Features of stress state of support under varying displacement of free contour of underground excavation

All-Russian Conference on Challenges for Development in Mining Science and Mining Industry devoted to the 85th anniversary of Academician Mikhail Kurlenya

Seryakov, V.M.^1

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

关键词: Contact interaction;    Initial stress;    Mined-out voids;    Rock mass;    Stress field distribution;    Stress state;    Underground excavation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/53/1/012005/pdf
DOI  :  10.1088/1755-1315/53/1/012005

来源: IOP

【 摘 要 】

The scope of the discussion covers the issues of stress state assessment in support and rock mass surrounding an underground mined-out void, considering partial relaxation of rocks from initial stresses prior to contact interaction between the underground excavation contour and the support elements. The dedicated methods and algorithms are used to determine stress field distribution in elements of support in an arched underground excavation under varying pre-contact displacements of the excavation contour.