China-backed Tarbela Dam project in Pakistan hit by major cave-in and emergency

What Happened

A major section of the China-backed Tarbela Dam expansion project in Pakistan's Khyber Pakhtunkhwa province collapsed on Monday, triggering an emergency. The cave-in occurred at the T-5 construction site during the excavation of a connecting tunnel when a weak rock gave way, allowing a massive rush of water to pour directly into the tunnel and the under-construction power house. Pakistan's Water and Power Development Authority confirmed the accident, which led to an immediate halt in all construction work at the site.

Rescue and River Flow

One worker was swept away in the heavy water current when the accident happened, but rescue teams safely saved him. Reports indicate that all workers at the site were safely brought out, preventing major casualties. Swabi Deputy Commissioner Nasrullah Khan stated that extra water was released from the dam due to the situation, which is expected to sharply increase the water level and flow speed in the Indus River. Authorities issued strict warnings telling citizens to stay completely away from the Indus River for bathing, swimming, or boating.

Project Costs and Concerns

Videos of the collapse showed water rushing wildly and people running to save their lives amidst rising public anger over Chinese construction quality. The project has a power generation capacity of 1,530 megawatts, and a coffer dam incident also occurred here back in July, raising questions about contractors and consultants. Due to delays and flaws, the project cost has jumped from 82 billion rupees to 317 billion rupees. Funding for the project comes from the World Bank and the Asian Infrastructure Investment Bank, with the total capacity expected to rise from 4,888 megawatts to 6,418 megawatts by the targeted completion date of June 2028.

Context

Large infrastructure projects often face severe technical challenges and heavy budget overruns when built in complex geological terrain. International financial institutions routinely fund such massive hydro projects to help developing nations boost their energy output.