Development of Mechanized Ground Support Installation Equipment for Improved Safety in Narrow Vein Mine Conditions

Kendall, William
Organization: International Conference on Ground Control in Mining
Pages: 4
Publication Date: Jan 1, 2014
INTRODUCTION Stillwater Mining Company, with its two underground, hard rock mines in South Central Montana, is the largest primary producer of palladium and platinum in the Western Hemisphere. Platinum Group Metals (PGMs) are mined from a specific zone within the Stillwater Complex, a layered mafic/ultramafic igneous intrusion, named as the J-M Reef. Over much of the J-M Reef, the economically minable, mineralized horizon is contained at typical horizontal widths of 6.5 ft to 8 ft wide. This feature of narrow mining widths has made it challenging to safely and effectively mine these areas of the J-M Reef using mechanized cut and fill and sublevel sill development mining methods. Mechanization of most or all of the steps of the mining process is important to Stillwater in the continuous pursuit of high standards in safety and health. Mechanized bolting within the J-M Reef ore production headings is an important piece of reaching these objectives. In general, metal/non-metal mining requires varied mining techniques, as compared to more traditional bedded mineral/resource deposits. Narrow vein mining is a selective mining technique that generates a minimal amount of waste material while obtaining the more valuable ore deposits. Drilling and bolting in narrow vein mining has traditionally been performed with air-powered, hand-held ?jackleg? equipment because mechanized equipment is, typically, too large for the selective narrow vein techniques. In addition, traditional hand-held pneumatic equipment provides significant flexibility for small-opening, narrow-vein developments, reducing waste rock handling and improving ore recovery management. The hand-held equipment is also relatively inexpensive to purchase. Due to its simplicity, it is also relatively easy to train operators to use hand-held equipment. Hand-held equipment has been routinely used to safely install ground support and to develop production faces in hard rock mines for many years. Although it is effective, the hand-held equipment requires operator exposure to certain inherent hazardous conditions in the active face/development mine areas. These include falling rock, tripping hazards, bending/twisting/lifting hazards, high noise levels, and chemical fumes from the hammer exhaust. Based on health and safety statistics from the Stillwater mines, operation of the rotary-percussive hand-held equipment adversely affects the long-term health of the operator?continual jackleg operation frequently results in long term damage to hearing, shoulders, arm and wrist joints, and back injuries. This reduces the quality of life for the operator and also results in higher personnel turnover rates for the mining company.
Full Article Download:
(2899 kb)

Additional chapters/articles from the SME-ICGCM book 33rd International Conference on Ground Control in Mining

Development of the 3D Numerical Modeling of Roof Bolts for S
Development and Application of the TT Anti?Friction Washer f
A Comparison Between ARMPS and the New ARMPS?LAM Programs
Multi?stage Testing Procedures, Verification, and Results fo
The Caterpillar HW300 Quickscan
Underground Mining Technology in Chinese Coal Mines
Rock Characterization Using Time - Series Classification Alg
Ground Control in the Underground Coal Mines of Colombia
Investigating the Contributing Factors to Rib Fatalities Thr
Analyses of De-Confinement Mechanisms of Unstable Failures i
Photogrammetric Monitoring of Rock Mass Behavior in Deep Vei
Development of An Enhanced Methodology for Ground Movement P
Estimating Coal Strength Based on Historical Laboratory Test
Experimental Observations and Interpretations on Fracture Ne
Overburden Failure Characteristics of Extra?Thick Seam Using
FlexKnot: An Innovation in Roof and Rib Surface Control
Learning Our Geotechnical Limits and Pushing Our Longwalls T
Three Dimensional Analysis of Strain and Ground Surface Disp
Use of a Plate Loading Device to Quantitatively Evaluate Wea
Ground Control Design Considerations for Reducing Longwall?I
Mechanics of Horizontal Movements Associated with Coal Mine
Roof Geotechnical Properties for Roof Control Purposes in Il
Update: Analysis and Case Study of Impact?Resistant Steel Se
The Implementation of Rock Mechanics Into a Multiple Level L
A Case Study for Multiple Seam Calibration of LaModel in Bum
A Liquid Settlement System for Measuring Roof Sag During Dev
Ground Response As a Longwall Advances Into a Backfilled Rec
A Case Study of a Low Overburden Longwall Recovery with Pre?
To What Extent the Mechanical Properties of Coal Play Role i
Mine Water Vs. Drinking Water?Technical Execution and Legal
Mitigation of a Massive Sandstone Channel?s Impact on Longwa
Study on the Modified Model of Probability Integra Method
Multi?Seam Mining Over Old Workings with Small Pillars - A C
Development of Mechanized Ground Support Installation Equipm
Understanding and Optimizing the Performance of Passive Prim
Validation of Overburden Failure Zone in Complex Extra Thick
The Impact Factors of Overburden Movement in Longwall Mining
Fiber Reinforced Polymer Rockbolts for Ground Control in a S
Introduction of a Measurement Based Ground Control Managemen
Application of Various Probing Methods for Rock Characteriza
Risk Analysis and Risk Ranking in Tunneling: A Case Study
Development of Road Header Roof Bolting Module
Combined Effects of Rock Bedding Orientation and Topography
Challenges of Room and Pillar Mining at 900 M Depths in the
Sandy Creek Waterfall?Case Study of Successful Management of
Overburden Strata Movement for the Longwall Mining of Shallo
Rock Slope Stability Comparison Between Deterministic and Pr
Stability of a Gateroad Used Simultaneously for Two Retreati
Meeting the Challenges of Floor and Sidewall Strata Control
Strata Control Investigations During Fully Mechanized Coal P
Strata Movement Around Large Mining Height Face Area with Fu
A Case Study of Topography?Related Stress Rotation Effects o
Introduction of a New Superior Coating on Ground Support Pro
Suspension Designs Required in the Logical Framework
A Novel and Effective Method to Develop Tension in a Roof Bo
Time Dependent Mining Induced Subsidence Measured by Differe
Tracking and Tracing in Terms of Transportation Logistics of