Process for assessment of stress-strain state of a rock mass and its defects using data on shear measurements at outcrop surface

Challenges for Development in Mining Science and Mining Industry

Chanyshev, A.I.^1^2 ; Abdulin, I.M.^1 ; Belousova, O.E.^1

Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia^1

Novosibirsk State University of Economics and Management, Novosibirsk, Russia^2

关键词: Benchmark data;    Circular holes;    Continuous monitoring;    Elastic-plastic problem;    Failure domains;    Shear measurements;    Stress release;    Stress strain state;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/262/1/012009/pdf
DOI  :  10.1088/1755-1315/262/1/012009

来源: IOP

【 摘 要 】

It is proposed to assess the stress-strain state of a rock mass and its defects by measuring displacements of mine working contour. Algorithms and software to solve the elastic and elastic-plastic problems are worked out for a case when a working contour shifts to failure domain. To compute of the working contour displacements, when all the shears except creep-strain occurred, the researchers set forth the process for continuous stress release in the contour of the preset geometry at continuous monitoring and recording of shear benchmark data at its boundary. The process is demonstrated on shear measurements on a circular hole in a rubber plate under tension load.