Không gian ngầm – Giải pháp nền móng mềm

1.Industry Pain Points & Challenges

Trong công trình ngầm và xây dựng hố móng sâu, áp lực nước và điều kiện địa chất là những mối nguy hiểm tiềm ẩn chính:

(1) Nước ngầm trào lên và rò rỉ: Mực nước ngầm cao tạo ra lực nổi rất lớn trên sàn tầng hầm, dẫn đến tình trạng ẩm ướt nghiêm trọng và các vấn đề rò rỉ.

(2) Nguy cơ lún không đều: Việc xây dựng trên nền đất phù sa mềm có thể dễ dàng khiến công trình bị nghiêng hoặc nứt.

(3) Traditional drainage systems are prone to clogging: Traditional blind drains have poor filtration performance; once silt enters, they quickly become ineffective, resulting in poor drainage.

-Difficulty in protecting the structural waterproofing layer: Crushed stones in the backfill soil can easily tear the waterproofing layer during mechanical construction.

2.System Solution Changfeng’s comprehensive solution, “Deep Constraint + Multi-dimensional Drainage,” includes:

(1) Deep Foundation Reinforcement: Geocells are used to form a “raft” foundation in weak soil, transforming dispersed soil into a stable rigid platform through lateral constraint.

(2) Building Exterior Wall/Floor Drainage: Capillary drainage plates or water-storage boards are laid to rapidly dissipate groundwater pressure through physical gaps.

(3) High-efficiency underground space drainage matrix: A permanent, rapid water-drainage network is constructed in the underground space using plastic blind drains and rigid permeable pipes.

(4) Foundation Waterproofing Protection: Sodium bentonite waterproofing blankets (GCL) are used to provide a water-swellable, “self-healing” waterproof layer, serving as the core barrier of the structure.

3. Ưu điểm cốt lõi

(1) 40% Increase in Foundation Bearing Capacity: Geocells significantly increase the effective modulus of weak soil layers, reducing building cracking caused by settlement.

(2) Zero Water Accumulation and Drainage Efficiency: The capillary drainage structure combined with plastic blind drains achieves drainage speeds 3 times faster than traditional gravel blind drains, without scaling or clogging.

(3) Easy Installation: Compared to concrete support, the geosynthetic solution improves construction efficiency by over 50%, greatly shortening the exposure time of deep foundation pits.

4. Nghiên cứu trường hợp & Sản phẩm liên quan

Typical Case: Jakarta Metro Foundation Pit Reinforcement and Underground Utility Tunnel Drainage Project, Indonesia.