Surface Subsidence Over Longwall Panels in the Western United States PDF Download
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Author: Frederick K. Allgaier
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 32
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Book Description
Author: Frederick K. Allgaier
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 32
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Book Description
Author: Alan J. Fejes
Publisher:
ISBN:
Category : Longwall mining
Languages : en
Pages : 32
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Book Description
Author: Frederick K. Allgaier
Publisher:
ISBN:
Category : Longwall mining
Languages : en
Pages : 28
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Book Description
Author: Frederick K. Allgaier
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 24
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Book Description
Author: Alan J. Fejes
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
Author: Frederick K. Allgaier
Publisher:
ISBN:
Category : Federal aid to medical education
Languages : en
Pages : 17
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Book Description
Author: Frederick K. Allgaier
Publisher:
ISBN:
Category : Federal aid to medical education
Languages : en
Pages : 17
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
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Book Description
Author: Robert C. Dyni
Publisher:
ISBN:
Category : Longwall mining
Languages : en
Pages : 28
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Book Description
Author: Jeff A. Magers
Publisher:
ISBN:
Category : Coal mines and mining
Languages : en
Pages : 24
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Book Description
This report summarizes the results from the subsidence research study completed by the U.S. Bureau of Mines at the Roadside Mine, Powderhorn Coal Co., Palisade, Co. This research was conducted from February 1981 to August 1985, with additional data obtained during July 1991, to evaluate residual subsidence. The Bureau studied subsidence at three district room-and-pillar sections at separate locations over the mine and determined the maximum subsidence values and surface subsidence profiles for each mining section. Maximum subsidence of 3.0 ft occurred over the room-andpillar sections, with overburden depths ranging from 50 to 600 ft. Surface tension cracks had occurred, and were still evident during the residual subsidence survey.
