Dibang Multipurpose Project

About Dibang Multi-Purpose Hydro Power Project:

• It is a flood control cum hydroelectric power project planned to be developed on the Dibang River, a tributary of the Brahmaputra River, in Arunachal Pradesh.
• At 2,880MW installed capacity, it will be the country’s biggest hydropower facility.
• It is being developed by India’s state-run National Hydroelectric Power Corporation (NHPC).
• The Project is designed as an energy storage project, with flood moderation as one of the key objectives, besides power generation. 
• Project Features:
  • The project envisages the construction of a 278m-high and 375m-long concrete gravity dam, which will be the highest Concrete-Gravity Dam of India. 
  • The Dam is planned to be constructed with Roller Compacted Concrete (RCC) technique and it will be the highest RCC Dam of the World. 
  • The dam will create a 43 km-long reservoir with a gross storage capacity of 3.85 billion cubic metres.
  • It includes six Horseshoe-shaped head race tunnels of length varying from 300 m to 600 m with 9 m diameter, an underground Power House, and six horseshoe-shaped tail race tunnels of length varying from 320m to 470 m with 9 m diameter.

Q1: What is a Gravity Dam?

A gravity dam is a type of dam structure that is primarily designed to resist the force of gravity and hold back water or other materials. It relies on its own weight and mass to counteract the horizontal pressure exerted by the water or other materials it is retaining. Gravity dams are among the oldest and most common types of dams used for various purposes, including water supply, irrigation, flood control, and hydroelectric power generation.

Source: Arunachal: Union MoS visits Dibang hydro power project site, interacts with SHGs