A damage mechanical model applied to analysis of mechanical properties of jointed rock masses

Wendong Yang, Qianbing Zhang, P. G. Ranjith, Rangang Yu, Guangyu Luo, Chenchen Huang, Gang Wang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The mechanical properties of jointed rock masses significantly affect the long-term behaviour and safety of engineering projects. In this paper, a damage mechanical theory is adopted to deal with some sets of joints distributed in rock masses. Based on the geometrical distribution of joints, a damage model which considers the influence of normal vector and area density of joints is used to describe the discontinuities. This damage model is programmed in finite difference software FLAC3D, and an example of jointed rock masses is used to verify the validity of the model, which shows that this model can well reflect the influence of joint angle and joint density. Finally, we use this model to predict the displacements and damage zones in the rock masses surrounding an underground cavern. The simulation results show a good agreement with field measurements.

Original languageEnglish
Pages (from-to)113-128
Number of pages16
JournalTunnelling and Underground Space Technology
Volume84
DOIs
Publication statusPublished - 1 Feb 2019

Keywords

  • Damage mechanics
  • Damage model
  • FLAC
  • Jointed rock masses
  • Numerical simulation
  • Underground cavern

Cite this

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title = "A damage mechanical model applied to analysis of mechanical properties of jointed rock masses",
abstract = "The mechanical properties of jointed rock masses significantly affect the long-term behaviour and safety of engineering projects. In this paper, a damage mechanical theory is adopted to deal with some sets of joints distributed in rock masses. Based on the geometrical distribution of joints, a damage model which considers the influence of normal vector and area density of joints is used to describe the discontinuities. This damage model is programmed in finite difference software FLAC3D, and an example of jointed rock masses is used to verify the validity of the model, which shows that this model can well reflect the influence of joint angle and joint density. Finally, we use this model to predict the displacements and damage zones in the rock masses surrounding an underground cavern. The simulation results show a good agreement with field measurements.",
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A damage mechanical model applied to analysis of mechanical properties of jointed rock masses. / Yang, Wendong; Zhang, Qianbing; Ranjith, P. G.; Yu, Rangang; Luo, Guangyu; Huang, Chenchen; Wang, Gang.

In: Tunnelling and Underground Space Technology, Vol. 84, 01.02.2019, p. 113-128.

Research output: Contribution to journalArticleResearchpeer-review

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T1 - A damage mechanical model applied to analysis of mechanical properties of jointed rock masses

AU - Yang, Wendong

AU - Zhang, Qianbing

AU - Ranjith, P. G.

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AU - Luo, Guangyu

AU - Huang, Chenchen

AU - Wang, Gang

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AB - The mechanical properties of jointed rock masses significantly affect the long-term behaviour and safety of engineering projects. In this paper, a damage mechanical theory is adopted to deal with some sets of joints distributed in rock masses. Based on the geometrical distribution of joints, a damage model which considers the influence of normal vector and area density of joints is used to describe the discontinuities. This damage model is programmed in finite difference software FLAC3D, and an example of jointed rock masses is used to verify the validity of the model, which shows that this model can well reflect the influence of joint angle and joint density. Finally, we use this model to predict the displacements and damage zones in the rock masses surrounding an underground cavern. The simulation results show a good agreement with field measurements.

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