Surface Subsidence Over Longwall Panels in the Western United States
Author : Frederick K. Allgaier
Publisher :
Page : 32 pages
File Size : 15,32 MB
Release : 1982
Category : Coal mines and mining
ISBN :
Author : Frederick K. Allgaier
Publisher :
Page : 32 pages
File Size : 15,32 MB
Release : 1982
Category : Coal mines and mining
ISBN :
Author : Alan J. Fejes
Publisher :
Page : 32 pages
File Size : 45,46 MB
Release : 1986
Category : Longwall mining
ISBN :
Author : Frederick K. Allgaier
Publisher :
Page : 28 pages
File Size : 42,65 MB
Release : 1988
Category : Longwall mining
ISBN :
Author : Frederick K. Allgaier
Publisher :
Page : 24 pages
File Size : 23,18 MB
Release : 1982
Category : Coal mines and mining
ISBN :
Author : Alan J. Fejes
Publisher :
Page : 21 pages
File Size : 32,61 MB
Release : 1986
Category :
ISBN :
Author : Frederick K. Allgaier
Publisher :
Page : 17 pages
File Size : 30,37 MB
Release : 1988
Category : Federal aid to medical education
ISBN :
Author : Frederick K. Allgaier
Publisher :
Page : 17 pages
File Size : 26,69 MB
Release : 1988
Category : Federal aid to medical education
ISBN :
Author :
Publisher :
Page : 21 pages
File Size : 37,87 MB
Release : 1986
Category :
ISBN :
Author : Robert C. Dyni
Publisher :
Page : 28 pages
File Size : 17,46 MB
Release : 1991
Category : Longwall mining
ISBN :
Author : Jeff A. Magers
Publisher :
Page : 24 pages
File Size : 17,93 MB
Release : 1993
Category : Coal mines and mining
ISBN :
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.