Underground Twin Tunnel Work Triggers Cracks in Sanjauli Buildings, Administration Orders 100-Metre Safety AuditHimachal Pradesh
22 Sept 2026, 10:30 am (31 min ago)· 0

Underground Twin Tunnel Work Triggers Cracks in Sanjauli Buildings, Administration Orders 100-Metre Safety Audit

The construction of the Dhalli four-lane twin tunnel in Shimla has caused fissures in residential structures across Sanjauli Cemetery, prompting the administration to suspend blasting permits and initiate a three-phase survey.

Subterranean excavation for a major highway expansion project has raised safety concerns among residents in Himachal Pradesh's capital. In Shimla, ongoing construction of a twin tunnel along the Dhalli four-lane route has resulted in noticeable cracks appearing on residential structures situated in the Sanjauli Cemetery locality. With hundreds of properties positioned directly above the subterranean work facing potential instability, the district authorities have initiated immediate administrative interventions and comprehensive technical assessments.

Administrative Review and Structural Restoration Framework

Following reports of structural damage, a high-level review meeting was convened under the chairmanship of Shimla Deputy Commissioner Anupam Kashyap. The meeting focused on addressing the distress expressed by local residents and formulating immediate corrective steps. Revenue officials have been directed to conduct physical inspections across the affected belt to catalog every single property requiring structural reinforcement and repairs.

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Under the administrative plan, the infrastructure firm executing the tunnel works will formulate an extensive repair roadmap for all identified properties. To ensure standard engineering practices and structural integrity, officers from the Public Works Department will supervise the restoration work. The rectification will only be certified as complete once these engineers verify and officially clear the quality of work, prioritizing safety and public peace of mind.

Three-Tiered Inspection Across 100-Metre Perimeter

To assess potential structural risks comprehensively, administrative officials decided to inventory and examine all dwellings situated within a roughly 100-metre radius directly above the twin tunnel alignment. This structural evaluation will proceed through three systematic phases.

The first phase will scrutinize buildings situated directly overhead the two individual 11-metre-wide tunnels. The second tier of the survey will evaluate structures positioned over the 20-metre corridor separating the two parallel tubes. Finally, inspectors will examine properties falling within a 30-metre lateral boundary extending from both sides of the twin tunnel network to document all vulnerabilities.

Immediate Suspension of Blasting and IIT Roorkee Consultation

During the official deliberations, National Highways Authority of India (NHAI) officials stated that explosive blasting is not actively taking place for tunnel excavation at present. Nonetheless, as a precautionary measure to safeguard the neighborhood, the district administration immediately suspended the blasting permissions previously granted to the construction firm.

To obtain an independent scientific assessment regarding the ground settlement and structural fissures, the administration formally requested a specialist panel from IIT Roorkee to visit the site. The engineering delegation will examine the fractured buildings, pinpoint the technical causes behind the cracking, and outline mandatory safeguards and engineering modifications required to continue future tunnel construction without endangering surface dwellings.

Site Inspections by Senior Officials and Continuous Surveillance

Initial site visits were conducted by the Additional District Magistrate and the Sub-Divisional Magistrate soon after residents raised alarms regarding the fissures. Subsequently, a wider inspection contingent comprising the Deputy Commissioner, Superintendent of Police, Additional District Magistrate (Protocol), and SDM Shimla Rural visited the Sanjauli Cemetery zone to personally inspect damaged residences and interact directly with the affected families.

The administrative deliberations included Additional District Magistrate (Law and Order) Pankaj Sharma, Additional District Magistrate (Protocol) Gyan Sagar Negi, Sub-Divisional Magistrate Shimla Rural Manjeet Sharma, NHAI Project Director Anand Kumar, and Deputy Manager Sumit Bansal. Representatives from execution agencies, including Gawar Construction Company General Manager Kuldeep Gujral, Bharat Construction Project Manager Sadanand Mohanty, and HR Manager Ravinder Chandel, along with Naib Tehsildars Layak Ram Sharma and B. S. Chauhan from Kala, were also present. The Deputy Commissioner assured local residents that administrative surveillance over the affected houses remains active, emphasizing that public safety and property protection will not be compromised.

Questions & Answers

Why have structural cracks appeared in Sanjauli Cemetery houses?
The cracks emerged due to ongoing underground excavation for the Dhalli four-lane twin tunnel project directly beneath the residential neighborhood.
What perimeter of houses is being inspected by the administration?
Authorities are conducting a comprehensive survey of all structures located within an approximate 100-metre zone directly above the twin tunnel.
How will the three-phase inspection process be carried out?
Inspectors will first assess houses directly above the two 11-metre tunnels, followed by the central 20-metre corridor, and lastly within a 30-metre perimeter on either side.
Who will execute and verify the building repairs?
The construction company will prepare and execute the repair plan, while Public Works Department engineers will inspect and approve the quality of work.
Is explosive blasting still permitted at the tunnel site?
No, the district administration has immediately suspended all blasting permissions previously granted to the construction contractor.
Which institution has been tasked with the scientific inquiry?
A specialized technical panel from IIT Roorkee has been formally requested to investigate the geological causes and prescribe safety protocols.

Comments 2

Rohan Verma@rohan-verma·15m ago

Calling in experts from IIT Roorkee is a good move, at least there will be a scientific investigation.

Karan Malhotra@karan-malhotra·15m ago

Spot on, Rohan. When I visited Dhalli last time, locals were already scared of the blasting, and now houses are actually cracking.

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