self drilling rock bolt system for the coal industry ground support services pty ltd & alminco...

Self Drilling Rock BoltSelf Drilling Rock Bolt

SystemSystem

for the Coal Industryfor the Coal Industry

Self Drilling Rock BoltSelf Drilling Rock Bolt

SystemSystem

for the Coal Industryfor the Coal Industry

Ground Support Services Pty Ltd & Alminco Pty Ltd March 2008Ground Support Services Pty Ltd & Alminco Pty Ltd March 2008 Ground Support Services Pty Ltd & Alminco Pty Ltd March 2008Ground Support Services Pty Ltd & Alminco Pty Ltd March 2008

GSS

© 2008 GSS Pty Ltd & Alminco Pty Ltd © 2008 GSS Pty Ltd & Alminco Pty Ltd 22

Advanced SDRB Advanced SDRB SystemSystem Advanced SDRB Advanced SDRB SystemSystem

Installation System

New Alminco Crawler Rig

Integrated Bolting & Resin Pumping System

Standard Steel SDRB

New Telescopic SDRB

New Fibreglass SDRB

Future Directions

Installation System

New Alminco Crawler Rig

Integrated Bolting & Resin Pumping System

Standard Steel SDRB

New Telescopic SDRB

New Fibreglass SDRB

Future Directions


Objectives of the SDRB project:Objectives of the SDRB project: Objectives of the SDRB project:Objectives of the SDRB project:

Pumpable Resin Bolting System

Fit existing machines

Resin tanks, resin pumps, delivery system etc

Roof and Rib support

Minimise manual handling

Maximise rock support

Improve Productivity

Pumpable Resin Bolting System

Fit existing machines

Resin tanks, resin pumps, delivery system etc

Roof and Rib support

Minimise manual handling

Maximise rock support

Improve Productivity


Installation SystemInstallation SystemInstallation SystemInstallation System

Standard Crawler Rig with new engineering features:

Integrated & self contained

Operator seated remote from drilling & resin injection operation

Standard drill mast – vertical & horizontal drilling

New innovative Drilling Chuck

Standard Crawler Rig with new engineering features:

Integrated & self contained

Operator seated remote from drilling & resin injection operation

Standard drill mast – vertical & horizontal drilling

New innovative Drilling Chuck


Installation SystemInstallation SystemInstallation SystemInstallation System

New Drilling Chuck features:

lightweight with RH & LH mounting

offset drive motor with quick detach injection head

2 speed with RH & LH rotation

through drive socket tension to roof

New Drilling Chuck features:

lightweight with RH & LH mounting

offset drive motor with quick detach injection head

2 speed with RH & LH rotation

through drive socket tension to roof


Resin SystemResin SystemResin SystemResin System

Resin Delivery System:

Two separate systems with resin pressure control

Twin 120 litre tanks (easily increased)

New Injection Head:

seamless water & resin injection & flushing

quick change over & replacement

Resin Delivery System:

Two separate systems with resin pressure control

Twin 120 litre tanks (easily increased)

New Injection Head:

seamless water & resin injection & flushing

quick change over & replacement


Why Pumpable Resin SDRB? Why Pumpable Resin SDRB? Why Pumpable Resin SDRB? Why Pumpable Resin SDRB?

resin fills bearing plate & also locks mesh in place resin fills bearing plate & also locks mesh in place

full encapsulation both inside and outside boltfull encapsulation both inside and outside bolt

Full bolt encapsulation maximises roof supportFull bolt encapsulation maximises roof support

Resin fills cracks & cavities Resin fills cracks & cavities

No gloving, no plastic film No gloving, no plastic film

Perfect resin mixing every timePerfect resin mixing every time

Resin fills bearing plate & locks mesh in placeResin fills bearing plate & locks mesh in place

Minimises water inflow & bolt corrosion Minimises water inflow & bolt corrosion

Full bolt encapsulation maximises roof supportFull bolt encapsulation maximises roof support

Resin fills cracks & cavities Resin fills cracks & cavities

No gloving, no plastic film No gloving, no plastic film

Perfect resin mixing every timePerfect resin mixing every time

Resin fills bearing plate & locks mesh in placeResin fills bearing plate & locks mesh in place

Minimises water inflow & bolt corrosion Minimises water inflow & bolt corrosion

visible resin at collar proves full encapsulationvisible resin at collar proves full encapsulation visible resin at collar proves full encapsulationvisible resin at collar proves full encapsulation


Plate Design Plate Design Plate Design Plate Design Round design – stackable with no orientation requiredRound design – stackable with no orientation required

““soft” footprint won’t damage meshsoft” footprint won’t damage mesh

Large plate “footprint”Large plate “footprint”

Resin can fill bearing plate & lock mesh in place & provide Resin can fill bearing plate & lock mesh in place & provide intimate intimate surface contact surface contact

Once full of resin, becomes very strong in compression Once full of resin, becomes very strong in compression

Round design – stackable with no orientation requiredRound design – stackable with no orientation required

““soft” footprint won’t damage meshsoft” footprint won’t damage mesh

Large plate “footprint”Large plate “footprint”

Resin can fill bearing plate & lock mesh in place & provide Resin can fill bearing plate & lock mesh in place & provide intimate intimate surface contact surface contact

Once full of resin, becomes very strong in compression Once full of resin, becomes very strong in compression


Standard Steel SDRBStandard Steel SDRB Standard Steel SDRBStandard Steel SDRB

One piece

No drive dollies, no drill rods, no resin cartridges

fast penetration with high thrust

High Capacity ~ 36 tonnes

High load transfer capacity >1.4 tonnes/cm

Custom bearing plates with “soft” footprint

One piece

No drive dollies, no drill rods, no resin cartridges

fast penetration with high thrust


High load transfer capacity >1.4 tonnes/cm

Custom bearing plates with “soft” footprint


Rock Drilling Rock Drilling Rock Drilling Rock Drilling

Rock Drilling with SDRBs:

Possible to drill 80 MPa concrete with blue metal

Tungsten carbide ensures maximum penetration rate

Tungsten carbide equates to about 4 seconds in time cost

Rock Drilling with SDRBs:

Possible to drill 80 MPa concrete with blue metal

Tungsten carbide ensures maximum penetration rate

Tungsten carbide equates to about 4 seconds in time cost


Principle of the Telescopic SDRBPrinciple of the Telescopic SDRBPrinciple of the Telescopic SDRBPrinciple of the Telescopic SDRB

1 2 3 4


5 6 7

~3.4m

Principle of the Telescopic SDRBPrinciple of the Telescopic SDRBPrinciple of the Telescopic SDRBPrinciple of the Telescopic SDRB


New New Telescopic SDRB Telescopic SDRB New New Telescopic SDRB Telescopic SDRB

1.9m1.9m 3.4m3.4m

One piece

Automatically extendable

No couplers, no drive dollies, no

drill rods, no resin cartridges


High load transfer capacity ~2.0

tonnes/cm

Fast, simple

One piece

Automatically extendable

No couplers, no drive dollies, no

drill rods, no resin cartridges


High load transfer capacity ~2.0

tonnes/cm

Fast, simple


NewNew Fibreglass SDRB Fibreglass SDRB NewNew Fibreglass SDRB Fibreglass SDRB

nut & thread >10 tonnes nut & thread >10 tonnes

Simple, high speed, high capacitySimple, high speed, high capacity

Hollow Fibreglass Rod >30 tonnes Hollow Fibreglass Rod >30 tonnes

Fits same Drill Chuck as steel SDRBsFits same Drill Chuck as steel SDRBs



Spiral wound surface provides undulationsSpiral wound surface provides undulations

Grit coated surface Grit coated surface

Surface provides very high load transfer capacity ~ 1 tonne/cmSurface provides very high load transfer capacity ~ 1 tonne/cm



Injection moulded thread Hollow Fibreglass Rod Injection moulded thread Hollow Fibreglass Rod

Hardened Steel Drill Bit Hardened Steel Drill Bit

Small borehole annulus Small borehole annulus


New New Fibreglass SDRB Fibreglass SDRB New New Fibreglass SDRB Fibreglass SDRB

Coal Drilling in Ribs:

hardened steel drill bits okay for

coal ribs

patented Drill Bit design enables

small borehole annulus

minimises resin volume

maximises load transfer

capacity

Coal Drilling in Ribs:

hardened steel drill bits okay for

coal ribs

patented Drill Bit design enables

small borehole annulus

minimises resin volume

maximises load transfer

capacity


Bolt Performance Bolt Performance Bolt Performance Bolt Performance

0.0 0.5 1.0 1.5 2.0 2.5

X Grade

Steel SDRB

Telescopic

Fibreglass

Load Transfer Capacity (tonnes per cm)

0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0

X Grade

Steel SDRB

Telescopic

Fibreglass

Ultimate Tensile Strength (tonnes)


SDRB Drilling in 80 MPa concreteSDRB Drilling in 80 MPa concreteSDRB Drilling in 80 MPa concreteSDRB Drilling in 80 MPa concrete

Drilling in 80 MPa concrete with blue metal

Penetration rate reasonable

Rotary drilling only – no percussive

Note water being displaced by resin

Full resin encapsulation of bolt and plate

Points to Note:Points to Note:


Full Resin Encapsulation Full Resin Encapsulation Full Resin Encapsulation Full Resin Encapsulation

Resin filling “cavities”Resin filling “cavities”

The pumpable resin system synergistically

enhances the SDRB & the bearing plate

The pumpable resin system synergistically

enhances the SDRB & the bearing plate


Future Directions: Future Directions: Future Directions: Future Directions:

Refine & test Crawler mounted System

Large scale secondary bolting demonstration

Quantify field support performance:

mechanical & geotechnical & cycle times

Engineering design for a production face system

Future Continuous Miner mounted system

Refine & test Crawler mounted System

Large scale secondary bolting demonstration

Quantify field support performance:

mechanical & geotechnical & cycle times

Engineering design for a production face system

Future Continuous Miner mounted system


Thanks:Thanks:

AcarpAcarp

XstrataXstrata

AlmincoAlminco

Thanks:Thanks:

AcarpAcarp

XstrataXstrata

AlmincoAlminco

self drilling rock bolt system for the coal industry ground support services pty ltd & alminco...

Documents

alminco pty

gss pty

resin pumps

pumpable resin sdrb

time resin fills

resin cartridges high

seamless water resin

telescopic sdrb slide