dsi_alwag-systems_at-drainage_drilling_systems_en_01.pdf

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AT - Drainage Drilling Systems



Drainage Systems are used in Tunnelingand in Civil Engineering for draining thesurrounding foundation soil.

The aim of drainage is the stabilizationof the particular ground section.In accordance with project requirementDSI offers two different systems fordrainage works. Applications range from

jointed rock to soft foundation soil.

Contents

Introduction

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

AT - TUBESPILE™ Vacuum Lances ........... ................................................................. 4

Introduction .............................................................................................................. 4

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

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

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

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

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

Technical Features ...................................................................................................5

Installation Manual ................................................................................................... 6

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

Further Information .................................................................................................. 6

AT - Drainage System ........... ....................................................................................... 7

Introduction .............................................................................................................. 7

Fields of Application ................................................................................................ 7

Main Advantages ..................................................................................................... 7

System Description .................................................................................................. 7

System Components ............................................................................................... 8

Specifications .......................................................................................................... 8

Technical Features ...................................................................................................9

Installation Manual ................................................................................................... 9

Accessories ........................................................................................................... 10

Further Information ................................................................................................ 10



AT - TUBESPILE™ Vacuum Lances

Fields of ApplicationIntroduction

System Description

Main Advantages

AT - TUBESPILE™ Vacuum Lances are

installed rotary-percussive in one step

using a conventional drill boom.

Drill rods inside the casing tubes transfer

the drilling energy onto the drill bits,

which are available either as button drill

bits with carbide inserts or hardenedarc-shaped drill bits.

The AT - TUBESPILE™ with drainage

openings is pushed through an adapter

directly behind the drill bit. Cooling,

flushing and back-flushing of the

borehole cuttings are carried out using

water inside the casing tube. To finish the

installation, a PVC filter pipe is inserted

into the casing. In case of vacuum

drainage, a drainage hose can be

fastened to the vacuum lance following

the installation.

■ Drainage works around the excavation

■ Drainage with and without vacuum

application

■ Drainage works in all geological

conditions

The AT - TUBESPILE™ Vacuum Lance

forms part of the POWER SET product

family. The system consists of an

exterior steel tube with a PVC-drainage

tube inserted after drilling. The main field

of application is the temporary or semi-

temporary drainage of ground aroundthe excavation geometry in Tunneling

and special foundation engineering.

■ Installation using standard drilling

machinery

■ Simple and robust system components

■ Secure and simple installation

■ Drainage drilling and casing

installation in one operational step ■ Foundation soil preserving, self-drilling

installation

4




Technical Features

System Components

■ Self-drilling installation permits

application in all foundation soils

■ Numbers of drainage holes and filter

slots are adaptable to foundation soil

conditions

■ Different drill bit types are available for

all geological conditions

■ Cased installation allows proper

installation even with frequently

changing or poor ground conditions

■ No annular gap and therefore no

settlement or loosening during

installation

■ AT - TUBESPILETM Drill Bit■ Single-use drill bits Ø 52 [mm]

available as arch-shaped or

pin-shaped drill bits

■ AT - TUBESPILETM Vacuum Lance■ Ø 51 x 3.2 [mm] with drainage

openings and 2" connecting thread

■ POWER SET Drill Rod■ Special drill rod for high service life

■ POWER SET Coupling Adapter■ Controlled transfer of the impact

energy onto the AT - TUBESPILETM

■

AT - TUBESPILE

TM

Filter Pipe

SystemMaterial

Outer

diameter

Wall

thickness

Drainage slot

widthWeight

Standard

tube length

[mm] [mm] [mm] [kg/m] [m]

AT - TUBESPILE™ with Drainage Openings Steel ≥ S235 2) 51 3.2 – 3.8 3.0 / 3.5 / 4.0 / 4.

AT - TUBESPILE™ Filter Pipe PVC 44 3.5 0.6 / 1.0 / 1.5 1.55 3

1) Differing dimensions are available on request

2) Minimum values in accordance with EN 10025-2

Specifications 1)

Ready-for-use AT - TUBESPILETM Vacuum Lance

AT - TUBESPILE TM Filter Pipe

AT - TUBESPILE TM Drill Bit POWER SET Drill Rod

AT - TUBESPILE TM Filter Pipe AT - TUBESPILE TM Vacuum Lance

POWER SET Coupling Adapter




Installation Manual

1. Attachment of the AT - TUBESPILETM

Vacuum Lance and the

AT - TUBESPILETM single-use Drill Bit

onto the POWER SET Drill Rod,

coupling of the POWER SET Coupling

Adapter to the hydraulic rock drill

2. Rotary-percussive self-drilling

installation via single-use drill bit;

flushing of the cuttings through the

annular gap between the drill rod and

the TUBESPILE™

3. Completion of the drilling process

after reaching the drilling depth

4. Retraction of the POWER SET Drill Rod

from the installed AT - TUBESPILETM Vacuum Lance; the single-use drill bit

remains in the borehole

5. Insertion of a filter tube into the

AT - TUBESPILETM Vacuum Lance

6. Optional connection of a drainage hose

and coupling onto a vacuum pump

Accessories Further Information

■ Vacuum pump

■ DYWI® Inject Systems

■ Injection packers

■ POWER SET Automation Unit

■ Brochure POWER SET Self-Drilling Friction Bolt

■ Brochure AT - TUBESPILETM

■ Technical data sheet AT - TUBESPILETM

6



AT - Drainage System

Fields of Application

Main Advantages

System Description

■ Far-ranging drainage works

■ Drainage with and without vacuum

application ■ Drainage of the ground ahead of theadvance and parallel to construction

■ Reduction of water pressure infault zones ahead of construction

■ Stabilization of water saturated slopes

■ Reduction of the water pressurebehind construction walls

■ Drainage works in all geologicalconditions

■ Installation using conventional drillingmachines

■ Execution of the drilling works canbe carried out by on-site personnelguided by application engineers

■ Time-saving self-drilling installationthanks to simultaneous drilling andcasing

■ Installation also possible in flowingground conditions

■ Length of the drainage tubes adaptableto little space

The AT - Drainage System is installedpiecewise by rotary-percussive drillingwith conventional drill booms. Cooling,flushing, and back-flushing of theborehole cuttings take place inside thedrainage tube.

Introduction

The AT - Drainage System is used fordeep reaching drainage and forms partof the AT - Casing System productfamily. It is used in Tunneling andin Civil Engineering for draining thesurrounding ground and consists of an

inner steel tube which is wrapped witha PVC-drainage pipe. The AT - DrainageSystem can be applied temporarily aswell as semi-permanently. Examples ofapplication are drainage works parallelto tunnel advances or water saturatedslopes.




System Components

SystemInner tube Filter pipe 3) Outer diameter Weight

Standard

tube length

Material Material [mm] [kg/m] [m]

AT - 76-DR Steel ≥ S235 2) PVC 76.1 7 3.0

AT - 118-DR Steel ≥ S235 2) PVC 118 15 3.0

1) Differing dimensions are available on request

2) Minimum values in accordance with EN 10025-2

3) Slot opening width 0.6 / 1.0 / 1.5 [mm]; 3 slots around the whole pipe diameter

Specifications 1)

Ready-for-use AT - Drainage System

AT - Drainage Starter Unit with Drill Bit

AT - Drainage Extension Tube

AT - Drainage End Tube

End Cap

Different AT - Drill Adapters

Coupling Adapter

and Drill Rods

■ AT - 76-DR Starter Unit with

DR-Extension Tube (standard system)

■ By request, the AT - 118-DR System is

also available as DTH hammer version

8




Technical Features

■ Fast length adaption of AT - Drainage

Tubes by piecewise installation

■ Simple extension of drainage tubes

even in limited space

■ High directional accuracy of

drainage drillings ■ Drainage pipes can be flushed for

cleaning when installed as permanent

measure

■ The AT - 118-DR System can be

installed using a down-the-hole-hammer

or a top hammer

Installation Manual

1. The AT - DR-Starting Unit with Drill Bitis prepared for installation with the first

AT - Drainage Extension Tube,

the AT - Drill Adapter, and the drill rod

on the drill boom

2. Drilling of the first

AT - Drainage Extension Pipe

3. The next drill rod including the

AT - Drainage-Extension Tube is

connected to the previously installed

part and is subsequently drilled

4. Repetition of the last step until the

planned length of the drainage drilling

has been reached




Accessories

Further Information

■ Injection packers

■ DYWI® Inject Systems

■ Chain pipe wrench

■ Drill rod wrench

■ Rock drilling equipment:

shank adapter, coupling, and couplingadapter

■ Fishing tab

■ Brochure AT - Pipe Umbrella Support

System ■ Technical data sheet


10



0 4 3 5 2 1 / 1 2 1 2 w e b h e

Please note:This brochure serves basic informationpurposes only. Technical data and informationprovided herein shall be considerednon-binding and may be subject to changewithout notice. We do not assume any liabilityfor losses or damages attributed to the useof this technical data and any improperuse of our products. Should you requirefurther 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 registeredtrademarks of DYWIDAG-Systems International GmbH.”Combi Coat®” and ”CT-Bolt” are trademarksof Vik Ørsta AS.DYWIDAG-Systems International GmbHis a partner of Vik Ørsta AS.

EMEA DYWIDAG-Systems International GmbH Alfred-Wagner-Strasse 14061 Pasching/Linz, AustriaPhone +43-7229-610 49 0Fax +43-7229-610 49 80E-mail [email protected]

North AmericaDSI Underground Systems Inc.9786 S Prosperity Road

West Jordan, UT 84081, USA Phone +1-801-973 7169Fax +1-801-973 7172E-mail [email protected]

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 [email protected]

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 [email protected]/au

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