Methods Used To Monitor Roof Geology And Entry Supports

Tennant, James M.
Organization: International Conference on Ground Control in Mining
Pages: 5
Publication Date: Jan 1, 1982
In the mid 1970's, American Electric Power significantly expanded its internal coal production. This involved opening several large mines in seams that had never been mined on a large commercial scale before. One of the mines opened was the Martinka No. 1 Mine which is located approximately five miles southeast of Fairmont. The mine was originally designed for room and pillar mining with continuous miners but was later modified to permit the utilization of longwalls and continuous miners for entry development. The coal seam to be mined was the Lower Kittanning which averages fifty-six inches. In order to successfully mine this seam, it required that the mine design recognize the effect caused by the dip of the seam which averages four percent to the Northwest with a maximum of sixteen percent for short distances and a relatively low cover. In fact, seventy-four percent of the reserves have cover of less than four hundred feet. Also, the core hole data indicated that the immediate roof varied from zero to eighteen feet of shale with two to forty-five feet of sandstone overlying the shale.
Full Article Download:
(1155 kb)


Additional chapters/articles from the SME-ICGCM book Proceedings Second Conference On Ground Control In Mining

A New Approach To The Design Of Multi-Entry Developments For
Manifestation Of Mine Pressure And Its Relations To Overlyin
Geotechnical Investigation For A Single Entry Design For Lon
Roof Falls And Caving In Longwall Mining Operations
Support Resistance And Roof Behaviour Of A Longwall Face Wit
State Of The Art Testing Of Powered Roof Supports
Some Structural Aspects Of Designing The Shield Supports
Design Considerations For Angle Bolters
Machine Design Parameters For High Seam Truss Bolting Applic
Design Trade-Off For Angle Roof Drilling
Hydraulic Tensioning Of A Birmingham Roof Truss
Current Trends In Roof Truss Hardware
The Search For A Method To Provide Warning Of Coal And Gas O
Methods Used To Monitor Roof Geology And Entry Supports
A Method For Estimating Western Coal Strengths From Point Lo
Coping With High Lateral Stresses In An Underground Illinois
Alternatives For Controlling Cutter Roof In Coal Mines
Remote Sensing Techniques In Mine Planning - Applications An
The Use Of A Graphic Mini-Computer System As A Rock Mechanic
Greater Safety With Increased Productivity Coal Mining Opera
Critical Roof Span Approach To Selection Of Proper Coal Mine
Roof Bolt Bond Tester; A Device For Nondestructive Testing O
Remote Control Roof Bolting
Development Cooperation Between Operator And Manufacturer -
Research, Development, And Use Of Steel-Fiber-Reinforced Con
TV Borehole Inspection And Vacuum Testing Of Roof Strata
Use Of Automated Resistivity System To Locate Potential Subs
Control Of Mine Subsidence Utilizing Coal Ash As A Backfill
Surface Flooding-Considerations For Mining Facilities Site S
The Formation And Effects Of Transient Abutment Stress Durin
Some Technical Considerations When Mining Under Bodies Of Wa