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Slotted Tube Friction Rock Bolt , Split Set Bolt For Coal Mine / Underground Support

Brand Name:	HLDRILL
MOQ:	10PCS
Price:	Please contact us
Payment Terms:	T/T
Supply Ability:	3000 PCS Per month

Detail Information

Product Description

Detail Information

Place of Origin:

CHINA

Certification:

ISO9001

Product Name:

Slotted Pipe Friction Anchor Bolt

Product Type:

Rock And Soil Anchoring Support Component

Structural Features:

Slotted Pipe Body, Friction Anchoring

Anchoring Method:

Immediate Anchoring, No Anchoring Agent Required

Material:

High-strength Alloy Steel Pipe

Performance Characteristics:

High Adaptability, Quick Installation, High Conformity To Surrounding Rock

Applicable Scenarios:

Mine Roadways, Tunnel Engineering, Slope Support, Temporary Support

Product Advantages:

Immediate Load-bearing Capacity, High Construction Efficiency, Wide Applicability, Safe And Reliable

Packaging Details:

Wooden Box

Highlight:

Friction Rock Bolt

Slotted Tube Rock Bolt

Coal Mine Split Set Bolt

Product Description

Slotted Tube Friction Rock Bolt | Immediate Anchoring & High Adaptability

Slotted pipe anchors, also known as open-type anchors or split set bolts, are full-length friction anchors used in mining and tunnel support applications. These innovative support systems achieve reliable anchoring through pressure and friction between the anchor body and borehole wall, eliminating the need for resin or cement cartridges. Installation provides immediate anchoring and load-bearing capacity, making them a widely used active support solution in coal mines, metal mines, tunnels, and slope protection projects.

Structural Design

Constructed from high-strength cold-rolled steel strip through precision rolling and welding processes
Cylindrical rod body featuring a longitudinal slit structure for optimal compression
Tapered guide head at one end for smooth and easy insertion into boreholes

Working Principle

Anchor bolt diameter is slightly larger than the borehole diameter for secure fit
Forcibly driven into borehole using rock drills or specialized anchor bolting machines
Slotted pipe compresses and contracts, generating continuous elastic tension
Forms full-length friction anchor with borehole wall for maximum stability

Core Advantages

Quick Installation: Direct insertion without mixing or hardening requirements
Instant Anchoring: Provides immediate support upon installation
Full-Length Anchoring: Entire rod under load for reliable support distribution
High Adaptability: Suitable for soft rock, fractured formations, and coal seams
Vibration Resistance: Enhanced stability with increased surrounding rock deformation
Cost-Effective: Low material cost with high construction efficiency

Application Scenarios

Roof and sidewall support in coal mine underground roadways
Roadway support in metal and non-metal mining operations
Initial and temporary tunnel support systems
Slope reinforcement and foundation pit support
Support in areas with fractured surrounding rock, soft rock, and complex geological conditions

Technical Specifications: Outer diameter 45mm, seam width 10-20mm

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