Cyberabad, Telangana, India | Telangana State Industrial Infrastructure Corporation Limited (TSIIC)
Madhapur of Cyberabad Zone of TSIIC, a part of Hyderabad Knowledge City which falls under Industrial Area Local Authority has grown phenomenally in the last few years with many new offices / buildings coming up there. Many more buildings are under different stages of completion with noteworthy T-Hub’s iconic building (T-Hub – a Government of Telangana’s initiative for fostering innovation ecosystem) under advanced stage of completion. To meet the fast increasing demand of better connectivity for the increased traffic, Telangana State Industrial Infrastructure Corporation Limited (TSIIC) has recently constructed a new carriageway of around 850 meter connecting internal roads of Hyderabad Knowledge City with the Old Mumbai Highway joining the same adjacent to Bio-diversity Park.
This new road was constructed by drilling the hillock to create a passage for the road. Now, to mitigate the hazard for the carriageway users from loose boulders on the hilltop and rock slope falling on to the carriageway, TSIIC has decided to take up slope stability and safety works.
To reduce the risk of falling rocks on to the newly constructed Carriageway, TSIIC appointed IIT, Hyderabad to finalize a suitable scheme. TechFab India suggested a solution for Rockfall Protection & GeoHazard Mitigation based on the recommendation of IRC Highway Research Board Special Report 23 on ‘State of the Art: Design and construction of rockfall mitigation systems’ which was finally adopted. The solution consisted of rock bolting, rockfall netting, and cable wire rope at edges, top, bottom, and diagonals.
This solution was provided at all locations except the severe areas with overhangs. Only for the severe areas with overhangs, rock bolting, rockfall netting, and rhomboidal wire rope panels have been provided. A Rockfall Protection Embankment also provided at the toe of the slope. The rockfall protection embankment consists of a 3m high toe gabion wall with a vertical face towards the road and a trapezoidal section towards the cutting. This trench formed by the trapezoidal section towards the slope cutting also act as a rock trap ditch for any debris that may slide along the nettings.
The new 850 m carriageway constructed by TSIIC passed through a hillock created by drilling. Loose boulders and unstable rock slopes posed a serious hazard to road users, making slope stabilization and rockfall protection essential for safety.
Loose boulders on hilltops threatening to fall onto the carriageway.
Steep cut slopes created during road construction.
Severe areas with overhangs requiring specialized treatment.
Need for a solution that ensured long-term safety without disrupting traffic.
Based on IIT Hyderabad’s recommendations and IRC Highway Research Board guidelines, TechFab India proposed:
Rock bolting to stabilize unstable rock masses.
Rockfall netting with cable wire ropes at edges, top, bottom, and diagonals.
Rhomboidal wire rope panels for severe overhang areas.
Rockfall protection embankment at the toe of slope:
3 m high gabion wall with vertical face towards road.
Trapezoidal section towards slope acting as a rock trap ditch for debris.
Rock bolting anchors unstable rocks, preventing detachment.
Netting and wire rope panels catch falling debris and redirect forces safely.
Gabion toe wall and trap ditch intercept sliding rocks before reaching the road.
Together, they provide a multi-layered protection system ensuring safety for commuters.
Comprehensive safety against rockfall hazards.
Cost-effective compared to rigid concrete structures.
Flexible and durable, adapting to slope conditions.
Environmentally sensitive, minimizing disturbance to natural terrain.
Designed in line with IRC Special Report 23 standards.
Rockfall protection works were successfully completed.
The carriageway is now safe for commuters, with reduced risk of rockfall incidents.
Client satisfaction with durability, performance, and adherence to safety standards.
Enhanced connectivity for Hyderabad Knowledge City and surrounding developments.
TechSlope Mesh
TechRhombus HRC (High Tensile Rolled Cable Net)
TechFab Metal Gabion
