2 edition of Analysis of travel times from rockbursts at Kirkland Lake, Ontario. found in the catalog.
Analysis of travel times from rockbursts at Kirkland Lake, Ontario.
John Humphrey Hodgson
Written in English
Thesis (M.A.), Dept. of Physics, University of Toronto
|The Physical Object|
|Number of Pages||19|
A combined model with the methods of principal component analysis (PCA) and fuzzy comprehensive evaluation (FCE) is developed to process data from 12 different locations in kimberlite pipes. Based on calculated 12 fuzzy evaluation vectors, 8 locations show a moderate burst potential, 2 locations show no burst potential, and 2 locations show. Dust control at longwalls with water infusion and foam. Technical progress report through Novem SciTech Connect. Not Available. Foam spray equipment and materials for dust suppression on longwall double drum shearer faces have been procured. This equipment includes metering pumps, foam generators and mounting brackets, foam solutions, flow meters, real time and.
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Get this from a library. Rockbursts: case studies from North American hard-rock mines. [Wilson Blake; D G F Hedley] -- "Using a series of case studies, this reference documents the experiences of 15 of the most rockburst-prone mines in the U.S.
and Canada. It provides a. Get this from a library. Rockbursts: Case Studies from North American Hard-Rock Mines. [Wilson Blake; D G F Hedley] -- Annotation. "Using a series of case studies, this reference documents the experiences of 15 of the most rockburst-prone mines in the U.S.
and Canada. It provides a. A revised Ontario Provincial Hazard Identification and Risk Assessment (HIRA) Report, dated Septemberis attached via an electronic link.
This document is founded on a comprehensive study of the hazards that currently and/or historically confronted the Province of Ontario, as well as those that have the potential to occur.
A line of eight recording sites in southern Saskatchewan and Manitoba, with ranges from to km, recorded a series of chemical explosions in Greenbush Lake, British Columbia, as part of. The Kirkland Lake Miners’ Memorial is a memorial in Kirkland Lake, Ontario, dedicated to the city’s mining labourers.
Overwhelming stress of waiting to Ontario. book rescued By Kevin Vincent J Mohorovicic discontinuity (Moho) is the global velocity discontinuity which separates the earth’s crust and mantle.
On the average it lies at the depth of 33 beneath the earth’s surface. In response, seismic monitoring systems have been extended and installed in the four mining districts (Red Lake, Elliot Lake, Sudbury, and Kirkland Lake) experiencing rockbursts.
T h e preliminary results from the study of the focal mechanism and source parameters of seismic events at Strathcona mine, Sudbury, have been published (Young et al. The Role of Geological Discontinuities and Tectonic Stresses in Mine Seismicity Metalliferous Figure 1 Coal A Gold Potash D o c u m e n t e d cases of significant mine seismicity a n d rockbursts on a worldwide basis E R P M Mines, Witwatersrand District, South Africa The first studies of mine seismicity and certainly the most Cited by: 1.
CANADIAN Mining Journal. FROM THE EDITOR. February Vol. — No. 2 38 Lesmill Rd. Unit 2, Toronto, Ontario M3B 2T5 Tel.
() Fax () This thesis is divided into three sections. It presents the development of empirical and numerical design techniques at Goldcorp Inc's Red Lake Mine. The first section expands upon the understanding of the rockburst mechanism at the mine. Four known rockbursts were analysed to better understand the mechanism.
Some variables such as excavation span, dip of orebody, time, location and geology. The crux of sill mat design is the estimation of vertical stress before sill mat failure. Current theories for estimating vertical pressure in rock and soils at shallow depths all produce a variety of answers.
The current theories for estimating vertical stress do not account for changes in stope geometry. For example, the footwall, hangingwall, and ore widths change drastically from lift to Author: Kennth William Marcinyshyn.
Hard Rock Miner’s Handbook Rules of Thumb Tricks of the Trade Case Histories Example Problems Long before science and engineering evolved, Rules of Thumb constituted the sole body of mining knowledge.
Inthe Royal Commission on mineral resources in Ontario, Canada stated that we had been “mining by rules of thumb for long enough.”.
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S., "Travel Times in the Lake Mead Region, Arizona and Nevada," Earthquake Notes, V. 20, n. 1, p. 8 (). Using data from the explosion of lb of TNT near Boulder City, Nevada, the velocity of P waves below 3 km was found to be km/sec and the .This short history of seismic research on the Moho is primarily based on the comprehensive overview of the worldwide history of seismological studies of the Earth's crust using controlled sources from toby Prodehl and Mooney ().