CABLES AND TRUSSES

Cable Bolts incorporate much higher strengths than  traditional bolts do, providing a much greater range of flexibility that adjust to the movement of the earth’s strata. 

Cable Bolts are applicable where standard ground support is marginal or inadequate. Common application areas include: tail gates, bleeders, recovery rooms, set-up rooms, head gates, intersections and other mine areas where longevity and additional support is required.

Significant Advancement in Roof Support Technology

• Exclusive bulbing system provides improved resin mixing and anchorage
• Available in passive or post-tensioned systems
• Available in two diameters
• Galvanized strand is available for applications where stand times are greater than one year

The new cable connector system eliminates the waste created when separate barrel and wedge units are provided.

This unique design incorporates the wedges and helps keep them “clean” for maximum installation loads. The cable connector can be loaded to the cable tensile strength without shearing the strand. Our research indicates that the design capacity of the CSS should be limited to the ultimate strength of the cable being used, approximately 30 or 40 tons.

Uncompromising Strength

Our research indicates that the design capacity of the IN-ROOF system should be limited to the ultimate strength of the cable being used (30 tons).

Simplicity - Only Three Basic Components

• IN-ROOF bracket/bolt assembly
• Cable tie rods
• Cable coupler
• Integrated cable wedges in the coupler

SDS Square Head Cable Bolts can be used in every application where traditional cable bolts are used and where standard ground support is marginal or inadequate. Common application areas include: gate roads, bleeders, recovery rooms, set-up rooms, intersections and other mine areas where additional support is indicated.

Added benefits of this cable bolt with its innovative square head indented strand design are improved resin/strand mechanical interlock, eliminated or reduced bulbs, lower hydraulic pressure during insertion and better encapsulation.

The TCB System can be used for primary support and as secondary support in applications where traditional cable bolts are used and enhanced beam building is needed. The TCB System provides compression into the roof and ensures “top-to-bottom” tensioning of the cable, which places the anchorage higher in the roof structure to eliminate “anchorage shock” during loading.

Common application areas include: tail gates, bleeders, recovery rooms, set-up rooms, head gates, intersections and other mine areas where longevity and additional support is required.

Minova leads the way with cable bolt technology that can be installed within development stages.

It incorporates various truss anchor types and two different truss shoe assemblies along with a cable cross member in concert with threaded U-bolts for re-tensioning without requiring hydraulic power, thus making it a very strong and highly flexible system.

Truss systems have evolved and currently many systems incorporate high strength cables as a key component to add flexibility and capacity. One such system is the Minova U-Bolt Hybrid Truss System.

Specifications

• Truss bolts made from 7/8” Grade 75 material
• Cross-members made from 0.6” (270K) low relaxation, 7-strand cable
• Nominal strength of 30 tons
• Hole diameters – 1”, 1-3/8”