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On the Delhi-Mumbai railway track, between Dahod and Godhra, a cutting of 1041 m length, and 23 m maximum depth exists. Due to fractured rocks in the deep cutting reach, the strata was collapsible and had given trouble and obstructed the heavy train traffic.
Rock bolts of 25 mm diameter, and 3 m in length were inserted by drilling. Inclined, horizontal and vertical holes were drilled in the jointed rocks using cement grout capsules, to connect the jointed rock. Nearly 40 m of rock bolts were used to connect the jointed rocks.
The shotcreting, 100 mm thick in two layers with 100 mm x 100 mm, 12 gauges welded steel wire mesh and 50 mm thick was done covering 15017 sq. m surface area on both sides of the deep cutting.
HSBN net procured, from Garware Wire Ropes was fixed in 16795 sq. m area after rock bolting in low height areas, on either end of the cutting portion to arrest the fall of the boulder. This was a very busy and electrified rail track, and work had to be carried out strictly in the power block periods only.