Upper Tamakoshi Hydropower – Epoxy and PU Grouting Works

Upper Tamakoshi Hydropower – Epoxy and PU Grouting Works

As part of the construction and quality assurance phase of the Upper Tamakoshi Hydropower Project, specialized epoxy and polyurethane (PU) grouting works were carried out to ensure water tightness and structural integrity of critical concrete components.

The scope included precision epoxy resin injections and PU grout applications to seal micro-cracks, concrete joints, and seepage paths in tunnels, dam structures, and intake galleries. The works were executed under the supervision of JVNL—an expert consultancy formed as a joint venture between Norconsult AS and Lahmeyer International GmbH—and in coordination with Sinohydro and JVNL as contractors.

Client

Nepal Electricity Authority (NEA)

Location

Dolakha District, Nepal

Consultant

JVNL – a joint venture between Norconsult AS and Lahmeyer International GmbH

Contractor

Sinohydro Corporation

Project status

Completed

Upper Tamakoshi Hydropower

Upper Tamakoshi Hydropower

Upper Tamakoshi Hydropower

Upper Tamakoshi Hydropower – Epoxy and PU Grouting Works

As part of the construction and quality assurance phase of the Upper Tamakoshi Hydropower Project, specialized epoxy and polyurethane (PU) grouting works were carried out to ensure water tightness and structural integrity of critical concrete components.

The scope included precision epoxy resin injections and PU grout applications to seal micro-cracks, concrete joints, and seepage paths in tunnels, dam structures, and intake galleries. The works were executed under the supervision of JVNL—an expert consultancy formed as a joint venture between Norconsult AS and Lahmeyer International GmbH—and in coordination with Sinohydro and JVNL as contractors.

Client

Nepal Electricity Authority (NEA)

Location

Dolakha District, Nepal

Consultant

JVNL – a joint venture between Norconsult AS and Lahmeyer International GmbH

Contractor

Sinohydro Corporation

Project status

Completed

Scope of Work & Materials Used

Epoxy Grouting:

  • Injection of low-viscosity epoxy resins into concrete cracks and joints for effective structural bonding and sealing
  • Improved durability and load-bearing capacity of key concrete sections

Polyurethane (PU) Grouting:

  • Application of PU grout to waterproof active leaks in tunnels and galleries
  • Offered flexible, fast-curing sealing suitable for dynamic hydraulic environments

Quality Control and Inspection:

  • Continuous monitoring of grouting operations and parameters
  • Post-application inspection and validation by NEA and JVNL consulting teams to ensure efficacy and long-term stability

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