DYWIDAG Cable Bolts for Mining

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Introduction .................................................................................................................. 3

Fields of Application ...................................................................................................... 4

Main Advantages ........................................................................................................... 4

System Description ...................................................................................................... 4

System Components .................................................................................................... 5

Specifications ............................................................................................................... 5

Installation Procedure .................................................................................................... 6

Accessories .................................................................................................................. 6

DYWIDAG Cable Bolts for Mining are used for temporary and semi-permanent rock reinforcement in underground Mining. Rock bolting with prestressing steel cable bolts combines low bolt weight with high load-bearing capacity. The system remains flexible even with larger cable bolt lengths.

Special DYWIDAG Mining Cable Bolts featuring a free length or a threaded anchorage instead of the default barrel and wedge system were developed for challenging ground control works. These bolts allow a tensioning of the system without tensioners.

Contents

Introduction

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■ Ground control for different fields of application - from coal Mining to hard rock Mining

■ Bolting in limited space conditions

■ Reinforcement of roadways and gateways

■ Bolting in the hanging wall of longwall T-junctions

■ Long cable bolts are easily displaceable in limited space

■ High load-bearing capacity at a low weight per meter

■ Flexible bolt lengths

■ Installation using cement cartridges, resin cartridges, cement grout or injection resin

■ DYWIDAG Cable Bolts for Mining are available in three different versions

■ Cable bolt, plain version

■ Cable bolt, with bulbs

■ DYWIDAG Strand Thread Anchors

Fields of Application Main Advantages

System Description

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Characteristics / Type Unit CB15.3 CB15.7 LG18.3Nominal diameter [mm] 15.2 15.7 18.3Nominal diameter [inch] 0.60 0.62 0.70

Cross-section [mm2] 140 150 200Weight [kg/m] 1.09 1.17 1.56

Yield strength Rp0.1 [N/mm2] 1,560 1,640 1,570Tensile strength [N/mm2] 1,770 1,860 1,770Yield load Fp0.1 [kN] 220 251 312Ultimate load [kN] 248 279 354

■ End holding devices ■ Single strand fish hook

■ 7 wire prestressing strand ■ Uncoated, low relaxation strand ■ 1 center wire and 6 outer wires ■ Plain or bulbed version ■ Different customer-specific lengths ■ Greased strands with free lengths available on request

■ Plate ■ Different designs and dimensions available on request

■ Domed cable grip ■ Domed barrel ■ 3 pcs. wedge ■ Optional plastic cap

■ Press sleeve ■ Anchorage for DYWIDAG Strand Thread Anchors ■ Yielding element for large ground deformation or areas prone to rockbursts ■ Thread M30 or DYWI® Drill left-handed R32 or R38 thread plus hex nut

■ Injection and breather tubes ■ Standard versions 13 x 2 [mm] and 16 x 2 [mm] ■ Alternative designs and dimensions available on request

System Components

Specifications

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■ Borehole drilling

■ The choice of the borehole diameter depends on the drilling machinery, the cable bolt length, and the bond medium

■ Version A: Filling of the borehole with cement grout or synthetic resin cartridges, then insertion of the cable bolt

■ Version B: Insertion of the cable bolt with factory-installed injection hose, subsequent injection with cement grout or injection resin

■ Anchorage of the anchor head: Plate and wedge or press sleeve

■ Prestressing of anchor and wedge sleeve using a cable bolt tensioner

■ Cable bolt tensioning jack

■ Cable bolt expansion shell

■ Dog bone coupling for slings or trusses

■ Galvanized system components available on request

■ Packers and borehole seals available on request

Installation Procedure

Accessories

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Please note: This brochure serves basic information purposes only. Technical data and information provided herein shall be considered non-binding and may be subject to change without notice. We do not assume any liabilityfor losses or damages attributed to the use of this technical data and any improper use of our products. Should you require further information on particular products, please do not hesitate to contact us.

”ALWAG” (AM 952/79), ”AT” (AM 6138/2003), ”AT-SYSTEM” (AM 6139/2003), ”DYWI®” (4197869), ”LSC” (AM 4326/2008), ”OMEGA-BOLT®” (3258282), ”POWER SET” (AM 6163/2002), and ”TUBESPILE” (AM 4328/2008) are registered trademarks of DYWIDAG-Systems International GmbH.”Combi Coat®” and ”CT-Bolt” are trademarks of Vik Ørsta AS.DYWIDAG-Systems International GmbH is a partner of Vik Ørsta AS.

DSI AustriaDYWIDAG-Systems International GmbHAlfred-Wagner-Strasse 14061 Pasching/Linz, AustriaPhone +43-7229-610 49 0Fax +43-7229-610 49 80 E-mail alwag@dywidag-systems.atwww.alwag.com

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