Heavy Diaphragm Wall Projects
CASE STUDY
Engineering Excellence, Visible in Every Project.
Delhi Metro Project
Supplied high-performance polymer drilling fluids for Delhi Metro Phase IV expansion, covering underground stations and tunnels. Customized solutions helped maintain stable borehole conditions in challenging Delhi soil formations.
- 30+ deep foundation piles with diameters up to 1.5m
- Diaphragm wall construction for underground stations
- Zero environmental violations with biodegradable polymers
- 24/7 on-site technical support throughout the project duration
Mumbai-Ahmedabad Bullet Train Project
Partnered with NHSRCL for India’s first high-speed rail corridor. Provided specialized drilling fluid systems for bridge pier foundations and viaduct construction. Our advanced polymer technology ensured precise borehole stability in varying geological conditions along the 508 km corridor.
- 100+ bridge pier foundations with depths exceeding 40m
- Specialized solutions for coastal and riverine soil conditions
- Reduced drilling costs by 25% compared to bentonite-based systems
- Successfully met stringent Japanese quality standards
Kochi Dry Dock Project
Delivered critical drilling fluid solutions for Cochin Shipyard’s International Ship Repair Facility (ISRF). Tackled unique challenges of marine environment construction with our specialized polymer systems designed for underwater and near-shore applications.
- Sheet pile wall installation for dry dock construction
- Marine-grade polymer fluids resistant to saltwater contamination
- Successfully handled high water table and tidal variations
- Ensured zero marine pollution with eco-friendly formulations
Projects
- Urban Metro & High-speed Rail Systems
Executed Deep Earth-Retention & Diaphragm Walls
Below is the verified record of major D-Wall installations stabilized using Ecodrilling.
Surat Metro Phase-1 - Maskati Station Box D-Wall
- Surat, Gujarat
Delhi - Meerut RRTS Corridor (NCRTC) - Pkg-4 D-Wall
- Anand Vihar Hub, Delhi
Delhi Metro Rail Project - Phase 4 - Pkg DC-08 & DC-07 D-Wall
- Aerocity Corridor, Delhi
Anand Vihar Station Box Site (Shakai Tunnel Engineering Co.)
- Delhi
Kolkata Metro Project - East-West Corridor D-Wall
- Mominpur, West Bengal
Crown At Aqueview - Mahishbatan D-Wall Installation
- Kolkata, West Bengal
Victoria LNT UG1 Metro Station Trench Box
- Kolkata, West Bengal
Tapi Riverfront Development Retaining Barriers
- Surat, Gujarat
Sector-36 Deep Retention Basements
- Greater Noida, U.P.
Kanpur Metro - Pkg UG HBTU Deep Underground D-Walls
- Kanpur, U.P.
Surat Metro Phase-1 | Maskati Station Box
Project Profile
Ultra-deep underground metro transit box navigating high-density, historic urban sectors.
Structural Dimensions
High-Mass Deep Retaining Station D-Walls | Depth: 44 meters | Width: 1200 mm
Geotechnical Strata Profile
Heavy, highly reactive marine clays, black cotton soil lenses, and high-plasticity silts under tidal influence from the nearby Tapi River basin.
Geological & Engineering Challenge
Excavating massive 1200mm wide panels down to an extreme depth of 44 meters. The massive hydrostatic load from the Tapi basin combined with highly reactive marine clays caused intense hydration swelling, creating severe risks of trench wall contraction, keying errors, and stuck hydraulic grabs. Prolonged steel cage lowering times meant the trench had to remain open and stable for extended hours without settling.
Ecodrilling Advantage
Ecodrilling engineered a powerful chemical barrier that completely suppressed clay hydration and expansion, keeping the 1200mm wide trench perfectly open and geometrically true across all 44 meters. Because absolutely no flushing was required, contractors lowered the heavy structural rebar cages and poured concrete immediately, saving critical hours per panel and preventing bentonite-related disposal bottlenecks in a crowded city.
Surat Metro Phase-1 | Maskati Station Box
Project Profile
Ultra-deep underground metro transit box navigating high-density, historic urban sectors.
Structural Dimensions
High-Mass Deep Retaining Station D-Walls | Depth: 44 meters | Width: 1200 mm
Geotechnical Strata Profile
Heavy, highly reactive marine clays, black cotton soil lenses, and high-plasticity silts under tidal influence from the nearby Tapi River basin.
Geological & Engineering Challenge
Excavating massive 1200mm wide panels down to an extreme depth of 44 meters. The massive hydrostatic load from the Tapi basin combined with highly reactive marine clays caused intense hydration swelling, creating severe risks of trench wall contraction, keying errors, and stuck hydraulic grabs. Prolonged steel cage lowering times meant the trench had to remain open and stable for extended hours without settling.
Ecodrilling Advantage
Ecodrilling engineered a powerful chemical barrier that completely suppressed clay hydration and expansion, keeping the 1200mm wide trench perfectly open and geometrically true across all 44 meters. Because absolutely no flushing was required, contractors lowered the heavy structural rebar cages and poured concrete immediately, saving critical hours per panel and preventing bentonite-related disposal bottlenecks in a crowded city.
Delhi - Meerut RRTS Corridor | NCRTC Package-4 (Anand Vihar Hub)
Project Profile
Mega underground multi-modal integration transit hub handling heavy urban structural loads and active adjacent rail corridors.
Structural Dimensions
Underground Commuter Station D-Walls | Depth: 28 meters | Width: 800 mm
Geotechnical Strata Profile
High-density urban alluvium, heavily saturated silt-clay matrices, and loose, cohesionless fine gray sands with an aggressive water table.
Geological & Engineering Challenge
The close proximity to active railway tracks and busy urban traffic created continuous, severe structural ground vibrations, drastically accelerating the risk of trench side-wall peeling and collapse into the fluid. Furthermore, the hyper-congested site layout left zero footprint for massive bentonite desanding plants or slurry pools.
Ecodrilling Advantage
ECODRILLING’s rapid viscometric response stabilized the volatile sand-silt matrix against heavy external structural vibrations, maintaining a clean, straight trench profile. The highly concentrated system required 80% less site footprint. The pairing with Poly-Clear™ enabled immediate, closed-loop fluid recycling, producing clean water for immediate reuse and a dry, compact muck cake for rapid disposal.
Delhi - Meerut RRTS Corridor | NCRTC Package-4 (Anand Vihar Hub)
Project Profile
Mega underground multi-modal integration transit hub handling heavy urban structural loads and active adjacent rail corridors.
Structural Dimensions
Underground Commuter Station D-Walls | Depth: 28 meters | Width: 800 mm
Geotechnical Strata Profile
High-density urban alluvium, heavily saturated silt-clay matrices, and loose, cohesionless fine gray sands with an aggressive water table.
Geological & Engineering Challenge
The close proximity to active railway tracks and busy urban traffic created continuous, severe structural ground vibrations, drastically accelerating the risk of trench side-wall peeling and collapse into the fluid. Furthermore, the hyper-congested site layout left zero footprint for massive bentonite desanding plants or slurry pools.
Ecodrilling Advantage
ECODRILLING’s rapid viscometric response stabilized the volatile sand-silt matrix against heavy external structural vibrations, maintaining a clean, straight trench profile. The highly concentrated system required 80% less site footprint. The pairing with Poly-Clear™ enabled immediate, closed-loop fluid recycling, producing clean water for immediate reuse and a dry, compact muck cake for rapid disposal.
Delhi Metro Rail Project | Phase 4 – Package DC-08 & DC-07 (Aerocity to Tughlakabad Corridor)
Project Profile
Massive expansion of the Delhi Metro network through highly challenging underground corridors and airport transit zones.
Structural Dimensions
Metro Station Box Earth-Retention Walls | Depth: 24 meters | Width: 600 mm
Geotechnical Strata Profile
Transition zone shifting rapidly from loose Yamuna river-alluvium to highly abrasive, fractured quartzite rock fragments mixed with hard, yellow silt-clays.
Geological & Engineering Challenge
Rapid transitions from soft, sticky clays to jagged rock fragments caused intense tool wear, bit-balling, and massive slurry contamination from fine crushed rock dust. Highly alkaline and mineral-rich underground water tables threatened to chemically attack and thin out standard polymer fluids.
Ecodrilling Advantage
Our proprietary chemical synthesis featured built-in pH and ion buffers that maintained exact target viscosity despite aggressive groundwater contact. The polymer chemistry completely encapsulated the reactive yellow clays to prevent bit-balling, while its superior lubricating kinetics reduced torque on the hydraulic trenchers, maintaining a clean panel cross-section.
Delhi Metro Rail Project | Phase 4 – Package DC-08 & DC-07 (Aerocity to Tughlakabad Corridor)
Project Profile
Massive expansion of the Delhi Metro network through highly challenging underground corridors and airport transit zones.
Structural Dimensions
Metro Station Box Earth-Retention Walls | Depth: 24 meters | Width: 600 mm
Geotechnical Strata Profile
Transition zone shifting rapidly from loose Yamuna river-alluvium to highly abrasive, fractured quartzite rock fragments mixed with hard, yellow silt-clays.
Geological & Engineering Challenge
Rapid transitions from soft, sticky clays to jagged rock fragments caused intense tool wear, bit-balling, and massive slurry contamination from fine crushed rock dust. Highly alkaline and mineral-rich underground water tables threatened to chemically attack and thin out standard polymer fluids.
Ecodrilling Advantage
Our proprietary chemical synthesis featured built-in pH and ion buffers that maintained exact target viscosity despite aggressive groundwater contact. The polymer chemistry completely encapsulated the reactive yellow clays to prevent bit-balling, while its superior lubricating kinetics reduced torque on the hydraulic trenchers, maintaining a clean panel cross-section.
Mumbai - Ahmedabad High-Speed Rail Project (MAHSR Bullet Train)
Partnered with NHSRCL for India’s first high-speed rail corridor. Provided specialized drilling fluid systems for bridge pier foundations and viaduct construction. Our advanced polymer technology ensured precise borehole stability in varying geological conditions along the 508 km corridor.
Project Profile
India’s premier flagship high-speed rail corridor requiring flawless foundation settlement tolerances.
Geotechnical Strata Profile
Expansive Central India black cotton soils overlying highly weathered basalt, shifting alluvial horizons, and fractured rock transition matrices.
Geological & Engineering Challenge
Drilling massive 1800mm and 2000mm diameter boreholes down to an extreme depth of 65 meters. Shifting upper black cotton clay layers threatened to hydration-swell and squeeze the bore diameter, while deep fractured basalt zones caused severe fluid-loss loops. High-speed rail criteria meant traditional bentonite slurry routines faced intense bottlenecks due to mandatory multi-hour cleaning loops to clear heavy sand settlement.
ECODRILLING Advantage:
Our single-additive polymer matrix entirely suppressed clay hydration in the black cotton zone while sealing micro-fractures in the deep basalt layers to eliminate fluid loss. By migrating to ECODRILLING, borehole flushing was 100% eliminated. Sand particles remained encapsulated and separated from the concrete front, allowing instant rebar cage installation and direct pouring—tripling the contractor's monthly piling output.
Delhi - Meerut RRTS Corridor | NCRTC Underground Package-8 (Meerut))
Partnered with NHSRCL for India’s first high-speed rail corridor. Provided specialized drilling fluid systems for bridge pier foundations and viaduct construction. Our advanced polymer technology ensured precise borehole stability in varying geological conditions along the 508 km corridor.
Project Profile
High-capacity Regional Rapid Transit System network connecting the National Capital Region through dense urban zones.
Geotechnical Strata Profile
Deep, water-logged Indo-Gangetic alluvial plains dominated by cohesionless fine sands, micaceous silts, and alternating strata of stiff, heavy clay.
Geological & Engineering Challenge
Executing deep structural bored piles (Up to 2000mm diameter and depths exceeding 60m) and adjacent heavy retainments in low-cohesion silt. High hydrostatic pressure from an exceptionally shallow water table continuously pushed against the open bore, threatening side-wall sloughing and structural base caving.
ECODRILLING Advantage:
The advanced polymer fluid formed an immediate, continuous, high-tensile viscoelastic membrane along the unstable silt profile, completely balancing groundwater pressures. Poly-Fluid™ held fine silts in stable chemical suspension, ensuring that when concrete was placed, it displaced the fluid cleanly with zero bottom sedimentation. This completely cut out the traditional post-drilling flushing phase, protecting active urban streets from surface settlement.
Mumbai Metro Line 3 Underpass & Station Foundations
Partnered with NHSRCL for India’s first high-speed rail corridor. Provided specialized drilling fluid systems for bridge pier foundations and viaduct construction. Our advanced polymer technology ensured precise borehole stability in varying geological conditions along the 508 km corridor.
Project Profile
Mega-scale underground mass transit network slicing through ultra-congested coastal urban real estate.
Geotechnical Strata Profile
Saturated coastal overburdens, completely fractured and highly permeable tuff/breccia rock layers, under constant marine tidal variations.
Geological & Engineering Challenge
Piling operations were exposed to continuous structural vibrations from dense surface traffic and parallel tunneling. Loose coastal soils threatened to slough into the boreholes, while fractured rock fractures caused severe fluid escape, risking structural collapses near high-rise building basements.
ECODRILLING Advantage:
ECODRILLING's active rheological control adjusted instantaneously to the changing mechanical loads caused by urban vibrations. The formula cross-linked within the loose soil fractions, locking the porous rock fractures shut. Because it requires a significantly smaller equipment footprint than legacy bentonite systems, it saved crucial site space in tight urban lanes while delivering structurally flawless pile shafts.
OUR TESTIMONIALS
Built on Trust, Backed by Results
Rahul Dwivedi
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