Pula Subbaiah Veligonda Tunnel No. 2

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Location

Andhra Pradesh, India

Scope of Supply

10.0 m (32.8 ft) Double Shield TBM, Continuous Conveyor, Cutters, Spares, Field Service

Tunnel Length

19.2 km (11.9 mi)

Ground Condition

Quartzite, Shale, Phyllite

 

Shielded TBM Overcomes Fractured
Rock in Remote Indian State

  • The project includes the longest continuous conveyor system Robbins has ever provided
  • Crews utilized probe drilling and pre-grouting to get through significant fracture zones
  • Machine achieved a best daily advance for TBM tunneling in India: 36.6 m (120 ft)
  • The tunnel will provide irrigation and drinking water to arid areas of Andhra Pradesh