Case Study 1: Koshi Riverbank Protection Project, Sunsari District

Client: Government of Nepal (Department of Water Resources & Irrigation)
Contractor: Nepalese Civil Engineering Consortium
Chinese Machine Used: Double-Twist Gabion Weaving Machine (Model: GT-4.0, 415V/50Hz compatible)

Challenge:

Severe riverbank erosion along the Koshi River threatened agricultural land and villages during monsoon floods. Importing pre-made gabions was costly and logistically slow.

Solution & Machine Role:

• The contractor purchased a Chinese double-twist machine to produce gabion mesh locally (spec: 80x100mm mesh, 2.7mm PVC-coated wire).

• Machine Performance:

  • Operated 10 hours/day under Nepal’s grid instability (voltage fluctuations: 360V–440V), supported by an external stabilizer.

  • Output: 30–35 m²/hour (6,000+ m² produced in 8 weeks).

  • Double-take-up system allowed continuous production during spool changes.

• Local Impact:

  • Trained 5 Nepali operators (basic maintenance included).

  • Reduced project cost by 18% vs. importing gabions.

Outcome:

5.2 km of riverbank reinforced before monsoon. Erosion reduced by >70% post-floods.

Case Study 2: Kathmandu Outer Ring Road Slope Stabilization

Client: Nepal Roads Authority (DoR)
Contractor: Sino-Nepal Infrastructure JV
Chinese Machine Used: Semi-Automatic Gabion Loom (Model: XG-200, altitude-optimized)

Challenge:

Stabilizing landslide-prone slopes along a new highway section near Kathmandu (1,400m altitude). Tight deadlines demanded on-site production.

Solution & Machine Role:

• Machine installed in a temporary site factory.

• Produced custom-sized gabion mattresses (100x120mm mesh, 2.2mm Galfan wire).

• Key Adaptations:

  • Dust-proof electrical cabinets (IP54) handled construction-site debris.

  • PLC-controlled length counting (±0.5% accuracy) minimized wire waste.

  • Operated 24 days non-stop (maintenance: 1 breakdown for bearing replacement).

• Logistics Advantage:

  • Saved $15,000/month in transport vs. shipping gabions from India.

Outcome:

Completed 8,500 m² of slope protection on schedule. Structure integrity passed DoR inspections.

Case Study 3: Gandak Irrigation Canal Rehabilitation, Nawalparasi

Client: FAO Nepal (UN-funded project)
Contractor: Local NGO Cooperative
Chinese Machine Used: Portable Gabion Weaving Unit (Model: Mini-Twist MT-100)

Challenge:

Repairing eroded canal sections in a remote area with limited electricity (solar/diesel hybrid power). Low technical skill availability.

Solution & Machine Role:

• Deployed a compact Chinese machine powered by 8kVA generator.

• Produced 60x80mm mesh (2.0mm PVC-coated wire) for small gabion sacks.

• Simplified Workflow:

  • 1-day operator training (basic threading, HMI operation).

  • Manual spool loading (no crane needed).

  • Output: 15 m²/hour (sufficient for daily repair targets).

• Community Impact:

  • Employed 12 local workers (50% women).

  • Machine still used 3 years later for maintenance.