Geological and structural setting of the CSM/OCRD test site: CSM experimental mine, Idaho Springs, Colorado

Technical Report · Thu Sep 01 04:00:00 EDT 1983

OSTI ID:5513099

Hutchinson, R M

This report is the second in a series describing research conducted by the Colorado School of Mines (CSM) for the Office of Crystalline Repository Development (OCRD) to determine the extent of blast damage in rock surrounding an underground opening. A special room, called the CSM/OCRD room, was excavated for the purpose of assessing blast damage in the rock around the room. Even though this mine is not proposed as a nuclear waste repository site, the instrumentation and methods of blast damage assessment developed in this project are applicable to proposed repository sites. In order to understand which instruments and techniques are most applicable and what types of fractures existed before blasting, a thorough description of the rock mass surrounding the room is necessary. This report describes the geologic history of the area surrounding the Colorado School of Mines' Experimental Mine. The purpose of the historical description is to explain the probable origin of faults, fractures, and joints that affect rock mass permeability around the excavation site. This report will also provide probable cause of original rock mass stress in existence prior to excavating the experimental room. Furthermore, it provides a basis for detailed mapping of the CSM/OCRD experimental room wall rock. 19 references, 19 figures.

• Research Organization: Colorado School of Mines, Golden (USA). Dept. of Geological Engineering
• DOE Contract Number: AC06-76RL01830; AC02-83CH10140
• OSTI ID: 5513099
• Report Number(s): BMI/OCRD-4(2); ON: DE84003907
• Country of Publication: United States
• Language: English

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BLAST EFFECTS
CAVITIES
COLORADO
FEDERAL REGION VIII
GEOLOGIC FAULTS
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
GEOLOGY
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GRANITES
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PLUTONIC ROCKS
ROCK CAVERNS
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TEST FACILITIES
USA