Damage and stability analysis of Shuangjiangkou underground caverns

XIANG Lü; ZHU Wei-shen; MA Qing-song; ZHANG Qian-bing

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Damage and stability analysis of Shuangjiangkou underground caverns

更新时间：2026-06-25

- Damage and stability analysis of Shuangjiangkou underground caverns
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  山东大学岩土与结构工程研究中心,济南,250061
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU445
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
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XIANG Lü, ZHU Wei-shen, MA Qing-song, et al. Damage and stability analysis of Shuangjiangkou underground caverns[J]. 2011, 32(S2).
DOI：

XIANG Lü, ZHU Wei-shen, MA Qing-song, et al. Damage and stability analysis of Shuangjiangkou underground caverns[J]. 2011, 32(S2). DOI：

摘要

对四川省双江口水电站工程的地下洞群的节理岩体围岩稳定性进行研究，分别采用了弹塑性模型、节理岩体断裂损伤模型进行数值分析。在弹塑性模型中，采用锚固等效法来模拟锚杆及锚索的支护效果。断裂损伤模型以损伤及断裂力学原理为基础，运用损伤本构模型和损伤演化方程在FLAC3D软件的框架下开发出子程序，考虑了岩体中节理裂隙对洞室围岩稳定性的影响，进而得到用上述的模型和计算程序分析出的围岩塑性区、损伤演化区和位移规律。将两种模型的计算结果与相应工程模型试验的结果进行了比较分析。研究结果表明，损伤模型更接近工程实际情况，与模型试验结果更为接近

Abstract

To study the stability of jointed rock mass of the underground caverns in Shuangjiangkou Hydropower Project in Sichuan province

elastoplastic model and jointed rock mass fracture damage model are adopted for numerical analysis. In the elastoplastic model

the supporting effect of the cable and anchor string are simulated by equivalent anchoring method. Based on damage mechanics and fracture mechanics

damage constitutive model and damage evolution equation are utilized to develop subprogram under the framework of the fast Lagrangian analysis of continua in three dimensions(FLAC3D); and the stability influence of underground caverns caused by joints and cracks are under consideration. Then

rock plastic zone

damage evolution area and displacement law are proposed on the basis of models and subprogram mentioned above. At last

the results calculated by the two models are compared with data from geology structural model experiment. The results show that the jointed rock mass fracture damage model is more accurate

which is closer with model experiment results

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