Field Testing of a Real Time Roof Mapping Drilling Display System in a Limestone Mine

Collins, Craig
Organization: International Conference on Ground Control in Mining
Pages: 8
Publication Date: Jan 1, 2004
The objective was to develop a Real Time Drilling Display System for Rotary Roof Bolting using Analyzing Software to display mapped holes as they are being drilled in real time. The Analyzing Software was developed to analyze and interpret drill sensor data produced during a rotary drilled roof bolt hole by using algorithms and drill sensor data trends to find and locate roof separations or voids. After this software was validated through lab and field testing, its application needed to be tested in a production environment. However, the current method used to record the drill sensor data proved to be cumbersome for the mine to use on a continuous production basis. With different more practical mediums being explored and considered, a Drilling Display System was developed that will both map holes in real time and record the data for later review. With the Analyzing Software's current level of accuracy and with the convenience offered by the real time Drilling Display, the Drill Display System was implemented along with a test mine's current roof control plan and tested as a roof separation "Early Warning System". After installing the Drilling Display System onto a machine, input and suggestions from the mine environment were considered and design changes were made. The real world application provided a design direction that made the information produced by the Analyzing Software both convenient and significant for the test mine. Also, using the Drilling Display System increased the number of drilled holes that were both mapped and recorded. The results from studying these recorded data files lead to refinements in the current algorithms used by the Analyzing Software which increased the overall accuracy and capability of the system A fairly accurate representation of void or separation locations in the mine roof can be determined fromsensor data recorded during production bolting cycle. The immediate feedback on the local roof condition that the Drilling Display System provides, amounts to a quicker and safer alternative to the scratch hole and the video bore-scope examinations that arc performed after the bolting is completed. This project has shown that making the alternative method of examining the roof condition practical for the mine to use is just as important as the accuracy of its results. Based on the results of this field test, this or other methods of reviewing the analyzed drill hole data will be explored.
Full Article Download:
(2590 kb)

Additional chapters/articles from the SME-ICGCM book 23rd International Conference on Ground Control in Mining (ICGCM) 23rd

Geomechanical Criteria of Longwall Face Support Selection at
Rock Fracture, Caving and Interaction of Face Supports Under
Effect of the Approaching Longwall Faces on Barrier and Entr
Computer Simulation of Ground Behaviour and Rock Bolt Intera
lnterpanel Barriers for Deep Western U.S. Longwall Mining
Application of Yieldable and Cuttable Pump Crib in Longwall
Field Testing of a Real Time Roof Mapping Drilling Display S
Problems in "Void" Detection in Coal Mine Water Hazards
Violent Coal Pillar Collapse -A Case Study
Stooping Low Safety Factor Pillars at Goedehoop Colliery - 1
Laboratory Strength Testing of Coal from Selected Illinois S
Downhole Overcoring Stress Measurement at a Western Undergro
Effect of In Situ Stresses on the Stability of Coal Mine Dev
SOMA: A New Method to Calculate the Operative Stress Field:
Numerical Modeling for Increased Understanding of the Behavi
Evaluation of Rockburst Hazard from Core Testing
Investigation of Electromagnetic Emissions in a Deep Undergr
Development and Application of Geotechnical and Rockmechanic
Laboratory Testing of Rib Straps
The New Two-Dimension LaModel Program
Risk Assessment: Multiseam - Single Seam Mining
A Method To Determine Expander Spacing For Steel Pipelines I
A Case Study Of Abandoned Mine Subsidence At Dominion, Nova
Spatial Trends In Rock Strength - Can They Be Determined Fro
Development And Demonstration Of An Alternate Mining Geometr
Evaluation Of Polyurethane Injection For Beltway Roof Stabil
Application Of Ground Penetrating Radar To Evaluate The Exte
A Risk Assessment Tool For Open Cast Mining In South Africa
Analysis Of Practical Ground Control Issues In Highwall Mini
Preventing Falls Of Ground In Coal Mines With Exceptionally
Geo-Mechanical Property And Failures Of Weak Roof Shales In
Eclipse System Bolting In The Illinois Basin
Variation In The Load Transfer Of Fully Encapsulated Rockbol
Bolt Load Changes During Initial Face Advance And Cross-Cut
Coal Mine Primary Support Selection: Tension Versus Non Tens
Improving Stope Support At Modikwa Platinum Mine
3D FEM Simulation For Fully Grouted Bolts
An Investigation Into The Effectiveness Of Support Systems C
Hydraulic Prestressing Units: An Innovation In Roof Support
Improving Roof Truss Performance
Coal Combustion Byproducts-Based Artificial Mine Supports -
The Influence Of Horizontal Stress On Pillar Design And Mine
Investigation Of Pillar-Roof Contact Failure In Northern App
Mapping Hazards With Microseismic Technology To Anticipate R
Practical Detection Of Underground Mine Roof Failure
Heat-Imaging Experimental Study Of Reducing Local Gas Accumu
Microcirculation Theory Analysis Of Spontaneous Combustion O