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Critical Evaluation on Retention of Fine Sand Through Soil Nailing for Construction of Rail Underpass by Box Jacking—A Case Study

  • Kanwar SinghEmail author
  • Satyendra Mittal
  • P. S. Prasad
  • Kishor Kumar
Conference paper
Part of the Lecture Notes in Civil Engineering book series (LNCE, volume 29)

Abstract

The scope of construction of rail underpass with precast concrete boxes and jack pushing technique has been increased tremendously to maintain uninterrupted flow of rail and road traffic in many Indian metropolitan cities. The project has become more challenging when the construction of one of such underpasses had to go through the two random 12 m high and 2 m thick rubble masonry walls with poorly graded fine sand as a backfilled material. The site is located in zero tolerance zone of Indian Railways where about 200–250 trains move everyday over the tracks. The challenging site conditions demanded a novel ground improvement technique which could have stabilised the box/tunnel face in controlled conditions during box jacking operation with live rail traffic. This paper describes an innovative stepwise de-stabilisation and stabilisation of soil nailing technique which was successfully used first time in the world for construction of three adjacent large size underpasses below the two rail tracks on Old Delhi–Shahadra section near Salimgarh Fort, Yamuna Bazaar, New Delhi, India.

Keywords

Underpass Box jacking Soil nailing Soil stabilisation 

Notes

Acknowledgements

Authors thanks to Director, CSIR-Central Road Research Institute, New Delhi, India for approving and providing the financial support to carry out model study in CSIR-CRRI laboratory. Authors are also thankful to railway engineers Sh. Ajit Singh, Deputy Chief Engineer and Sh. M. K. Kinger, Executive Engineer and Sh. S. P. Singla & Company for assigning a Consulting Project No. CNP-1666.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Kanwar Singh
    • 1
    Email author
  • Satyendra Mittal
    • 2
  • P. S. Prasad
    • 1
  • Kishor Kumar
    • 1
  1. 1.Geotechnical Engineering DivisionCSIR-Central Road Research InstituteNew DelhiIndia
  2. 2.Civil Engineering DepartmentIIT RoorkeeRoorkeeIndia

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