有压供水管线渗漏影响下盾构诱发地层变形机理研究  

Research on the Mechanism of Ground Deformation Induced by Shield Tunnelling under the Influence of Leakage from Pressurized Water Supply Pipelines

作　　者：袁作波 简汶洋 王铎 梁禹 胡松 林存刚 秦英斌 赵辰洋 YUAN Zuobo;JIAN Wenyang;WANG Duo;LIANG Yu;HU Song;LIN Cungang;QIN Yingbin;ZHAO Chenyang(Guangdong Zhuzhao Railway Limited Liability Company,Guangzhou 510000;School of Civil Engineering,Sun Yat-sen University,Zhuhai 519082)

机构地区：[1]广东珠肇铁路有限责任公司,广州510000 [2]中山大学土木工程学院,珠海519082

出　　处：《现代隧道技术》2024年第5期174-182,共9页Modern Tunnelling Technology

基　　金：国家自然科学基金(52208380);广东省基础与应用基础研究基金(2024A1515030137).

摘　　要：有压供水管线在砂质黏土地层中的渗漏范围、管线渗漏与盾构掘进相互作用诱发地层变形的机理研究还不够完善,无法满足工程需求。基于此,通过模型试验和数值模拟相结合的方法探索管线渗漏和盾构掘进相互作用下的渗漏影响范围、地层变形机制和灾变防控措施;以管线水压、渗漏持续时间等参数为变量,开展多工况有压管线渗漏模型试验。结果表明,管线渗漏范围随时间增加呈指数变化趋势,且变化幅度与水压呈正相关。进一步建立考虑管线渗漏影响的盾构掘进精细化有限元数值模型,研究管线渗漏时间等因素对隧道和周围土体变形的影响规律,并提出相应的灾变防控措施。Current research on the leakage range of pressurized water supply pipelines in sandy clay strata and the interaction between pipeline leakage and shield tunnelling that induces ground deformation is still inadequate to meet engineering needs.To address this,a combination of model tests and numerical simulations was used to explore the leakage impact range,ground deformation mechanisms,and disaster prevention and control measures under the interaction of pipeline leakage and shield tunnelling.Various parameters,including pipeline water pressure and leakage duration,were tested under multiple working conditions in the pressurized pipeline leakage model experiment.Results indicate that the leakage range increases exponentially over time,and the degree of change is positively correlated with water pressure.Furthermore,a refined finite element numerical model considering the effects of pipeline leakage was established to study the impact of leakage duration and other factors on tunnel and surrounding soil deformation,leading to corresponding disaster prevention measures.

关 键 词：盾构隧道 有压供水管线 渗漏 非饱和土 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]