The White Pine Mine explosively induced, controlled collapse experiment

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On September 3, 1995, the White Pine Mine, which is owned by Copper Range Company, conducted the first of a planned series of explosive removal of existing pillars in their underground mining operations. The purpose of this operation is to evaluate the effectiveness of pillar rubbilization and roof collapse for planned in-situ leaching of the copper ore from the rock mass. This type of seismic source is unique in that a large, delay fired, explosive source was expected to be followed by collapse of the rock immediately above the explosion into the void created. Characterization of this type of mining ... continued below

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12 p.

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Pearson, D. C.; Stump, B. W. & Phillips, W. S. September 1996.

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Description

On September 3, 1995, the White Pine Mine, which is owned by Copper Range Company, conducted the first of a planned series of explosive removal of existing pillars in their underground mining operations. The purpose of this operation is to evaluate the effectiveness of pillar rubbilization and roof collapse for planned in-situ leaching of the copper ore from the rock mass. This type of seismic source is unique in that a large, delay fired, explosive source was expected to be followed by collapse of the rock immediately above the explosion into the void created. Characterization of this type of mining source is of interest to the Comprehensive Test Ban Treaty (CTBT) R&D Seismic Program due to its unique properties. These include the controlled nature of the source in time, location, and magnitude, the fact that the source is located in an active region of underground mining, and that natural collapse of large portions of this mine have occurred in the recent past. The Mine operator is concerned with the characterization of the vibration induced by both the explosive and implosive components of the procedure and determination of the depth to which chimneying of the roof proceeded. This report will document: The reasons for conducting both the explosively induced collapse and the Los Alamos National Laboratory CTBT R&D Experimental Field Program experiment; The local and regional seismic, acoustic, and videographic data acquired; Analysis of the explosion/collapse seismic signal generated; Analysis and location of the aftershocks associated with the collapse; and Conclusions made concerning this type of mining explosion in relation to verification of a Comprehensive Test Ban Treaty.

Physical Description

12 p.

Notes

OSTI as DE96014244

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  • 18. monitoring comprehensive test band treaty, Annapolis, MD (United States), 4-6 Sep 1996

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  • Other: DE96014244
  • Report No.: LA-UR--96-2388
  • Report No.: CONF-9609241--1
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 395596
  • Archival Resource Key: ark:/67531/metadc677932

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  • September 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Feb. 29, 2016, 12:46 p.m.

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Pearson, D. C.; Stump, B. W. & Phillips, W. S. The White Pine Mine explosively induced, controlled collapse experiment, article, September 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc677932/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.