Cuttable Combination Rock Bolt is an integrated ground support system combining mechanical point anchoring and full-length grouting anchorage for underground engineering projects.
CT-Bolt combines two support mechanisms in one bolt system: immediate mechanical anchoring and long-term grouted reinforcement.
The expansion anchor head is activated by pre-tensioning, forming a reliable point anchorage with the borehole wall immediately after installation.
After installation, grout can be injected through the bolt system to fill the gap between bolt and borehole, creating a permanent full-length anchoring structure.
In resin anchored mine roadway support, ordinary strand cable bolts may not always deliver stable anchorage performance. Poor resin mixing, eccentric cable position, weak bonding, and uneven load transfer can reduce support reliability and increase project risk.
Insufficient mechanical interlocking between the smooth strand and the resin lead to suboptimal load-bearing capacity.
Conventional cables fail to effectively shred resin capsules, resulting in unmixed resin "globs" and weak chemical bonds.
Without centering mechanisms, cable bolts often rest against the borehole wall, preventing a uniform resin annulus.
Inadequate bonding surface and poor resin quality significantly increase the risk of premature cable pull-out failures.
Localized stress concentrations due to poor anchoring can cause individual strands to fail under dynamic geological pressure.
Failure of initial support leads to costly secondary reinforcement work and increased safety hazards for personnel.
These challenges are exactly why bulbed cage cable bolts are used to improve resin mixing, cable centering, mechanical interlocking, and anchorage stability.
See the SolutionNot all cable bolts perform the same in resin anchored support systems. When anchorage force, resin mixing quality, and cable centering matter, a bulbed cage cable bolt provides a more reliable solution than an ordinary strand cable bolt.
| Comparison Feature | Cage Mining Cable Bolt | Ordinary Strand Cable Bolt |
|---|---|---|
| Anchorage Section | Expanded Bulbed Cage Structure | Standard Smooth Strand |
| Resin Mixing | Highly Even & Thorough | Uneven & Incomplete |
| Cable Centering | Self-Centering in Borehole | Eccentric (Leaning) |
| Anchorage Force | High Mechanical Interlock | Lower Friction-Based |
| Load Distribution | Evenly Transferred | Concentrated Stress |
| Suitable Conditions | Complex/Fast Anchoring | General/Low Stress |
This is why cage mining cable bolts are increasingly preferred in resin anchored roadway support, broken surrounding rock, dynamic pressure roadways, and reinforcement projects.
Discover Working PrinciplesCage mining cable bolts improve resin anchored support performance through cable centering, better resin mixing, stronger mechanical interlocking, and more uniform load distribution.
Ensures the cable remains perfectly centered within the borehole, creating a consistent resin annulus for optimal bonding strength.
The cage structure acts as a static mixer, ensuring complete chemical reaction of resin capsules during installation.
Multiple bulb geometries create a physical 'key' within the resin, significantly increasing resistance against axial displacement.
Distributes tensile stress more evenly across the entire anchorage length, preventing localized rock strata failure.
We provide cage mining cable bolt solutions for resin anchored mine support, fast roadway support, dynamic pressure roadways, and customized support systems.
High-tensile steel cable with standard bulb spacing for universal underground support applications.
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Engineered with increased cage frequency to provide maximum load capacity in soft rock environments.
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Optimized for rapid installation systems with superior mixing characteristics for fast-setting resins.
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Specifically designed to absorb energy and maintain integrity under seismic or high-pressure conditions.
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Long-length cable solutions providing deep reinforcement for highly fractured or unstable strata.
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Bespoke engineering based on site-specific technical parameters and unique geological challenges.
Request Custom SolutionCage mining cable bolts can be supplied with different cable diameters, strength grades, bulbed cage structures, breaking loads, and lengths to match resin anchored roadway support, broken ground, dynamic pressure roadways, and project-based reinforcement requirements.
| Parameter | Value | Application Meaning |
|---|---|---|
| Nominal Cable Diameter | 15.24 / 17.8 / 22 mm | Determines cross-sectional area and basic tensile capacity for different rock weights. |
| Strength Grade | 1770 / 1860 / 2060 MPa | High-tensile steel grades ensuring structural safety in deep mining environments. |
| Ultimate Breaking Load | ≥265 / 353 / 520 kN | The critical limit for support failure prevention during massive ground movement. |
| Bulbed Cage Length | 100 mm | Optimized length for resin mixing efficiency within a standard borehole. |
| Bulbed Cage Diameter | 26–28 mm | Ensures proper mechanical interlocking with the resin and borehole wall. |
| Number of Cage Structures | 3–4 pcs | Multiple anchoring points along the bond length for staggered stress distribution. |
| Standard Cable Length | 3–12 m | Customizable to meet specific depth-of-anchor requirements in varying strata. |
| Matching Borehole Diameter | 42–56 mm | Precise clearance sizing for effective resin encapsulation and bolt insertion. |
Based on the weight of the strata to be supported and the bolt density per square meter.
Higher grades (2060 MPa) are reserved for extreme dynamic pressure or tectonic stress zones.
Special "Birdcage" geometry designed to break resin capsules and ensure 100% mixing ratio.
Determined by the location of stable rock layers above the roadway's plastic zone.
Select the optimal anchoring system based on ground conditions, required load capacity, and excavation methodology. All specifications meet ISO standards for mining equipment.
| Specification Parameter | CT-M20 | CT-M22 | CT-GFRP |
|---|---|---|---|
| Material Grade | B500B / Gr 75 | B500B / Gr 75 | Composite |
| Elongation (%) | ≥ 12% | ≥ 12% | ≤ 2% |
| Outer Ø (mm) | 20 mm | 22 mm | 25 mm |
| Thread Pitch | R20/10 | R22/10 | Full Thread |
| Corrosion Prot. | Galvanized/PE | Galvanized/PE | Inherent |
Configure your custom bolt system today. Our engineering team can customize length, thread type, and coating based on your specific geological survey data.
Get Engineering QuoteXINYONGDUO's support systems are engineered for the most demanding mining environments. Our hardware integrates high-tensile steel with proprietary anchorage mechanisms to ensure maximum safety and structural longevity in underground roadways.
Certified Quality
ISO 9001:2015 Compliant Manufacturing
Engineered for superior tensile capacity, providing reliable point anchorage even in challenging geological formations.
Precision-threaded components and consistent resin interaction ensure uniform support distribution across the entire roadway.
Immediate structural engagement post-installation, reducing active convergence and improving immediate safety windows.
Specialized cage designs and expansion mechanisms specifically optimized for fractured and low-integrity rock masses.
Optimized for standard mining drill rigs, reducing cycle times and labor intensity during primary and secondary support phases.
Discuss Your Roadway Support Conditions
Talk to Our Technical TeamOur Cage Mining Cable Bolts require a rigorous 8-step installation protocol to ensure maximum structural integrity and life-of-mine safety. Follow these engineering guidelines for optimal resin-bolt interaction.
Unlike traditional strand bolts, the bulbed cage structure of our cable bolt ensures that the cable remains perfectly centered within the borehole. This creates a uniform resin annulus, preventing eccentric loads and ensuring a 100% reliable chemical bond across the entire anchorage zone.
Maintain strict borehole alignment to prevent excessive shearing forces on the cable during strata movement.
Specific torque and rotation speeds required for the cage to effectively shred and mix resin capsules.
Monitor rock temperature for resin set-time adjustments, essential for high-stress deep mining environments.
Ensure precision seating of the anchorage barrel to prevent slippage during high-tension hydraulic loading.
Verify initial pre-load using calibrated hydraulic tensioners to meet project-specific safety factors.
Every Cage Mining Cable Bolt undergoes rigorous structural validation. We ensure that our products exceed international standards for tensile strength, elongation, and anchorage efficiency through multi-stage laboratory and field testing.
Spectral analysis of the raw steel ensures the precise carbon and manganese levels required for high-toughness underground support.
Breaking load tests verify each batch achieves minimum 1860MPa/1770MPa tensile strength as per ASTM A416 specifications.
Laser measurement of bulbed cage diameter and interval spacing to ensure consistent resin mixing and mechanical interlocking.
Simulated borehole tests measuring the peak load and displacement curves of the anchorage zone in various rock conditions.
Fatigue testing on the barrel and wedge assembly to ensure zero-slippage even under high-frequency dynamic seismic loading.
Full traceability with unique serial numbers for every shipment, accompanied by mill test certificates and inspection reports.
Ordinary strand cables often sit off-center in the borehole, leading to uneven resin coverage and potential "voids" where corrosion or bond failure can start. XINYONGDUO's cage design forces the cable to the center, maximizing surface area contact with the rock strata.
Incoming high-tensile steel wire is tested for ductility and micro-cracks before cage forming.
PLC-controlled cage forming ensures identical bulb height and spacing across the entire production run.
Destructive pull-off tests performed at our ISO-certified facility for every 200 units produced.
A 24-point pre-shipment inspection covers galvanization quality, end-thread precision, and packaging.
Different underground mining projects require different cage cable bolt specifications. We support custom manufacturing based on roadway conditions, resin anchoring requirements, borehole diameter, anchorage length, support depth, load level, and complete system matching.
Custom Cable Diameter
Custom Cable Length
Custom Strength Grade
Custom Cage Quantity
Custom Bulbed Size
Complete System Matching
Our high-performance rock bolt accessories are engineered to adapt to various complex geological conditions, ensuring maximum support stability across diverse underground and surface projects.
Expansion shells and heavy-duty spherical washers designed to handle extreme tension and withstand sudden rock burst impacts.
Domed plates and angle-compensating nuts engineered to distribute heavy loads evenly across uneven tunnel profiles.
GFRP cuttable nuts and composite plates that safely shatter upon TBM cutterhead contact, preventing equipment delays.
Hot-dip galvanized flat plates and protective caps ensuring long-term structural integrity against harsh outdoor elements.
Specialized centralizers ensuring uniform 360-degree grout encapsulation to seal out moisture and prevent long-term corrosion.
Threaded couplers for infinite bar extension in limited spaces, paired with standard hex nuts for quick and secure installation.
Looking for the right accessory combination for your specific site conditions? Connect with our engineering team for customized solutions.
Consult Our EngineersSend us your roadway condition, borehole diameter, anchorage length, required load level, resin capsule requirement, and project quantity. XINYONGDUO can help match suitable cage cable bolt specifications for your resin anchored mine support project.
Direct supply from source manufacturer for cost-effective underground roadway support.
Custom cable diameter, length, strength grade, and bulbed cage structure.
Dedicated engineering guidance for resin anchored roadway support systems.
Full QC support for cable body, bulbed structure, and pre-shipment inspection.
Connect directly with our engineering team to get custom-designed solutions that minimize downtime and cut procurement costs.
