Improved Coal-Interface Detector. Final Technical Report, December 1981: Fid-Bau Portal

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Improved Coal-Interface Detector. Final Technical Report, December 1981

K. C. Roe / R. C. Wittmann

In many underground coal mines a specified thickness of coal is required to be left in the roof as the coal is mined to maintain roof stability and prevent exposure of the overburden to air that might cause it to deteriorate. Determining the thickness of the coal left in the roof during mining is important for safety reasons and to maximize profit to the mine operators. The system (FM/CW radar) described in this report calculates the coal thickness from the time delay measurements of electromagnetic waves reflected from the bottom and top surfaces of the roof coal. This report describes the theory, design, construction and testing of an electromagnetic coal interface detector. An above ground test facility constructed to evaluate the coal interface detector is also described. (ERA citation 07:052613)

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Improved Coal-Interface Detector. Final Technical Report, December 1981

K. C. Roe / R. C. Wittmann

In many underground coal mines a specified thickness of coal is required to be left in the roof as the coal is mined to maintain roof stability and prevent exposure of the overburden to air that might cause it to deteriorate. Determining the thickness of the coal left in the roof during mining is important for safety reasons and to maximize profit to the mine operators. The system (FM/CW radar) described in this report calculates the coal thickness from the time delay measurements of electromagnetic waves reflected from the bottom and top surfaces of the roof coal. This report describes the theory, design, construction and testing of an electromagnetic coal interface detector. An above ground test facility constructed to evaluate the coal interface detector is also described. (ERA citation 07:052613)

Improved Coal-Interface Detector. Final Technical Report, December 1981

K. C. Roe / R. C. Wittmann

In many underground coal mines a specified thickness of coal is required to be left in the roof as the coal is mined to maintain roof stability and prevent exposure of the overburden to air that might cause it to deteriorate. Determining the thickness of the coal left in the roof during mining is important for safety reasons and to maximize profit to the mine operators. The system (FM/CW radar) described in this report calculates the coal thickness from the time delay measurements of electromagnetic waves reflected from the bottom and top surfaces of the roof coal. This report describes the theory, design, construction and testing of an electromagnetic coal interface detector. An above ground test facility constructed to evaluate the coal interface detector is also described. (ERA citation 07:052613)

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Titel:

Improved Coal-Interface Detector. Final Technical Report, December 1981

Beteiligte:

K. C. Roe (Autor:in) / R. C. Wittmann (Autor:in)

Erscheinungsdatum:

1981

Format / Umfang:

50 pages

Medientyp:

Report

Format:

Keine Angabe

Sprache:

Englisch

Schlagwörter:

Mineral Industries , Coal Seams , Rocks , Automation , Coal Mining , Detection , Electromagnetic Radiation , Interfaces , Microwave Radiation , Mining Equipment , Performance Testing , Roofs , Test Facilities , Underground Mining , ERDA/012000 , ERDA/420206 , ERDA/440300

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