Roadway Support System

- High Safety: Effectively controls rock deformation, prevents sudden collapses, and ensures the safety of underground workers and equipment.

- Excellent Support Effect: Bolts and cables penetrate deep into the rock mass, combining deep stable rock with shallow loose rock to form an integral load-bearing structure.

- Cost-Effective: Saves significant amounts of steel and concrete compared to traditional masonry, significantly reducing support costs.

- High Efficiency: High degree of mechanization and fast installation speed allow it to keep pace with the excavation face, shortening the construction period.

- Strong Adaptability: Suitable for various geological conditions (hard rock, soft rock, fractured zones). Additionally, U-steel supports are yieldable, adapting to large rock deformations.

- High Space Utilization: Bolts and cables are installed mainly within the rock, and the supports occupy minimal cross-sectional space, improving ventilation efficiency and transportation capacity.

Roadway support systems are widely used in underground resource extraction and linear engineering construction:

- Coal Industry: Mining roadways, driving roadways, chambers, and intersections in underground coal mines.

- Metal & Non-Metal Mines: Vertical shafts, inclined shafts, and stope roadways in iron, gold, copper mines, etc.

- Transportation Tunnels: Highway and railway tunnels (especially in weak surrounding rock sections).

- Municipal Engineering: Urban subways, underground utility tunnels, and civil air defense projects.

- Water Conservancy & Hydropower: Construction and permanent support of water diversion tunnels and diversion tunnels. 

Rock Bolts: 20MnSi (High-strength alloy structural steel), Q235 (Carbon structural steel). Diameter: Φ16mm, Φ18mm, Φ20mm, Φ22mm, Φ25mm, Length: 1.6m - 2.4m (Commonly used), Thread: Left-hand / Right-hand thread.

Cable Bolts: High Strength Low Relaxation Steel Strand, Structure: 1×7 or 1×19, Diameter: Φ15.24mm (15.2mm), Φ17.8mm, Φ21.6mm, Length: 6m - 15m (Customized according to roadway depth).

The roadway support system mainly consists of the following major product categories: 

- Rock Bolts: 

  - Resin Anchored Bolts: Fast installation speed and high anchoring force. 

  - Split Set Bolts: Anchored by friction, suitable for soft rock formations. 

  - Threaded Steel Bolts: High strength, capable of applying pre-stress. 

- Cable Bolts: Composed of multiple high-strength steel wires or strands. With their greater length, they are used for reinforced support in deep or large-span roadways. 

- Anchor Agent / Resin Capsules: Used in conjunction with rock bolts. Available in ultra-fast, fast, and medium-speed setting types, they bond the bolt to the borehole wall. 

- W Steel Strips / Steel Bands: Connect individual bolts to form an integrated support structure, expanding the load-bearing range of the bolts. 

- Metal Supports: 

  - U-Steel Supports: Possess yieldable properties to adapt to rock mass deformation. 

  - I-Beam Supports: High strength, suitable for roadways with large cross-sections. 

- Steel Mesh: Laid on the rock surface to prevent small rock fragments from falling (spalling).

- Shotcrete: Used in combination with steel mesh and bolts (Bolt-Mesh-Spray Support) to seal the rock and prevent weathering. 

Packaging：

1) All the products are packed with seaworthy packing.
2) Customer's special requirement for packing can be satisfied.
3) Air freight, sea freight and truck freight are all available.