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Evaluation and demonstration of underhand stoping to control rock bursts.

Authors
Bush-DD; Blake-W; Board-MP
Source
NTIS: PB/85-216489, 1982; :1-191
Link
NIOSHTIC No.
10004594
Abstract
Based on the results of this study, the underhand cut and fill stoping method, with mass destressing, is an effective method for controlling rock bursts and falls of ground for deep mining in the Coeur d'Alene Mining District. The procedure can be utilized to pull highly stressed pillars by converting from conventional overhand stoping methods or used as a primary recovery system. During the demonstration, only one minor rock burst occurred, with no injuries. The system facilitates accurate placement of vertical boreholes for effective mass destressing. Each mining cut is filled with cemented sandfill overlying a timbered mat that forms the back for the succeeding cut. For this demonstration, a cemented fill was mixed on the surface and piped to the stope. Costs for pillar recovery by this method are comparable and are considered cost effective over conventionally timbered overhand mining as a pillar recovery method.
Keywords
Rock-bursts; Rock-falls; Rock-mechanics; Mining-industry; Environmental-control; Environmental-technology
Publication Date
19820101
Document Type
CP; Final Contract Report
Funding Type
Contract
Fiscal Year
1982
NTIS Accession No.
PB85-216489
NTIS Price
A10
Identifying No.
OFR 62-85
NIOSH Division
SRC
Source Name
NTIS: PB/85-216489
State
WA
Performing Organization
Terra Tek, Inc.
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