TDCS is an independent Indian consultancy dedicated exclusively to tunnels and underground works — combining client-side metro experience, OEM-level TBM understanding and practical construction knowledge into engineering advice you can build on.
TDCS – Tunnel Design Consultancy Services is a focused underground engineering practice based in Thane, Maharashtra. We serve project owners, contractors, consultants and government agencies who need decisions about tunnels made by people who think about nothing else.
Our experience spans the full life of an underground project — from client-side delivery of metro tunnelling and cross passages, to OEM-side exposure to tunnel boring machines and mechanised tunnelling technology, to fibre-reinforced segmental lining solutions on major bored tunnels. That combination of owner, designer and machine perspectives is what makes our advice independent and practical.
We are a Government of India registered MSME, structured to give major-project rigour with small-practice responsiveness and cost efficiency.
Five service lines covering an underground project from first alignment sketch to breakthrough — with TBM advisory as our signature capability.
The decisions that fix a tunnel's geometry, method and cost.
Permanent and temporary underground structures, designed for construction.
Independent, OEM-literate advice on the single largest procurement decision of a bored tunnel project — the machine. We help owners and contractors specify, evaluate and procure the right TBM for the ground, not the brochure.
An independent technical seat on the owner's side of the table.
Engineering that keeps the face moving once work begins.
Years inside an implementing agency delivering underground metro works — we know how owners think, approve and escalate.
Direct exposure to tunnel boring machine technology and mechanised tunnelling from the manufacturer's side of the industry.
Advice grounded in what crews can actually build, sequence and maintain — not just what analyses permit.
No equipment to sell and no construction contract to protect. Our only product is engineering judgment.
A focused practice without layers — reviews, notes and assessments delivered at tender speed.
MSME-registered and lean by design: specialist output at a fraction of big-consultancy overheads.
Much of our work is confidential to clients. Representative experience of our team, by sector:
Client-side delivery of twin bored tunnels, stations interfaces and cross passages on a major Indian metro corridor.
Conceptual studies and methodology advice for long road tunnels in challenging Deccan trap and Himalayan-type geology.
Trenchless and microtunnelling assessments for pipeline, water and utility crossings beneath rivers, rail and highways.
Segmental lining and machine-selection advice for water supply and sewerage conveyance tunnels in urban ground.
Feasibility-stage engineering input for pressure tunnels, shafts and underground works in hydropower schemes.
Proof checks, DPR reviews and tender-stage engineering for owners, contractors and design consultants.
Service-by-service scope of what TDCS can deliver on your project.
Request by email →Focused briefs on TBM Advisory, Owner's Engineer and design services.
Request by email →Selected notes and papers on tunnelling practice in Indian ground conditions.
Request by email →B1801, Casa Adriana, Downtown Palava Phase II,
Antarli, Taloja Bypass Road,
Thane – 421204, Maharashtra, India