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Final phase of Bowbazar Metro begins with geo-physical survey to address safety concerns

  • KMRCL begins geo-physical survey to assess soil behavior and tunnel stability in Bowbazar for safe metro operation
  • Survey results will guide metro speed adjustments to minimize vibration impact and ensure safety of surrounding buildings
  • Geo-physical survey data will be used for long-term monitoring and maintaining operational stability of Bowbazar metro

07 Jan 2025

Final phase of Bowbazar Metro begins with geo-physical survey to address safety concerns

The Kolkata Metro Rail Corporation Limited (KMRCL) has moved into the final phase of its Bowbazar underground metro project, marking a significant step toward completion with the commencement of a geo-physical tomographic survey. This follows the successful completion of track laying and signaling. The primary aim of the survey is to assess how the vibrations from metro trains will affect the surrounding soil, the tunnel structure, and the nearby buildings. The data gathered will provide essential information on soil behavior and vibration patterns, which is crucial for determining the safety and stability of the metro operations.

The geo-physical tomographic survey is an in-depth process that will examine the soil's structural properties, including its ability to absorb or transmit vibrations caused by the metro’s movement. This process is especially important in Bowbazar, where there have been past incidents of subsidence and damage to buildings above ground during construction. The survey will provide detailed readings on how much vibration the tunnel and surrounding earth can safely handle, allowing engineers to identify and mitigate any risks before the metro line becomes operational.

In addition to analyzing the soil structure, the results of the survey will be used to assess the specific operational parameters of the metro, including the speed at which the trains should run to minimize the impact of vibrations. By adjusting these parameters, KMRCL aims to ensure that both the tunnel infrastructure and the buildings above ground remain stable and unaffected by the metro’s vibrations. This data will also contribute to long-term monitoring protocols once the metro is in operation, ensuring continued safety for the Bowbazar area.

The survey’s findings are expected to play a pivotal role in the overall safety management of the metro project, particularly as the line will connect Sealdah to Esplanade. As part of the comprehensive assessment process, KMRCL is taking extensive precautions to prevent any adverse effects on the surrounding environment. The final phase, which includes the geo-physical tomographic survey, is a crucial step toward ensuring that the metro operates safely and efficiently, addressing both operational concerns and public safety.

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Final phase of Bowbazar Metro begins
KMRCL begins geo-physical survey to assess soil behavior and tunnel stability in Bowbazar for safe metro operation





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