海底隧道涌水量解析及工法过渡段优化研究  

Analysis of water inflow and optimization of engineering transition section in undersea tunnel

作　　者：陈云娟[1,2] 王乐宁 刘丞 潘传琼 CHEN Yunjuan;WANG Lening;LIU Cheng;PAN Chuanqiong(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Key Laboratory of Building Structural Retrofitting and Underground Space Engineering(Shandong Jianzhu University),Ministry of Education,Jinan 250101,China;Shandong Institute for Product Quality Inspection,Jinan 250102,China;Jinan Lujian Engineering Quality Inspection Co.,Ltd.,Jinan 250109,China)

机构地区：[1]山东建筑大学土木工程学院,山东济南250101 [2]山东建筑大学建筑结构加固改造与地下空间工程教育部重点实验室,山东济南250101 [3]山东省产品质量检验研究院,山东济南250102 [4]济南鲁建工程质量检测有限公司,山东济南250109

出　　处：《山东建筑大学学报》2023年第6期104-111,共8页Journal of Shandong Jianzhu University

基　　金：国家自然科学基金面上项目(42172310,51609130);山东省青创科技团队项目(2019KJG015);山东省矿山灾害预防控制省部共建国家重点实验室开放基金项目(MDPC0909);山东建筑大学博士科研基金项目(XNBS1704)。

摘　　要：海底隧道地处高围压、高水压状态,其上方有无限水源补给,施工过程中极易出现渗水、涌水现象,根据涌水量预测结果调整相应施工方案能够降低突涌水发生的概率。文章基于汕头湾海底隧道工程,对比多种隧道涌水量解析式结果,给出工程适用性最强的涌水量预测公式;同时利用该解析式结果进行正交试验,分析了影响隧道转换过渡段稳定性的3个因素,确定了各因素影响拱顶沉降量差值及涌水量两个指标的排序。结果表明:马卡斯特解析式结果更偏向安全,与工程勘测数据接近;工法转换过渡段的总长度对围岩交界面处的稳定性影响比较显著,而开挖方式及进尺对围岩交界面处的稳定性影响不显著;当转换过渡段长度约为10 m时,过渡段对围岩交界面处的稳定性改善效果较好,而>10 m时,对围岩稳定性改善效果并不显著。The undersea tunnel is located in a state of high confining pressure and high water pressure,and there is unlimited water supply above it.Seepage and water inrush are easy to occur during the construction process.Therefore,adjusting the corresponding construction plan based on the prediction results of water inrush can reduce the probability of water inrush.Based on the Shantou Bay Undersea Tunnel project,this paper compares the results of water inflow in various tunnels from the analytic formula and gives the most applicable prediction formula for the project.At the same time,the results are used to carry out orthogonal test,and the three factors affecting the stability of the transition section are analyzed,the order of every factors affecting the two indexes of differences of crown settlement and water inflow is determined.The results show that the result from the Macastor Analytic Formula is more safe and close to the engineering survey data.It is also found that the total length of the engineering transition section has a significant influence on the stability of the interface of surrounding rock,but the influence of excavation method and excavation progress on it is not significant.When the length of the transition section is about 10 m,the transition section has a good effect on improving the stability of the interface of surrounding rock.When the length of the transition section is greater than 10 m,the improvement effect is not significant.

关 键 词：涌水量 关联解析式 海底隧道 工法转换 

分 类 号：U452.4[建筑科学—桥梁与隧道工程]