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Remotely placed concrete/gravel columns for point support with innovative concrete placement device and a pneumatic feeder for remote sealing and support of abandoned mines.

Authors
Burnett-M; El-Korchi-T; Burnett-JM
Source
BoM 1993 Nov; :1-45
Link
NIOSHTIC No.
10004774
Abstract
This report covers three separate areas of abandoned mine subsidence abatement technology. The first is the development of a cost effective method of remote placement of point support columns in abandoned mines through boreholes. The second is the design and test of a twin screw pneumatic pipefeeder for metering fill material into a pipeline for stowing in abandoned mine entries. The third area is a demonstration task to fill an abandoned mine tunnel using the high-efficiency pneumatic ejector and the pneumatic pipefeeder.
Keywords
Subsidence; Concrete-structures; Pipelines; Backfills; Design-criteria; Performance-evaluation; Abandoned-shafts; Underground-mining; Pneumatic-equipment; Mining-equipment; Mining-industry;
Publication Date
19931126
Document Type
Final Contract Report
Funding Type
Contract
Fiscal Year
1994
NTIS Accession No.
PB94-145596
NTIS Price
A03
Identifying No.
Contract-DIJ0329004
Source Name
Bureau of Mines, Pittsburgh, Pennsylvania
State
MA; PA
Performing Organization
Burnett Associates, Inc., Framingham, Massachusetts
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division