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New support concepts for hard rock mining applications.

Authors
Barczak-TM; Tadolini-SC
Source
Proceedings of the CIM Conference and Exhibition, Montreal, Quebec, Canada, April 29-May 2, 2007. Montreal, Quebec, Canada: Canadian Institute of Mining, Metallurgy and Petroleum, 2007 Apr; :30-37
Link
NIOSHTIC No.
20031963
Abstract
A critical safety component for all underground mining is intrinsic and standing support systems. Specifically, tabular hardrock mining exploits a wide variety of deposits that require various methodologies to safely mine the ore material. Several new support systems have been developed in recent years for hard rock applications which have been modified or applied in a variety of ground control applications. These include prestressing devices, improved cribs, and free standing supports. Various standing support and prop-type systems have been designed for hard rock applications with seismic loading conditions to accept prestressing. The prestressing, using water-filled cells, creates an active load upon installation and is considered essential to maintain support during and after the blasting of the mine faces. Heavy seismic activity is also present in these mines and the prestressing units can provide some energy absorption capability to help preserve the integrity of the support. This paper presents an overview of these innovations in support technology.
Keywords
Rock-mechanics; Rock-bursts; Mine-shafts; Safety-engineering; Safety-research; Pressure-testing; Testing-equipment; Coal-mining; Control-technology; Controlled-environment; Structural-analysis; Hard-rock-mines; Mining-industry; Mining-equipment; Underground-mining
Publication Date
20070429
Document Type
Conference/Symposia Proceedings
Fiscal Year
2007
NTIS Accession No.
NTIS Price
NIOSH Division
PRL
Priority Area
Mining
Source Name
Proceedings of the CIM Conference and Exhibition, Montreal, Quebec, Canada, April 29-May 2, 2007
State
PA
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