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Full-scale evaluation of the strength and deformation of grout column supports for mine subsidence abatement.

Authors
Barczak-TM; Gearhart-DF
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9501, 1994 Jan; :1-16
Link
NIOSHTIC No.
10012357
Abstract
This evaluates the load supporting characteristics of grout columns used as point supports for mine subsidence abatement. The cone-shaped columns were constructed with sodium silicate and cementitious grout in both wet and dry environments. The scope of work included the testing of seven full-scale grout columns in the Bureau's Mine Roof Simulator (MRS) from which the load-deformation and failure characteristics were determined.
Keywords
Grout; Sodium-silicates; Underground-supporting; Coal-mines; Subsidence; Strata-control; Columns-support; Mining-industry; Underground-mining; Coal-mining
Publication Date
19940101
Document Type
Report of Investigations
Fiscal Year
1994
NTIS Accession No.
PB94-178167
NTIS Price
A03
Identifying No.
RI-9501
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9501
State
PA
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