EVENT INDICATOR FOR CABLES AND FLEXIBOLTS
CABLE ANCHOR EVENT INDICATOR
The M and J Cable Anchor Version 2 (V2) Event Indicator is a cylindrical instrument that fits over a 15mm strand between the plate and the convex side of the nose of a 10t AMS Compact Barrel.
The device has an orange coloured plastic push out ring housed between the indicator nose and inner body and is visible via four holes spaced evenly around the indicator nose.
The Event Indicator is unaffected during the tensioning of the 10t AMS Barrel. Only when ± 3mm of stope convergence has occurred will the inner body enter the indicator nose and the plastic push out is forced through the four holes and be exposed
Non Activated V2 15T Event Indicator
Activated V2 15T Event Indicator
Non Activated V2 15T Event Indicator during press test. Note white plastic used during trials
Activated V2 15T Event Indicator during press test.
Note white indicator used during trials
Non Activated V2 15T Event Indicator on a 15mm strand
Advantages of the Cable Anchor Event Indicator Version 2
Compact and lightweight and easily transported
Easily inserted during a normal 25t Cable Anchor installation with minimal increase to the exposed portion of the Cable Anchor after installation
Will be installed on de-bonded Cable Anchors that will be easily identified by an orange coloured sheath over the strands behind the orange coloured plate
The Cable Anchor can be installed in a positioned within 0.5m of the face before the blast
Requires ± 3mm of stope convergence to be activated which equates to ± 150kN force
Located on de-bonded cable anchors that are installed in a pre determined pattern. The plastic push outs are brightly orange coloured so they are easily and quickly visible once exposed
FALL OF GROUND EARLY WARNING SYSTEM
The RockCop has been designed as an early warning system to detect and give warning of any moment in the hanging / side wall strata layers that could result in a possible fall of ground. The RockCop provides a safer underground mining environment to prevent injuries and fatalities.
The RockCop has two clear warning identifications, one being if there is a movement a movement in rock within the first 150 mm a blue LED light will flash as well as a blue reflector pin becomes visible. The second monitoring position for above 150 mm is indicating by a red LED light flashing and a red reflector pin visible.
With the RockCop robust design it can be installed 1 meter from the blast face without affecting the functionality of the RockCop. The RockCop early warning device is easy to install and installed flush with the rock surface which protects it from vehicle and machinery damage in low areas. The RockCop is available in easy colour identification for different lengths.
FULL COLUMN GROUT INDICATOR
GROUT EFFICIENCY TESTER
GET System: Ensuring Full Column Grouted Anchors
How the efficiency of Grouted Anchors is currently tested:
Strength (Load bearing capability) – Conducting Pull tests
Length (In-hole length) – Painting the live end of the strand
Tension (Pre-tension) – AMS Barrel Snap Ring that pops
Integrity/Grout (Life of Mine)
Current measures to ensure full column grouting:
Excess grout visible on or discharging from breather tube
Sharpened prodder stuck up feeder and breather tubes to “feel” for grout
Pulling on feeder and/or breather tubes – are they tight/loose
Supervision 100% of the time
All these current measures are reactive
REQUIRED: A PRO-ACTIVE ANSWER/SOLUTION
Route the HT double insulated cable through the breather tube to protect it
Secure the HT double insulated cable to the strand where required
Strip off one insulation layer off the end of the HT double insulated cable and route it through the lower latch opening so it protrudes below the shielding dome to form the latch assembly
Ensure the end of the HT double insulated cable has been “bared” to enable full contact with the grout, but not with the strand
Before grouting the anchor test to see if the cable is not damaged or “shorting out” against the strand (No green LED’s illuminated indicate no FCG)
After grouting the anchor test to see if the anchor is full column grouted (All green LED’s illuminated indicate FCG)
GET Reader installed just below LA shell
GET insulated cable fed through breather pipe
Grouting the long anchor
Tester unit indicates LA is full column grouted
PRE-LOAD INDICATORS FOR CABLE ANCHORS
AMS BARREL - STANDARD AND COMPACT
The AMS (Anchor Management System) Barrel Assembly is designed as a visual and audible pre-load indication system for Cable Anchors. The product is designed with the following roles and features:
It has a coloured pre-load indicator ring that is only fully visible once the specified pre-load tension has been reached, thus avoiding confusion between correctly and incorrectly installed Anchors
The Snap Ring is configured to emit a definite audible and tangible indication once the pre-load tension is achieved within the strand
The Snap Ring is also designed to break away from the barrel assembly after complete installation, enabling accountable and manageable proof of a successful installation
MGII Barrel and Wedge profile for optimal load bearing performance
18t AMS Standard Barrel
10t Compact AMS Barrel
AMS Standard Barrel Assembly
- Barrel Nose
- Pre-load Indicator Ring
- Snap Ring
10t AMS Compact Barrel Assembly
- AMS Compact Barrel
- 10t Pre-load Indicator Ring
- Snap Ring
- 15mm MGII Wedge
THE AMS LIVE SYSTEM
The AMS Live System is an all-in-one traceable, auditable and monitorable solution for cable anchors which has been specifically designed to allow any user to leverage the full use of the system.
The system consists of three main components:
- The barcode-tagged AMS snap ring
- A hand held barcode scanner
- The AMS Live software package
The snap ring used on the AMS Live barrel is identical to the current AMS barrel, with the exception of a heavy-duty barcode tag located on the inside of the ring. When the AMS anchor is tensioned the snap ring breaks and is removed from the barrel. This ring is then brought to the scanning station on surface. An operator inputs the location where the anchor was installed into the Live software, which links each snap rings scanned barcode to the specified location.
The AMS Live software allows the efficient, reliable tracking of anchor installations and enables the user to:
Quickly and easily capture each anchors installed location
Pull up reports on installation data, which can be used to:
- Monitor numbers of anchors being issued verses installed
- Track the number of anchors being installed per installer
- Ensure that the anchor installations are located as per the support plan
- Check that AMS anchors are being correctly installed
The AMS live software also has built in safety protocols, which prevents duplicate rings from being scanned as well as an encoded serial number, which prevents any possible incorrect data capturing. This guarantees reports that are always valid and accurate, which ensures that the integration of the AMS Live system into the roof support system is simple and trustworthy.
It is also completely customisable and can easily be adjusted to suit each users specific needs in terms of which data is linked to an anchor installation and which date.
Due to this customisability, the AMS software can be used in multiple situations, including the stores when the anchors are issued, in the contractors office where the installations are captured and by the financial department when payment is allocated to the installers based on the numbers of anchors installed.