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News
TBM
launched
at
Nepal’s
Sunkoshi
Marin
Diversion
Multipurpose
Project
October 26, 2022
Nepal’s Sunkoshi Marin Diversion Multipurpose Project (SMDMP) has achieved a key milestone through the launch of the double-shield Tunnel Boring Machine.

Pampha Bhusal, Nepal’s minister for energy, water resources and irrigation, inaugurated the TBM operation together with the project manager. The launch marks a new phase for the construction of a 13.1-kilometre headrace tunnel, which will connect to a new surface powerhouse on the Marin River.

 

The available head between the intake and powerhouse will be utilised to generate approx. 30 MW of energy. Water diverted from the Sunkoshi River to the Marin River through the tunnel will be used to irrigate approx. 122,000 hectares of farmland in the districts of Dhanusha, Mahottari, Sarlahi, Rauthat and Bara in the Terai Plains.

Location

Nepal

Client

Government of Nepal, Department of Water Resources and Irrigation

Markets
Hydropower Energy & Renewables Irrigation & Agriculture
Solutions
Tunnels
13.1
km
of headrace tunnel to be constructed
30
MW
of anticipated energy to be generated
122000
ha
approximate farmland to be irrigated

This multi-purpose project comprises a conventional concrete diversion weir structure (barrage and under sluice bay) across the Sunkoshi River. The diverted water will be passed through a desander to remove silt, before being conveyed via the new headrace tunnel.

SMDMP will combine hydropower and irrigation benefits and has been declared a National Pride project by the Nepalese government.

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