Kaconda Tunnel 431

Jet grouting work in the Kaconda 431 Tunnel contained approximately 3,000 diagonal vertical drillings and grouting, using the jet grouting method along all the tunnel routes at different angles and depths with height limitations. The purpose of the drilling is to stabilize the sandy soil in the tunnel's walls and serve as an intermediate stage, for further excavation and deepening the ground level inside the tunnel, to the final and planned level.