The SLBC Tunnel in Telangana’s Nagarkurnool district has become the focus of intense rescue operations. A tragic accident occurred when a portion of the SLBC Tunnel’s roof collapsed on February 22, 2025. The accident trapped eight workers deep inside the tunnel.
The site of the accident is 14 kilometers into the Tunnel, so rescue efforts are highly difficult.” The workers were carrying out tunneling work in the vicinity of the Tunnel Boring Machine (TBM). Unfortunately, as of this moment, rescue teams are still working around the clock to get to them. The fate of the trapped people is unclear.
The project is part of a large infrastructure project to improve water supply in Telangana: the SLBC. The incident has not failed to raise a number of questions about safety protocols and project management. Authorities are pushing to rescue the workers trapped and return some of the project’s safety measures.
What is SLBC Tunnel?
The SLBC Tunnel, also known as the Srisailam Left Bank Canal Tunnel, is a vital infrastructure project in Telangana. It aims to enhance water supply in different localities. The tunnel is built to increase agriculture output and for water distribution.
The second link itself is a major engineering effort which employs some state of the art tunneling technique. For digging deep into the earth, workers use machines such as the Tunnel Boring Machine (TBM). The project is very important for the state’s water and agriculture development.
But following the recent accident, there have been questions about the safety practices used to construct it. Experts are now reviewing procedures to ensure similar incidents never happen again.
What Occurred in the SLBC Tunnel Accident?
There was a major incident in the Tunnel on 22 Feb 2025. Part of the tunnel’s roof collapsed, trapping eight workers. The incident, which occurred 14 kilometers into the tunnel. Workers were working on a TBM (Tunnel Boring Machine).
The collapse also caused damage to a conveyor belt system. Such well-developed systems are crucial to moving supplies and debris. Without it, rescues became more complex. There was no communication or rescue channels for the workers. Many of these workers who have been trapped remain unaccounted for.
The search-and-rescue operation is now in its 11th day. It is a grim scenario, and authorities are doing everything possible to reach the trapped.
SLBC Tunnel Project: Importance
The State of Telangana is having the Constructing the SLBC TUNNEL Project. It is primarily used for enhancement of the water supply system. This project is critical for both agricultural productivity and urban water management. It is expected to help out thousands of residents and farmers.
The crash has stalled this vital project. Experts are reassessing safety standards in a bid to prevent similar incidents. Needless to say improving safety measures will not only speed up the process but save many more lives in the future. The SLBC remains an integral system for the growth plan of Telangana.
The Rescue operation status and ongoing efforts
The rescue operation inside the SLBC has continued for over 11 days. Combined efforts by several agencies and rescue teams are underway to search for the trapped workers. It’s still a complicated and rocky situation.
The conveyor belt system is among the recent efforts that have been restored. This network is crucial for transporting debris and supplies. Teams are also employing Ground Penetrating Radar (GPR) technology to find trapped workers. The National Geophysical Research Institute (NGRI) has been part of this initiative.
| Rescue Operations | Description | Status |
| Conveyor Belt Repair | Restored to expedite debris removal | Operational |
| Ground Penetrating Radar (GPR) | Technology used to detect buried workers | Ongoing Analysis |
| Dewatering Process | Removing accumulated water from the tunnel | Progressing Swiftly |
| Desilting & Machine-Cutting | Excavating identified areas | Active |
The SLBC accident has proven to be one of the most challenging rescue operations in recent times. Officials are trying all possible measures to reach the trapped workers.
Challenges Faced in the SLBC Tunnel Rescue Operation
Rescue teams are facing numerous challenges while attempting to save the trapped workers. The accident site’s depth and complexity make rescue efforts difficult.
Water inflow from above and sides of the tunnel is causing additional delays. Removing debris is also a slow process due to the narrow passages. Experts are still determining the exact status of the trapped workers.
| Challenges | Description |
| Water Inflow | Continuous seepage from above |
| Limited Access | Narrow passages and debris blocks |
| Communication Issues | No contact with trapped workers |
| Uncertain Worker Status | Efforts to locate individuals |
Despite these difficulties, officials are determined to reach the trapped workers as soon as possible.
Technologies Used in SLBC Tunnel Rescue Operation
Authorities are utilizing advanced technologies to aid the rescue mission. The SLBC accident has highlighted the need for improved technologies.
- Ground Penetrating Radar (GPR): Used for detecting objects or persons buried beneath the debris.
- Conveyor Belt System: Repaired to facilitate debris removal and speed up operations.
- Dewatering Machinery: Deployed to prevent further water accumulation.
- Tunnel Boring Machine (TBM): Originally used for construction, now used for excavation.
These technologies are critical for a successful rescue operation. Authorities are considering the use of robotic devices to assist with the rescue efforts.
Conclusion: The Way Forward for SLBC Tunnel Safety
The SLBC Tunnel accident has drawn attention to the importance of worker safety. Ensuring proper safety protocols and utilizing advanced technology are essential. Authorities are focused on completing the rescue mission successfully.
The SLBC project remains crucial for Telangana’s growth. Authorities must now focus on improving safety measures and ensuring that such tragedies do not happen again. Better technology, improved protocols, and rigorous inspections will be essential for the future of this project.
The incident is a lesson for all large-scale infrastructure projects. Safety must always remain a priority. The Tunnel must continue its progress with enhanced safety measures to fulfill its purpose.
Frequently Asked Questions (FAQs) About SLBC Tunnel Accident
- What is the SLBC Tunnel?
The SLBC Tunnel stands for Srisailam Left Bank Canal Tunnel. It is a major infrastructure project aimed at improving water supply in Telangana.
- What caused the SLBC Tunnel accident?
The accident happened due to a roof collapse inside the tunnel. It occurred 14 kilometers deep into the SLBC on February 22, 2025.
- How many workers are trapped in the Tunnel?
A total of eight workers are trapped. Their status remains unknown as rescue efforts continue.
- What rescue methods are being used?
Rescue teams are using Ground Penetrating Radar (GPR), conveyor belts, dewatering machinery, and desilting tools to reach the trapped workers.
- Why is the SLBC Tunnel important?
The Tunnel is essential for providing reliable water supply to various parts of Telangana. It supports both urban and agricultural water distribution.
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