Teico Overseas LLC

Project We Are Proud Of

Slope Protection Works for Hay Al Turath - Ghubrat Nizwa Road

Comprehensive Slope Stabilization for a Strategic Mountain Corridor

The Hay Al Turath - Ghubrat Nizwa Road required extensive slope protection and stabilization works to ensure the safe passage of vehicles through steep, geologically variable terrain.

TEICO delivered a complete slope protection package, integrating reinforced mesh, cable netting, rockfall barriers, shotcrete, and structural anchoring to secure the corridor against long-term surface degradation and rockfall hazards.

Executed from August 2014 to August 2015, the project strengthened one of the region's important transport links by combining engineering accuracy, efficient work sequencing, and durable protection systems.

Project Overview

The project involved stabilizing multiple slope sections along the mountain road, each exhibiting different rock mass conditions and exposure levels. The scope included consolidation of fractured rock zones, protection against rockfall, and surface erosion control to ensure long-term road safety and uninterrupted traffic flow.

To address these concerns, the client requested a full evaluation to determine the current stability state, identify potential failure modes, and outline a reliable, cost-effective protection strategy.

Project Details

Project: Slope Protection Works for Hay Al Turath - Ghubrat Nizwa Road
Client: Sultanate of Oman - Ministry of Transport & Communications
Scope: Slope protection and consolidation works
Quantities Executed:
- 20,060 m² Reinforced Wire Mesh
- 1,440 m² Cable Netting
- 4,200 m² Rockfall Barrier
- 30,067 m² Shotcrete
- 2,076 lin.m Rock Dowels
- 9,254 m² Concrete Lining
- 910 m³ Gabions
- 242,625 m³ Excavation, Light Cleaning & Scaling

Challenges Identified

Steep, High-Risk Cut SlopesMultiple sections required stabilization across varied heights and rock qualities.
Active Rockfall and Unstable BlocksFractured zones and loose blocks posed direct hazards to passing traffic.
Large Workfront with Varying ConditionsEach slope segment required a tailored stabilization method due to non-uniform geology.
Access and Safety ConstraintsWork at height, drilling operations, and robotic shotcrete application demanded strict safety coordination.
Need for Long-Term DurabilityThe road required protection systems capable of withstanding weather cycles, runoff, and continuous exposure.

Solution Implemented:

1. Reinforced Mesh & Cable Netting

•Installed 20,060 m² of reinforced wire mesh to secure weathered rock surfaces.
•Applied 1,440 m² of cable netting in areas with larger fractured blocks requiring higher containment strength.

2. High-Energy Rockfall Barrier

•Installed 4,200 m² of rockfall barriers rated up to 2,000 kJ to intercept falling rocks before reaching the roadway.

3. Shotcrete Surface Protection

•Applied 30,067 m² of shotcrete using robotic spraying for consistency, durability, and safe execution on steep faces.

4. Structural Anchoring & Dowels

•Drilled and installed 2,076 lin.m of rock dowels to consolidate unstable rock masses and improve overall slope stability.

5. Concrete Lining & Gabion Structures

•Constructed 9,254 m² of concrete lining for berm protection, drainage paths, and surface durability.
•Installed 910 m³ of gabions for toe support and erosion control.

6. Excavation, Cleaning & Scaling

•Performed 242,625 m³ of excavation, cleaning, and scaling to remove loose rock and prepare slope surfaces for safe installation.

Project Outcomes: Slope Protection Works for Hay Al Turath - Ghubrat Nizwa Road

Significant Improvement in Road Safety

The combination of mesh systems, dowels, shotcrete, and rockfall barriers drastically reduced rockfall risks along the corridor, improving safety for commuters and long-distance transport.

Stable Slopes Across a Large Mountain Section

With over 20,000 m² of mesh and more than 30,000 m² of shotcrete installed, the slopes now demonstrate improved structural consistency and resistance to weather-driven deterioration.

Enhanced Protection Against Major Rockfall Events

The 2,000 kJ barrier system provides a reliable defense against high-energy rockfall, safeguarding vehicles and infrastructure along high-exposure segments.

Durable, Long-Term Surface Protection

Concrete lining, robotic shotcrete, and cable netting created a multilayered barrier against erosion, allowing the slopes to withstand long-term environmental stresses.