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Self Drilling Anchor Rock Bolt With Integrated Drilling Grouting Anchoring Full Matching Accessories And Customized Sizes For Ground Stabilization

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Self Drilling Anchor Rock Bolt With Integrated Drilling Grouting Anchoring Full Matching Accessories And Customized Sizes For Ground Stabilization

Name: Self Drilling Anchor Rock Bolt With Integrated Drilling Grouting Anchoring Full Matching Accessories And Customized Sizes For Ground Stabilization
Brand: HLDRILL
Price: 1 USD

China Self Drilling Anchor Rock Bolt With Integrated Drilling Grouting Anchoring Full Matching Accessories And Customized Sizes For Ground Stabilization factory

Certification : ISO 9001 Certified

Material : High tensile alloy steel

Brand Name : HLDRILL

Thread types : R thread ( R25 , R32 , R38 , R51 ) and T thread ( T30 , T40 , T52 , T76 , T103 , T127 , T150 )

Price : Please contact us

Packaging Details : Wooden Boxes , Cardboard Boxes

Grouting method : High pressure grout injection

Service life : Long service life with low maintenance

Delivery Time : 7-15 Days

Weight : Light weight single unit

Supply Ability : 3000 PCS Per month

Installation flexibility : Arbitrarily cut on site , coupled to extend depth

Payment Terms : T/T

Construction speed : 40% - 60% faster than traditional rock bolts

Place of Origin : CHINA

Surface treatment : Hot dip galvanized anti corrosion coating

MOQ : 10PCS

Drill bit type : Tungsten carbide cross bits and button bits

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Self Drilling Anchor Rock Bolt With Integrated Drilling Grouting Anchoring Full Matching Accessories And Customized Sizes For Ground Stabilization

Premium self drilling anchor rock bolt integrating drilling, grouting, and anchoring for fractured rock, loose soil, and collapsing borehole conditions. Features R / T thread hollow anchor bar, full matching accessories, and customizable sizes for underground mining, highway tunnels, wind power slopes, and micropile foundation projects worldwide.

Traditional solid rock bolts face critical construction bottlenecks in broken strata : borehole collapse after drilling, separate three step workflow (drilling grouting anchoring) , insufficient grouting compactness, and low overall anchorage force — leading to frequent construction delays and safety risks.

Self Drilling Anchor Rock Bolt With Integrated Drilling Grouting Anchoring Full Matching Accessories And Customized Sizes For Ground Stabilization

Core Working Principle

Unlike split type rock bolts requiring pre drilled holes, self drilling anchor rock bolts use hollow fully threaded steel bars as both drill rods and permanent anchor bodies:

Install sacrificial alloy drill bit at the front end ; connect drill rig to drive the system through rock, soil, pebble, or weathered strata
No need to pull out the bar after reaching design depth ; high pressure grout injected through hollow inner channel fills rock fractures and voids
Full external thread maximizes bonding contact area with cement grout , forming seamless reinforcement between anchor bolt and rock mass
Matching bearing plate and lock nut transfer surrounding rock pressure evenly , enabling continuous ground stabilization

This one piece design eliminates borehole collapse risk in fractured zones , soft clay , and mixed fill layers — solving major challenges for global tunnel and mining teams.

Complete System Components Specifications

Standard self drilling anchor rock bolt assembly includes six matched supporting parts, customizable to regional engineering standards ( EU EN, ISO, Australia AS, North America ACI ) :

Component	Specifications
Hollow Threaded Anchor Bar	R thread (R25, R32, R38, R51) and T thread (T30, T40, T52, T76, T103, T127, T150); high tensile alloy steel with quenching heat treatment ; optional hot dip galvanized anti corrosion coating
Sacrificial Drill Bit	Tungsten carbide drill bits (cross bits and button bits) for hard rock and soft soil formations
Coupler Sleeve	Threaded connector for extending anchor bar length in deep micropile, foundation, and tunnel applications
Bearing Plate	Domed / flat high strength steel plate to disperse surface pressure and prevent nut sinking
Lock Nut	Matching thread nut for fast tightening and instant primary support
Centralizer	Auxiliary accessory to maintain anchor bar centering for uniform grout wrapping

All sizes support OEM length cutting, surface anti rust customization, and mixed bulk shipment for global engineering tenders.

Competitive Advantages

Ultra High Construction Efficiency

Eliminates separate drilling machine withdrawal, grouting pipe placement, and casing protection steps. Field tests show 40 - 60% faster single hole construction speed compared to traditional rock bolts, reducing labor and machinery costs.

Full Geological Adaptability

Ideal for tough ground conditions: fractured fault zones, weathered rock, silt soft soil, pebble conglomerate, loose fill slopes, and karst broken rock mass. Widely used in tunnel portal excavation, coal mine roof reinforcement, and slope anti-sliding projects.

Full Length Pressure Grouting

Grout extrudes from borehole bottom upward under pressure, fully filling rock cracks without air voids. Continuous external thread creates strong mechanical occlusion, significantly improving ultimate pull out force.

Flexible Installation

Anchor bars can be cut on site and coupled to extend depth freely. Lightweight design fits narrow underground mine laneways, small municipal foundation pits, and mountain landslide emergency sites.

Low Maintenance Long Service Life

Anti corrosion surface treatments resist groundwater, acid rock leachate, and coastal salt fog. Integrated anchoring structure prevents loose deformation under rock creep pressure, reducing inspection and maintenance frequency.

Self Drilling Anchor Rock Bolt With Integrated Drilling Grouting Anchoring Full Matching Accessories And Customized Sizes For Ground Stabilization Images

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