‌Project Case: Hefei Rail Transit Line 1 Waterproofing Engineering

‌Project Overview‌
Our company successfully executed the waterproofing system for the underground section of Hefei Rail Transit Line 1, covering a total area of 110,000㎡. The project included the design and construction of waterproofing solutions for subway tunnels, platforms, and ancillary facilities, utilizing polymer-modified waterproofing membranes and polyurethane coatings to ensure long-term operational safety.

‌Key Challenges‌

• Complex underground structures requiring resistance to high hydrostatic pressure and uneven settlement;
• Compliance with stringent durability and environmental standards for rail transit;
• Ensuring construction timeline and quality under multi-disciplinary site conditions.

‌Technical Solutions‌

• ‌Material Innovation‌: Applied puncture-resistant polymer self-adhesive membranes combined with high-elasticity polyurethane coatings to create a composite waterproof layer;
• ‌Process Optimization‌: Implemented pre-applied membrane bonding technology to enhance material compactness, with robotic spray systems ensuring uniform coating coverage;
• ‌Full-cycle Management‌: Utilized BIM for construction simulation and real-time leakage monitoring, achieving zero-defect delivery.

‌Project Achievements‌

• Passed watertightness tests and third-party inspections in single attempt, meeting Grade 1 requirements of GB 50108-2008;
• Completed 15 days ahead of schedule, recognized as "Quality Excellence Project" by client;
• Zero leakage incidents reported in three years of operation, validating system longevity.

‌Client Feedback‌
"Your team demonstrated exceptional expertise in overcoming complex geological challenges. The material performance and construction precision exceeded expectations, setting a new benchmark for rail transit waterproofing in Hefei." — Hefei Rail Transit Group Project Team