
Original pipe specifications | DN300 (cast iron pipe) |
Work pressure | 35 days |
Construction period | "Zero disturbance" operation in residential communities |
Construction characteristics | Construction in the Fenhe River 5A-level scenic area and nature reserve, taking into account ecological protection and people's livelihood. |
1. Underground pipeline “blind box” obstacles: Older residential areas and scenic zones lack complete original pipeline network blueprints, with water supply, heating, and scenic irrigation pipelines intertwined underground, requiring manual precision detection to locate pipes;
2. Dual constraints of space and ecology: Construction within scenic areas must strictly protect vegetation and water bodies, with ecological damage strictly prohibited;
3. Multi-stakeholder interference management: Construction must occur during residential off-peak gas usage (nighttime) and tourist off-peak hours, while ensuring gas supply for the next morning's peak demand and normal scenic area operations.
1. Construction Period: Simultaneous production and construction completed in 35 days, reducing the schedule by 30% compared to excavation and pipe replacement.
2. Environmental Protection: Zero complaints during operations within a 4A-level scenic area.
3. Benefits: After repair, pipeline pressure increased to 1.5 times the pre-repair level, extending service life by 20 years.
“The ‘Four Zeros’ construction approach—maximizing project volume, minimizing construction time, reducing complaints to zero, and keeping indirect investment to a minimum—truly means we shoulder the difficulties ourselves while ensuring convenience for the public.” —Project Manager, Shanxi Gas Group