DYWI® Drill Expansion Bolt Type T

2

Immediately after the self-drilling installation, an activation of the expansion element leads to immediate load-bearing capacity. The DYWI® Drill Expansion Bolt can be optionally tensioned following the fixation of plate and nut. Subsequent grouting, de-coupled from the actual installation procedure, permits further optimization of installation cycle times.

The DYWI® Drill Expansion Bolt is available in two different versions. Type M is mainly used for systematic rock bolting in underground Mining (see separate brochure). Type T is used for rock bolting in hanging wall areas and in applications that require an extension of bolts using couplings.

Within the last few years, various so-called “one-step” rock bolt systems have been developed. This is a result of steadily increasing demands on rock bolting procedures in underground Mining and Tunneling and the ensuing higher demand for self-drilling rock bolts. The self-drilling rock bolt product family has now been extended by providing an expansion element for the DYWI® Drill Hollow Bar System.

The key factor for the success of this rock bolt is the combination of the long-term proven DYWI® Drill Hollow Bar with a robust and innovative expansion element. The DYWI® Drill Expansion Bolt is installed self-drilling; borehole drilling and bolt installation are accomplished in one operational step. The system’s adaptability to changing rock and ground conditions is an important feature of the DYWI® Drill Expansion Bolt.

Contents

Introduction

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

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

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

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

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

Technical Data ............................................................................................................. 6

Technical Features ....................................................................................................... 6

Installation Procedure .................................................................................................. 7

Accessories ................................................................................................................. 7

Further References ...................................................................................................... 7

Order Information ......................................................................................................... 7

3

■ Simultaneous drilling and installation

■ Installation using standard drilling machinery

■ Immediate load-bearing capacity after installation and activation of the expansion element

■ Reduction of cycle time due to the de-coupling of the grouting procedure from installation

■ Ability to maintain load-bearing capacity even when undergoing large deformations

■ Tough system components

■ Safe, easy, and reproducible installation procedure

■ Improved drilling accuracy thanks to the directional guidance of the self-drilling expansion element

■ Trouble-free application in unstable borehole conditions

■ Easy extension using couplings

■ Design and diameter of the expansion element can be adjusted to suit different and varying ground conditions

■ Expansion bolt: mechanically anchored and fully grouted

■ Self-drilling installation based on the principle of the DYWI® Drill Hollow Bar System

■ Hollow bar with continuous cold-rolled left-hand outside thread utilized as drill rod during installation

■ Rotary-percussive installation using standard underground drilling machines

■ Conventional or automated installation

■ Immediate load-bearing capacity via the mechanical end anchorage

■ Subsequent optional grouting feature

■ Flexible application range from 210 to 800 kN: R32-210 to R51-800

■ Type T: version for rock bolting in hanging wall areas or for larger bolt lengths, permits coupled installation

■ Type T: utilization of several subsequently aligned expansion elements allows a higher load-bearing capacity even in weak ground

Fields of Application

DYWI® S-D Expansion Bolt Type T, R32-051

DYWI® S-D Expansion Bolt Type T, R38-076

DYWI® S-D Expansion Bolt Type T, R38-076, with two coupled expansion elements

Main Advantages

System Description

■ Mining ■ Systematic rock reinforcement ■ Rock bolting in remote areas or areas of difficult access ■ Supplementary bolting ■ Utility and hanger bolts

■ Tunneling ■ Rock bolting in underground caverns ■ Face bolts ■ Driving in critical ground conditions ■ Squeezing ground

■ Civil Engineering ■ Rock fall and rock slide protection ■ Anchorage of avalanche barriers ■ Reinforcement of excavation pits and retaining walls

4

System Components Type T

Ready-for-use DYWI® S-D Expansion Bolt Type T, R32-051

Ready-for-use DYWI® S-D Expansion Bolt Type T, R38-076

■ DYWI® Drill Bit ■ Single-use drill bits in different diameters and designs ■ Hardened or carbide inserts

■ DYWI® Drill S-D Expansion Element Type T ■ Standard hollow bar diameters: R32, R38 and R51 ■ R38 and R51: several coupled expansion elements can be used

■ DYWI® Drill Hollow Bar R32, R38 or R51 ■ Used as drill rod during installation ■ Type R32-210 to R51-800

■ DYWI® Drill Coupling ■ Optional extension ■ Continuous inside thread with middle stop ■ Controlled drilling energy transmission ■ Full load bearing capacity

■ Domed plate ■ Different designs and dimensions available on request

■ DYWI® Drill Nut

■ Drive adapter ■ Couplings in different versions

5

Technical Data Series R32

Technical Data Series R38 and R51

No. Characteristic Value/Type 1) Symbol Unit R38-420 R38-500 R38-550 R51-550 R51-660 R51-8001 Nominal external diameter Øe.nom [mm] 38 512 Actual external diameter Øe [mm] 37.8 49.83 Average internal diameter 2) Øi [mm] 21.5 19.0 17.0 34.5 33.0 29.04 Nominal cross-sectional area 3) S0 [mm²] 660 750 800 890 970 11505 Nominal weight 4) m [kg/m] 5.15 5.85 6.25 6.95 7.65 9.006 Yield load 5) Fp0.2.nom [kN] 350 400 450 450 540 6407 Ultimate load 5) Fm.nom [kN] 420 500 550 550 660 8008 Yield strength 6) Rp0.2 [N/mm²] 530 530 560 510 560 5609 Ultimate strength6) Rm [N/mm²] 640 670 690 620 680 70010 Rm/Rp0.2 7) – [1] ≥ 1.1511 Ultimate load strain 7) Agt [%] ≥ 5.012 Thread standard – [–] ISO 10208 ISO 182013 Standard bar length 8) – [m] 2/3/4/614 Article No. 9) – [–] 30201YYY10X0 30301YYY10X0

No. Characteristic Value/Type 1) Symbol Unit R32-210 R32-250 R32-280 R32-320 R32-360 R32-4001 Nominal external diameter Øe.nom [mm] 322 Actual external diameter Øe [mm] 31.13 Average internal diameter 2) Øi [mm] 21.0 20.0 18.5 16.5 15.0 12.54 Nominal cross-sectional area 3) S0 [mm²] 340 370 410 470 510 5605 Nominal weight 4) m [kg/m] 2.65 2.90 3.20 3.70 4.00 4.406 Yield load 5) Fp0.2.nom [kN] 160 190 220 250 280 3307 Ultimate load 5) Fm.nom [kN] 210 250 280 320 360 4008 Yield strength 6) Rp0.2 [N/mm²] 470 510 540 530 550 5909 Ultimate strength 6) Rm [N/mm²] 620 680 680 680 710 71010 Rm/Rp0.2 7) – [1] ≥ 1.1511 Ultimate load strain 7) Agt [%] ≥ 5.012 Thread standard – [–] ISO 1020813 Standard bar length 8) – [m] 2/3/4/614 Article No. 9) – [–] 30101YYY10X0

■ Adjustment of the single-use DYWI® Drill bits to different rock conditions and applications

■ Reliable anchorage in the toe area due to a widening of the expansion element

■ Free length systems available on request

■ Compression tube anchor version available on request

Technical Features

1) Status: 2012-06, note: all values are subject to change2) Calculated from the actual external diameter, the average thread height, and the nominal cross-sectional area, rounded3) Calculated from the nominal weight: S0 = 106 x m/7,850 [kg/m3]4) Deviation: -3/+9 [%]5) Characteristic 5 %-fractile value6) Calculated from the characteristic load value and nominal weight, rounded7) Characteristic 10 %-fractile value8) Off-size bar lengths are available on request / modulus of elasticity: 205,000 [N/mm2]9) “YYY“ ... Ultimate Load/10 [kN]; “X“ ... hollow bar length [m]

6

Description Article No.

S-D Expansion Bolt Type T, R32-051 301050043051S-D Expansion Bolt Type T, R32-076 301050044076S-D Expansion Bolt Type T, R38-095 301050044095S-D Expansion Bolt Type T, R51-125 301050044125

■ Centralizers

■ Sleeves for free length systems

■ Rock drilling equipment: shank adapters, couplings, and coupling adapters

■ Grouting adapters

■ DSI cement grout

■ Mortar-Mixing pumps

■ Flow-Pressure meters

■ Stressing, pre-loading, or pull testing equipment

■ Leaflet DYWI® Drill Hollow Bar System

■ DSI leaflet on drill bits for the DYWI® Drill Hollow Bar System

■ Approval for application as soil nail for temporary and semi-permanent application by the Austrian Federal Ministry of Transport, Innovation and Technology, Vienna, GZ: BMVIT-327.120/0010-IV/ST2/2012

■ European Technical Approval (ETA) as rock and soil nail for temporary and permanent application, currently in preparation (ETA application: GZ OIB-240-007/09)

Accessories Order InformationFurther References

■ Assembly of the DYWI® Drill Expansion Bolt Type T and connection of the drive adapter to the rock drill

■ Rotary percussive self-drilling installation (counterclockwise rotation) without casing: single-use drill bit and hollow bar drill steel, water or air-water mixture flushing

■ Optional extension using couplings

■ Activation of the expansion element after the final drilling depth has been reached: withdrawal of the rock drill with hammer strokes

■ De-coupling of the drive adapter

■ Fixation and assembly of anchorage (plate and nut)

■ Optional de-coupled post injection

Installation Procedure Type T

7

0434

8-1/

03.1

3-w

eb-h

e

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.

EMEADYWIDAG-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

North AmericaDSI Underground Systems Inc.9786 S Prosperity RoadWest Jordan, UT 84081, USAPhone +1-801-973 7169Fax +1-801-973 7172E-mail dsiunderground@dsiunderground.comwww.dsiunderground.com

South AmericaDSI Chile Industrial Ltda. Las Encinas #1387, Valle GrandeLampa, Santiago de Chile, ChilePhone +56-2-596 96 20Fax +56-2-596 96 69E-mail informaciones@dywidag-systems.clwww.dsi-chile.com

APAC/ASEANDYWIDAG-Systems International Pty. Ltd.25 Pacific HighwayBennetts Green, NSW 2290, AustraliaPhone +61-2-49 48 90 99Fax +61-2-49 48 99 56E-mail dsi@dywidag.com.auwww.dsiminingproducts.com/au

A u s t r i AA r g e n t i n AA u s t r A l i A

b e l g i u mb o s n i A A n d h e r z e g o v i n A

b r A z i lC A n A d A

C h i l eC o l o m b i A

C o s tA r i C AC r o At i A

C z e C h r e p u b l i Cd e n m A r k

e g y p te s t o n i AF i n l A n dF r A n C e

g e r m A n yg r e e C e

g u At e m A l Ah o n d u r A s

h o n g k o n gi n d o n e s i A

i tA lyJ A pA n

k o r e Al e b A n o n

l u x e m b o u r gm A l Ay s i A

m e x i C on e t h e r l A n d s

n o r w Ayo m A n

pA n A m ApA r A g u Ay

p e r up o l A n d

p o r t u g A lQ AtA r

s A u d i A r A b i As i n g A p o r e

s o u t h A F r i C As pA i n

s w e d e ns w i t z e r l A n d

tA i w A nt h A i l A n d

t u r k e yu n i t e d A r A b e m i r At e s

u n i t e d k i n g d o mu r u g u Ay

u s Av e n e z u e l A