Strain Gradient Model of Zonal Disintegration of Rock Mass near Deep-Level Tunnels

C. Z. Qi*, K. R. Li, J. P. Bai, A. I. Chanyshev, Pei Liu

*Awdur cyfatebol y gwaith hwn

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

27 Wedi eu Llwytho i Lawr (Pure)

Crynodeb

This paper presents one strain gradient model of zonal disintegration of rock mass near deep level tunnel. The governing equations and boundary conditions of the model are established. Numerical methods (quasi-Newton method and shooting method) are adopted to solve the obtained fourth-order equilibrium equations with higher order boundary conditions in terms of displacement. The stress field in elastic and plastic zones is obtained. The effects of model parameters on stresses distribution in surrounding the tunnel rock mass are examined. The necessary conditions for the formation of zonal disintegration are elucidated.

Iaith wreiddiolSaesneg
Tudalennau (o-i)21-33
Nifer y tudalennau13
CyfnodolynJournal of Mining Science
Cyfrol53
Rhif cyhoeddi1
Dyddiad ar-lein cynnar7 Chwef 2017
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsE-gyhoeddi cyn argraffu - 7 Chwef 2017

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