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Sainj HEP

Geotechnical studies and detail design for a 100 MW run-of-river scheme in India

Description of project:

Sainj HEP (100 MW) is a run-of-river scheme, located on Sainj River, in the state of Himachal Pradesh, India. The project comprises a barrage 24.5 m high; intake structure; twin intake tunnels; two 9.0m (W) x 130 m (L) desander caverns; 6.3 km long HRT 3.85 m in diameter; 9.0 m diameter x 80 m high surge shaft cavern; 650 m long pressure shaft; underground powerhouse accommodating two Pelton turbine units of 50 MW each; and a 400 m long TRT with an underground GIS and surface pothead yard.

ÅF`s services:

  • Review of available geological, geotechnical, seismic data and identification of additional field investigations;
  • Optimization/value engineering of various project components;
  • Preparation of hydraulic model studies specifications;
  • Detailed work programme in line with construction schedule;
  • Design interfacing between civil - E&M/H&M;
  • Detailed design engineering documents including 3D numerical modelling of underground caverns;
  • FEM modelling of barrage and powerhouse structures;
  • Construction drawings for civil works;
  • Providing design assistance during approval from client;
  • And commissioning report/including “as built drawings”.

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