水下浅埋无压圆形隧道衬砌合理渗水模式分析  

Analysis of reasonable seepage mode of underwater shallow buried no-pressure circular tunnel lining

作　　者：明冬雨 唐曌[2,3] 王少锋 朱泽奇 MING Dongyu;TANG Zhao;WANG Shaofeng;ZHU Zeqi(State Key Laboratory of Geomechanics and Geotechnical Engineering,Wuhan Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan 430071,China;China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430071,China;National Engineering Research Center for Underwater Tunnel Technology,Wuhan 430071,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071 [2]中铁第四勘察设计院集团有限公司,湖北武汉430071 [3]水下隧道技术国家地方联合工程研究中心,湖北武汉430071 [4]中国科学院大学,北京100049

出　　处：《武汉大学学报（工学版）》2021年第4期283-289,共7页Engineering Journal of Wuhan University

基　　金：国家自然科学基金面上项目(编号:51279202)。

摘　　要：在有衬砌隧道渗流场分析中,衬砌的渗水模式可分为等水压渗水和等水头渗水2种情况。基于现有研究成果,推导得出等水压渗水和等水头渗水模式下有衬砌无压隧道渗流场解析解,并根据数值解验证了解析解的有效性;结合衬砌与围岩相互作用关系,分析了2种渗水模式对隧道渗流场以及衬砌外水荷载计算结果的影响。研究结果表明:无论是衬砌单独工作还是衬砌与围岩联合作用,衬砌为等水头渗水模式能更好地满足衬砌外水荷载计算精度的要求。相关结论为确定考虑衬砌支护影响下水下隧道渗流场合理计算模型提供条件。In the analysis of seepage field of lining tunnel,the seepage modes of lining can be divided into constant water pressure seepage mode and constant water head seepage mode.Based on the existing research results,the analytical solutions of the seepage field of the lining and no-pressure tunnel are deduced under the constant water pressure seepage and the constant water head seepage,and the validities of the analytical solutions are verified according to the numerical solutions.Combined with the interaction between lining and surrounding rock,the influences of two seepage modes on the seepage field of the tunnel and the calculation results of lining external water load are analyzed.The results show that whether the lining works alone or in combination with surrounding rock,the model of constant water penetration of the lining can better meet the requirements of the calculation accuracy of the external water load of the lining.The relevant conclusions provide conditions for determining the reasonable calculation model of seepage field of underwater tunnel under the influence of lining support.

关 键 词：渗透特性 共形映射 衬砌外水荷载 解析解 相互作用关系 

分 类 号：TU443[建筑科学—岩土工程]