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

doi:10.1134/S1062739117011808

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

^*Corresponding author for this work

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Abstract

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.

Original language	English
Pages (from-to)	21-33
Number of pages	13
Journal	Journal of Mining Science
Volume	53
Issue number	1
Early online date	7 Feb 2017
DOIs	https://doi.org/10.1134/S1062739117011808
Publication status	E-pub ahead of print - 7 Feb 2017

Keywords

Deep-level tunnel
rock mass
strain gradient model
zonal disintegration

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10.1134/S1062739117011808Licence: CC BY-NC-ND

StrainGradientModelofZonalDisintegrationofRockMassAccepted author manuscript, 538 KBLicence: CC BY-NC-ND

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title = "Strain Gradient Model of Zonal Disintegration of Rock Mass near Deep-Level Tunnels",

abstract = "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.",

keywords = "Deep-level tunnel, rock mass, strain gradient model, zonal disintegration",

author = "Qi, {C. Z.} and Li, {K. R.} and Bai, {J. P.} and Chanyshev, {A. I.} and Pei Liu",

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T1 - Strain Gradient Model of Zonal Disintegration of Rock Mass near Deep-Level Tunnels

AU - Qi, C. Z.

AU - Li, K. R.

AU - Bai, J. P.

AU - Chanyshev, A. I.

AU - Liu, Pei

PY - 2017/2/7

Y1 - 2017/2/7

N2 - 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.

AB - 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.

KW - Deep-level tunnel

KW - rock mass

KW - strain gradient model

KW - zonal disintegration

U2 - 10.1134/S1062739117011808

DO - 10.1134/S1062739117011808

M3 - Article

AN - SCOPUS:85042076195

SN - 1062-7391

VL - 53

SP - 21

EP - 33

JO - Journal of Mining Science

JF - Journal of Mining Science

IS - 1

ER -

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

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Keywords

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