岩石洞室地基稳定性研究作为岩土工程领域的长期性基础课题,在山区岩溶地基、山地人防洞室地基、市政公路铁路隧道建设过程中都有所涉及。洞室自身的稳定性研究目前已较为成熟,而岩石洞室地基稳定性研究起步较晚,特别是受陡倾结构面影响的岩石洞室地基。结合工程实例分析,指出了目前洞室地基稳定性分析存在的问题,建立了受陡倾结构面影响的岩石洞室地基稳定性的计算方法,分析了其影响因素及规律;提出了受陡倾结构面影响的洞室地基稳定性分析方法;针对不同基础形式,分析了洞室地基的稳定性,并采用3DEC离散元计算软件进行了验证。研究成果对洞室地基的勘察、设计具有指导意义。
The stability of rock cavern foundations has long been a fundamental research topic in geotechnical engineering. It is critical for various construction projects, including karst mountain foundations, civil defense tunnel shelters, and urban infrastructure such as highways, railways, and tunnels. While the stability of the cavern itself has been extensively studied and is relatively mature, research on rock cavern foundation stability is relatively nascent, particularly concerning foundations influenced by steep inclined structural surfaces. Based on engineering examples, the study identifies existing problems in current analyses of cavern foundation stability. A calculation method for the stability of rock cavern foundations affected by steep inclined structural surfaces is established to analyze their influencing factors and patterns. The research proposes an analysis method for cavern foundation stability under the influence of steep inclined structures. Different foundation forms are analyzed for their stability, and the results are validated using the 3DEC discrete element calculation software. The findings offer practical guidance for the design and development of cavern foundations.
[1] 邱陈瑜, 郑颖人, 宋雅坤, 等. 桩基荷载作用下隧洞破坏模式研究与安全分析[J]. 岩石力学与工程学报, 2010, 29(增1): 3132-3144.
[2] 唐秋元, 钱伟, 赵尚毅. 重庆时尚园工程洞室地基稳定性分析[J]. 地下空间与工程学报, 2004(4): 492-495,565.
[3] 王燕增, 唐秋元. 洞室地基对拟建建筑地基承载力的影响分析[J]. 土木工程, 2018, 7(1): 100-108.
[4] 蒋文明, 洪波. 岩质洞室地基破坏模式对比分析[J]. 地下空间与工程学报, 2008, 4(6): 1033-1035,1070.
[5] 重庆市住房和城乡建设委员会.工程勘察标准(DBJ/T-043-2024)[S]. 重庆, 2024.
[6] 重庆市住房和城乡建设委员会.建筑地基基础设计标准(DBJ/T-047-2024)[S]. 重庆, 2024.
[7] 宋建波, 彭雄武, 陈龙, 等. 岩体地基极限承载力[M]. 北京:地质出版社, 2009.
[8] 包太, 刘新荣, 薛令光. 地下洞室与其上部地基相互作用的FLAC分析[J]. 贵州工业大学学报(自然科学版), 2002(6): 48-51.
[9] 王万德, 李海军, 张岩. 洞室地基失稳模式及影响因素分析[J]. 辽宁省交通高等专科学校学报, 2006(2): 34-36.
[10] Bhasin R, Heg K. Numerical modelling of block size effects and influence of joint properties in multiply jointed rock[J]. Tunnelling and Underground Space Technology, 1998,13(2):181-188.
[11] Zhang Y, Liu X,Guo P, et al. Numerical characterization of slope rock mass through considerations of hydraulic and mechanical properties[J]. Landslides, 2021, 18(7): 2465-2481.
[12] Longxiao G, Yihan W, Kaihui R, et al. Study on dynamic response of rock slope with inverse non-persistent joints under earthquake[J]. Frontiers in Earth Science,2022,10: 838387.
[13] 王桂林, 杨清海, 文海家, 等. 工程地质[M]. 北京: 中国建筑出版社, 2023.
[14] 孙广忠, 岩体结构力学[M]. 北京: 科学出版社, 1988.
[15] 贾洪彪, 唐辉明, 刘佑荣, 等. 岩体结构面三维网络模拟理论与工程应用[M]. 北京: 科学出版社, 2008.
[16] 杜时贯. 岩体结构面抗剪强度经验估算[M]. 北京: 地震出版社, 2005.
