Indicator | Details |
Transport medium | Wastewater |
Engineering quantity | 200 meters (longest single section) |
Original pipe specifications | DN1000 Concrete pipe |
Technical features | UV curing repair of large diameter (∅1000) pipes |
1. Strict space constraints: For sewage pipes buried deeper than 8 meters accessible only through inspection chambers, custom equipment is required for liner pipe pulling;
2. High substrate requirements: The original pipe's inner wall exhibits corrosion and unevenness, necessitating prior pretreatment;
3. Efficiency requirements: Repair must be completed within one day to ensure uninterrupted urban sewage discharge.
1. Completed 200 meters of sewer pipe rehabilitation in one day, reducing construction time by 95% compared to traditional excavation methods;
2. Extended the pipe's service life by 20 years post-rehabilitation, restoring flow capacity to design standards;
3. Achieved “zero excavation, dust-free, and low-noise” operations, earning praise from both residents and regulatory authorities.
Repairs completed without digging up roads, zero resident complaints—Tianjin Municipal Pipeline Network Center