Actions for Measurements of very large deformations in potash salt in conjunction with an ongoing mining operation [electronic resource].

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Measurements of very large deformations in potash salt in conjunction with an ongoing mining operation [electronic resource].

Published
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1980.
Physical Description
Pages: 10 : digital, PDF file
Additional Creators
United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Room and pillar deformation were measured in conjunction with a relatively new type of mining operation in a southeastern New Mexico potash mine. The extraction ration was approximately 90 percent in a first mining operation. Due to severe deformations encountered, instrumentation had to be developed/modified for these measurements. This paper concentrates on experiment design, design of special instrumentation, field installation of equipment, and presentation of the data. Measurements made include extensometers in the pillar, in the floor and ceiling in the room between pillars, absolute level measurements, floor ceiling closure, and stress (strain) measurements. Associated laboratory rock mechanics measurements of samples from the mine are being done separately. Two separate room pillar complexes were instrumented. In the first complex, floor-ceiling deformations of approximately 1 inch/day and pillar deformations around 1/2 inch/day were measured. In the second complex, instrumentation was installed while the pillar was a part of a long wall and the subsequent sequential mining (long wall-pillar with only one adjoining room on one side - pillar in the middle of room pillar complex) was observed. Data return from this operation was good.
Report Numbers
E 1.99:sand-79-2254c
E 1.99: conf-800507-4
conf-800507-4
sand-79-2254c
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1980.
"sand-79-2254c"
" conf-800507-4"
Rock mechanics symposium, Rolla, MO, USA, 27 May 1980.
Sattler, A.R.; Christensen, C.L.
Sandia Labs., Albuquerque, NM (USA)
Funding Information
EY-76-C-04-0789
View MARC record | catkey: 14420550