[1]万友生.基于弹塑性损伤-渗流耦合模型的隧道洞口段围岩稳定性研究[J].中国安全生产科学技术,2021,17(8):117-123.[doi:10.11731/j.issn.1673-193x.2021.08.018]
WAN Yousheng.Study on surrounding rock stability of tunnel entrance section based on elastoplastic damage-seepage coupling model[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(8):117-123.[doi:10.11731/j.issn.1673-193x.2021.08.018]
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基于弹塑性损伤-渗流耦合模型的隧道洞口段围岩稳定性研究
WAN Yousheng.Study on surrounding rock stability of tunnel entrance section based on elastoplastic damage-seepage coupling model[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(8):117-123.[doi:10.11731/j.issn.1673-193x.2021.08.018]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 17
- 期数:
- 2021年8期
- 页码:
- 117-123
- 栏目:
- 职业安全卫生管理与技术
- 出版日期:
- 2021-08-31
文章信息/Info
- Title:
- Study on surrounding rock stability of tunnel entrance section based on elastoplastic damage-seepage coupling model
- 文章编号:
- 1673-193X(2021)-08-0117-07
- 关键词:
- 洞口段; 围岩稳定性; 弹塑性损伤-渗流耦合模型; 向后欧拉算法; 降雨条件
- Keywords:
- entrance section; surrounding rock stability; elastoplastic damage-seepage coupling model; backward Euler algorithm; rainfall condition
- 分类号:
- X951
- 文献标志码:
- A
- 摘要:
- 为分析复杂条件下隧道洞口段稳定性问题，建立基于Mohr-Coulomb准则的岩石弹塑性损伤-渗流耦合模型，利用完全隐式的向后欧拉算法编制弹塑性损伤模型的应力积分程序。在此基础上，利用ABAQUS平台的子程序接口实现耦合模型的有限元计算。将该模型应用于福建某洞口段隧道工程的围岩稳定性评价中，分析不同降雨强度下洞口段结构的安全系数、位移及损伤值的变化规律。结果表明：隧道洞口段结构的安全系数、损伤区和位移均会随着降雨进程的发展发生变化，雨季应加强监测频率。
- Abstract:
- In order to analyze the stability of tunnel entrance section under complex conditions,an elastoplastic damage-seepage coupling model of rock based on the Mohr-Coulomb criterion was established,and the stress integral program of elastoplastic damage model was developed by using the fully implicit backward Euler algorithm.On this basis,the finite element calculation of the coupling model was realized by using the subprogram interface of ABAQUS platform.Finally,the model was applied to the evaluation on surrounding rock stability of a entrance section tunnel project in Fujian province,and the variation laws of safety coefficient,displacement and damage of the tunnel entrance section structure under different rainfall intensities were analyzed.The results showed that the safety factor,damage zone and displacement of tunnel entrance structure will change with the development of rainfall process,and the monitoring frequency should be strengthened in rainy season.
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备注/Memo
- 备注/Memo:
-
收稿日期： 2020-11-03
作者简介： 万友生，本科，教授级高级工程师，主要研究方向为岩土工程的安全稳定性。
