Engineering Solutions for Critical Underground Structures
POLYJET technologies are applied where groundwater infiltration threatens the safety, durability or operation of engineering structures.
Underground parking structures
Excavation pits
Utility tunnels
Industrial facilities
Water treatment plants
Pumping stations
Retaining walls
Hydraulic structures
Transport infrastructure
Typical Signs of Groundwater Problems
-
Water penetration through underground walls - Leakage at construction joints
- Active seepage through cracks
- Wet floor slabs
- Persistent damp zones
- Soil erosion around foundations
- Water infiltration after heavy rainfall
- Increased hydrostatic pressure
Engineering Causes of Groundwater Seepage
Groundwater seepage is usually the result of defects in waterproofing systems, construction joints, settlement-related cracking or hydrogeological conditions. Effective remediation requires identifying the source of water migration before selecting an engineering solution.
- damaged waterproofing systems;
- leaking construction joints;
- settlement-induced cracking;
- high groundwater pressure;
- permeable or heterogeneous soils;
- underground voids and washout;
- diaphragm wall defects.
How POLYJET Solves Groundwater Problems
Site inspection
Geotechnical investigation
Identification of seepage paths
Engineering calculations
Injection design
Injection waterproofing and sealing
Quality verification
Advantages of Injection Waterproofing Technologies
No extensive excavation in many projects
Localised treatment of seepage paths
Suitable under groundwater pressure
Minimal disruption to facility operation
Long-term waterproofing performance
Compatible with existing structures
Where Groundwater Seepage Control Is Applied
- Underground parking
- Technical basements
- Metro and railway tunnels
- Utility galleries
- Industrial foundations
- Excavation pits
- Pump stations
- Water treatment facilities
- Hydraulic infrastructure
Related Services
Related Projects
Why Engineers Choose POLYJET
- Engineering-first approach
- Investigation before intervention
- Non-destructive technologies
- Fast project implementation
- Proven infrastructure experience
- Comprehensive technical support
- Solutions for complex hydrogeological conditions
FAQ
Yes. In many infrastructure and underground construction projects, groundwater seepage can be eliminated using targeted injection waterproofing systems without dismantling existing structures. The appropriate method depends on the structure type, groundwater pressure, crack geometry and surrounding soil conditions.
Injection waterproofing is widely used for basements, underground parking structures, tunnels, utility galleries, lift pits, retaining walls, diaphragm walls, foundations, shafts and other below-grade structures exposed to groundwater.
The investigation usually includes a site inspection, review of construction documentation, assessment of groundwater conditions, crack mapping and, where necessary, geotechnical investigations or water infiltration testing. This allows engineers to identify the actual seepage path before selecting a repair method.
In many industrial and infrastructure facilities, injection waterproofing can be carried out without interrupting normal operations. The feasibility depends on access conditions, structural constraints and safety requirements.
Material selection is based on groundwater conditions, water pressure, crack width, soil characteristics and the required service life of the repair. Depending on project requirements, engineers may use polyurethane resins, acrylic gels or mineral injection systems.
Yes. In many projects, injection works not only stop water migration but also reduce soil washout, improve local ground properties and enhance the stability of foundations and underground structures.
Where available, engineers typically review structural drawings, geotechnical reports, previous investigation results and information on groundwater conditions. If documentation is incomplete, an engineering assessment can be performed before developing the waterproofing solution.
Verification may include visual inspection, monitoring of groundwater ingress, water tightness testing and, where required, additional engineering measurements specified by the project or supervising engineer.