The ground is never a problem.
It is the brief.
HCA carries underground and tunnelling projects from concept to commissioning: NATM, TBM and micro-tunnelling across transportation, metro, underground parking
The practice
Tunnelling is where HCA began and where its deepest bench sits. The team pairs engineering geology (rock mass classification, geo-hazard assessment, tunnelling stability) with structural design driven by the Finite Element Method, so support systems are engineered for the actual rock, not a textbook assumption.
That combination covers the full underground portfolio: highway and railway tunnels, metro running tunnels and stations, hydropower headrace and tailrace tunnels, caverns for powerhouses and storage, and trenchless micro-tunnelling under live cities.
In this sector
What we take on
Survey & Investigation
Geological mapping, rock coring, in-situ and geophysical testing
Slope Stability & Portals
Portal slope design, seepage analysis, stabilising structures
Feasibility & DPR
Alignment options, constructability, cost and risk
Detailed Engineering & Proof Checking
Lining and support design, FEM verification, design review
Tender Engineering
Specifications, NIT, bid evaluation for underground contracts
Construction Supervision
QA/QC, instrumentation review, time-cost control at the face
Selected projects