高地应力下深部硐室底鼓破坏围岩稳定性分析
TU45; 为研究西部山区高地应力作用下深部硐室的稳定性问题,根据普氏压力拱理论,综合考虑深部硐室冒顶,片帮以及底鼓破坏,建立了高地应力下深部硐室底鼓破坏模式,基于极限分析上限法和非线性Hoek-Brown破坏准则,推导了该破坏模式下深部硐室的围岩压力理论公式,求解了该破坏模式下深部硐室围岩压力上限解,并将本文结果与数值模拟和已有成果进行对比分析.此外,通过该破坏模式研究了各参数对围岩压力和潜在破坏面的影响.结果表明:(1)随着初始地应力场参数中σv和λ增大,深部地下硐室围岩压力q逐渐增大,硐室围岩潜在破坏面逐渐增大,其中σv表现尤为显著;(2)Hoek-Brown破坏准则参数中GSI、σci...
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| Published in | 防灾减灾工程学报 Vol. 44; no. 3; pp. 660 - 669 |
|---|---|
| Main Authors | , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
湖南科技大学资源环境与安全工程学院,湖南湘潭 411201%中铁五局集团第一工程有限责任公司,湖南长沙 410117
01.06.2024
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1672-2132 |
| DOI | 10.13409/j.cnki.jdpme.20221213002 |
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| Abstract | TU45; 为研究西部山区高地应力作用下深部硐室的稳定性问题,根据普氏压力拱理论,综合考虑深部硐室冒顶,片帮以及底鼓破坏,建立了高地应力下深部硐室底鼓破坏模式,基于极限分析上限法和非线性Hoek-Brown破坏准则,推导了该破坏模式下深部硐室的围岩压力理论公式,求解了该破坏模式下深部硐室围岩压力上限解,并将本文结果与数值模拟和已有成果进行对比分析.此外,通过该破坏模式研究了各参数对围岩压力和潜在破坏面的影响.结果表明:(1)随着初始地应力场参数中σv和λ增大,深部地下硐室围岩压力q逐渐增大,硐室围岩潜在破坏面逐渐增大,其中σv表现尤为显著;(2)Hoek-Brown破坏准则参数中GSI、σci和mi的增大对深部硐室围岩稳定性有明显的提高效应,而D增加则会降低硐室围岩的稳定性;(3)随着底部压力相关系数μ增加,深部地下硐室顶板和两帮的围岩压力表现为减小的趋势.研究成果可为深部硐室的支护设计提拱有效的理论支撑. |
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| AbstractList | TU45; 为研究西部山区高地应力作用下深部硐室的稳定性问题,根据普氏压力拱理论,综合考虑深部硐室冒顶,片帮以及底鼓破坏,建立了高地应力下深部硐室底鼓破坏模式,基于极限分析上限法和非线性Hoek-Brown破坏准则,推导了该破坏模式下深部硐室的围岩压力理论公式,求解了该破坏模式下深部硐室围岩压力上限解,并将本文结果与数值模拟和已有成果进行对比分析.此外,通过该破坏模式研究了各参数对围岩压力和潜在破坏面的影响.结果表明:(1)随着初始地应力场参数中σv和λ增大,深部地下硐室围岩压力q逐渐增大,硐室围岩潜在破坏面逐渐增大,其中σv表现尤为显著;(2)Hoek-Brown破坏准则参数中GSI、σci和mi的增大对深部硐室围岩稳定性有明显的提高效应,而D增加则会降低硐室围岩的稳定性;(3)随着底部压力相关系数μ增加,深部地下硐室顶板和两帮的围岩压力表现为减小的趋势.研究成果可为深部硐室的支护设计提拱有效的理论支撑. |
| Abstract_FL | In order to study the stability issues of deep underground chambers under high in-situ stress in China's western mountainous areas,based on the theory of the Proctodyakonov's pressure arch,considering the roof caving,sidewall instability,and floor drumming of deep underground chambers,a floor drumming damage model of deep underground chambers under high in-situ stress was estab-lished.Leveraging limit analysis upper bound method and nonlinear Hoek-Brown failure criterion,the theoretical formula of surrounding rock pressure in the deep underground chambers under this damage mode was deduced.The upper bound solution for surrounding rock pressure was obtained.Compara-tive analysis was conducted between the results of this study,numerical simulations,and existing liter-ature.Furthermore,the influence of various parameters on surrounding rock pressure and potential failure surface was studied through this damage mode.The results showed that:1)With an increase in the initial stress field parameters σv and λ,the surrounding rock pressure q of deep underground cham-bers gradually increased,along with the expansion of potential failure surfaces,among which σv was particularly significant.2)The increase of GSI,σci and mi in the Hoek-Brown failure criterion parame-ters had a significant improvement effect on the stability of the surrounding rock,while an increase in D reduced the stability of the chamber's surrounding rock.3)With the increase in the bottom pressure correlation coefficient μ,the surrounding rock pressure of the roof and sidewalls tended to decrease.The findings provide effective theoretical support for the design of support systems for deep under-ground chambers. |
| Author | 尹华东 胡阿平 彭学军 张道兵 安方信 朱远嫘 张升 |
| AuthorAffiliation | 湖南科技大学资源环境与安全工程学院,湖南湘潭 411201%中铁五局集团第一工程有限责任公司,湖南长沙 410117 |
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| Author_FL | YIN Huadong ZHU Yuanlei ZHANG Sheng AN Fangxin HU Aping ZHANG Daobing PENG Xuejun |
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| DocumentTitle_FL | Analysis on the Stability of Surrounding Rock Damaged by the Floor Drum of Deep Underground Chamber under High In-situ Stress |
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| Keywords | 破坏模式 high in-situ stress damage mode Hoek-Brown failure criterion surrounding rock pressure 硐室底鼓 围岩压力 floor drumming in underground chamber 高地应力 Hoek-Brown破坏准则 |
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| Title | 高地应力下深部硐室底鼓破坏围岩稳定性分析 |
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