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Grouting Horizontal Drainage Holes in Coalbeds.

Authors
Aul-GN; Cervik-J
Source
NTIS: PB 80-110315 :16 pages
Link
NIOSHTIC No.
10000663
Abstract
This report describes a method developed by the Bureau of Mines for sealing horizontal degasification holes so that they do not create a gas explosion hazard when intercepted by mining. A cement slurry is pumped into the hole through an injection pipe that extends to the back of the hole. Pumping continues until the slurry returns through the annulus to the hole collar. The hole is then shut in and the grout allowed to harden. Application of the procedure to six horizontal degasification holes at Eastern Associated Coal Corp.'S Honey Run Shaft is discussed.
Publication Date
19790101
Document Type
IH; Report of Investigations
Fiscal Year
1979
NTIS Accession No.
PB80-110315
NTIS Price
A03
Identifying No.
RI 8375
NIOSH Division
PRC;
Source Name
NTIS: PB 80-110315
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