Soil exploration of major bridges for the new third line between Rampurhat to Murarai

Eatsren Railways

West Bengal

SERVICE CATEGORYGeotechnical, Laboratory Testing SectorRailway Engineering

Eastern Railway had planned for the new 3rd line work between Rampurhat and Murarai in the district of Birbhum, encompassing a distance of 31 km as DFCC corridor for free movement of minerals between Jharkhand and West Bengal.

The Proposed new rail track of 31 km from Rampurhat to Murarai of Eastern Railway track belongs to Birbhum district in West Bengal, which will traverse the Nalhati area and will connect the region directly to Murarai.

The project stretch passes through Swadhinpur, Nalhati, and Chatra in the district of Birbhum, West Bengal. It passes through mostly rural portions with plain terrain. The services cover the subsurface investigations conducted at all Eight Major Bridges for proposed New Line connection with Rampurhat – Murarai containing data collected during the fieldwork and laboratory testing on collected soil samples.

The tasks performed during the project work are as follows

  • Exploration of surface material and subsoil conditions of the site and provision of general Data relating to the project site.
  • Field identification of soil and rock types, if present, with depth, records of their occurrence and location of their structural discontinuities.
  • Field Standard Penetration Tests to determine the natural bearing resistance of the subsoil for the purpose of design.
  • Collecting disturbed and undisturbed soil samples for visual examination and for carrying out laboratory tests on selected samples to determine the natural, physical and relevant engineering properties of the soil.
  • Drilling in rock in weathered and in hard rock, obtain rock cores of NX size by diamond core drilling method using double tube core barrels, determination of material characteristics & laboratory tests for determining engineering properties of existing rock, i.e., unconfined compressive strength, water absorption etc.
  • Chemical analysis of soil and water samples.
  • Evaluation of ground water levels in the borings.
  • Documentation and evaluation of all results in a soil investigation report using SI units after the completion of field work and laboratory test.