FEM simulation of deformation of self-stress rock mass with disjunction nearby a tunnel

Challenges for Development in Mining Science and Mining Industry

Lavrikov, S.V.^1 ; Mikenina, O.A.^1 ; Revuzhenko, A.F.^1

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

关键词: Deformation of rock mass;    Elastic energy;    Elastic energy release;    FEM simulations;    Finite element algorithms;    Rock mass;    Self-stresses;    Stress strain state;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/262/1/012039/pdf
DOI  :  10.1088/1755-1315/262/1/012039

来源: IOP

【 摘 要 】

In the work the constitutive equations which allow to describe the structurally inhomogeneous rock mass taking into account the property of rocks to accumulate and release elastic energy, are applied. The finite element algorithm and programs for solving plane boundary-value problems are developed. The authors solve a problem on deformation of rock mass with a disjunction surrounding a tunnel. It is shown that driving of horizontal tunnel nearby the disjunction can provoke the accumulated elastic energy release, which affects stress-strain state of rock mass around the tunnel