Stress-relief borehole measurements before and after quarrying a block of Barre Granite at Barre, Vermont

Open-File Report 79-1524
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Abstract

In situ stresses were measured in a 10X10X5.7-m block of Barre Granite of Devonian age at the Wetmore and Morse granite quarry at Barre, Vt., before and after it was quarried. The stresses were measured with the U.S. Bureau of Mines borehole deformation gage in both the horizontal and vertical planes. Anomalously high stresses in both planes were observed in the block before quarrying. Relatively small stresses remained in the block after quarrying. Stresses measured in the floor beneath the block and from a horizontal boring in the 67-m vertical backwall behind the block, however, showed that the quarrying caused little change other than to the block.

Additional measurements were also taken in granite in the Barre, Vt., area near the Wetmore and Morse and Adam quarries and in schist near the Pirie quarry.

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Publication type Report
Publication Subtype USGS Numbered Series
Title Stress-relief borehole measurements before and after quarrying a block of Barre Granite at Barre, Vermont
Series title Open-File Report
Series number 79-1524
DOI 10.3133/ofr791524
Year Published 1979
Language English
Publisher U.S. Geological Survey
Description iii, 39 p.
Country United States
State Vermont
City Barre
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