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Properties of filter cloths for seepage control in coal mine waste embankments.

Authors
Gabler-RC Jr.
Source
Avondale, MD: U.S. Department of the Interior, Bureau of Mines, RI 8871, 1984 Jan; :1-23
Link
NIOSHTIC No.
10003495
Abstract
Three filter cloth fabrics commonly used in drains for coal waste embankments were tested by the Bureau of Mines for clogging behavior and deterioration under simulated field conditions. The objective was to provide guidelines for the mining industry for the proper selection and use of filter cloths to assure safer embankments at mine waste disposal sites. The filter cloths were tested with three coal waste samples in standpipes used to simulate coal mine waste disposal environments. Two of the clothes showed a tendency to become clogged with fines from the wastes. One waste caused clogging by precipitating an iron-silicon compound on the test cloths. No apparent cloth deterioration resulted from exposures to the simulated coal waste environments. (The exposures ranged from 2 to 12 months.) In other tests, exposures to waters in the ph range of 2 to 12 and to reagents used in coal-preparation plants resulted in insignificant or no deterioration, as measured by tensile strength. However, long exposures to sunlight (ranging from 4.6 To 6 months) caused major deterioration in two of the cloths (86- and 98-pct losses in tensile strength) and slight deterioration in the third cloth (9-pct loss in strength).
Keywords
Coal-mining; Filter-fabrics; Filter-materials; Cloth-filters; Leak-prevention; Fabric-filters; Equipment-reliability; Performance-capability; Waste-disposal; Waste-treatment
Publication Date
19840101
Document Type
IH; Report of Investigations
Fiscal Year
1984
NTIS Accession No.
PB84-213503
NTIS Price
A03
Identifying No.
RI-8871
NIOSH Division
AVRC
Source Name
Avondale, MD: U.S. Department of the Interior, Bureau of Mines, RI 8871
State
MD
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