海底隧道流固耦合模型试验系统的研制及应用_李术才

第32卷第5期岩石力学与工程学报V ol.32 No.5 2013年5月Chinese Journal of Rock Mechanics and Engineering May，2013 海底隧道流固耦合模型试验系统的研制及应用

李术才，宋曙光，李利平，张乾青，王凯，周毅，张骞，王庆瀚

(山东大学岩土与结构工程研究中心，山东济南 250061)

摘要：围岩与水体的流固耦合作用对海底隧道的稳定性具有重要影响，很有必要开展流固耦合模型试验研究。根

据流固耦合模型试验的特点，研制可用于模拟准三维平面应力和平面应变的新型流固耦合模型试验系统。该系统

的整体尺寸为3.4 m×3.0 m×0.8 m(宽×高×厚)，由钢结构架、钢化玻璃试验箱和水压加载装置组成。其中钢结构架

由6榀可独立操作的高强度合金铸钢构件通过高强螺栓连接组合而成；钢化玻璃试验箱结构，既能保证试验要求

的密封性，又便于可视化观察施工过程中海底隧道围岩渗流、变形特征。同时，采用研制的新型流固耦合模型试

验系统和独立研制的新型流固耦合相似材料依托青岛胶州湾海底隧道开展流固耦合模型试验研究，揭示海底隧道

施工过程中洞壁压力和围岩位移场、渗流场等的变化规律。研究方法技术及结果对类似工程研究具有一定的指导

和借鉴意义。

关键词：隧道工程；海底隧道；流固耦合；模型试验；相似材料

中图分类号：U 45 文献标识码：A 文章编号：1000–6915(2013)05–0883–08 DEVELOPMENT ON SUBSEA TUNNEL MODEL TEST SYSTEM FOR SOLID-FLUID COUPLING AND ITS APPLICATION

LI Shucai，SONG Shuguang，LI Liping，ZHANG Qianqing，WANG Kai，ZHOU Yi，

ZHANG Qian，WANG Qinghan

(Research Center of Geotechnical and Structural Engineering，Shandong University，Jinan，Shandong250061，China)

Abstract：Solid-fluid interaction between surrounding rock and water body has significant influence on the stability of subsea tunnel. It is necessary to analyze the solid-fluid interaction involved in the construction of subsea tunnels using a model test. According to the feature of solid-fluid coupling model test，a new type of system for solid-fluid coupling model test was presented to simulate the quasi-3D plane stress and plane strain. The model test system was designed as 3.4 m in length，3.0 m in height and 0.8 m in width，and composed of rack body with steel structure，test chamber with toughened glass and loading devices of water pressure. The steel structure rack body consists of 6 steel structure members operated independently and connected by screw bolts with high strength. Toughened glass was used to assure leakproof of the test chamber and easily inspect the seepage and deformation of surrounding rock during subsea tunnel construction process. Furthermore，based on a new type of simulation material，the proposed new type of model test system was applied to the solid-fluid coupling model test for the Kiaochow Bay Subsea Tunnel. The pressure on tunnel wall，the variation of seepage and displacement of surrounding rock mass can be captured using the model test. The research methods and

收稿日期：2012–10–09；修回日期：2012–12–24

基金项目：国家自然科学基金国际合作与交流项目(50820135907)；国家自然科学基金重点项目(51139004)；国家自然科学基金青年科学基金项目(50909056)

作者简介：李术才(1965–)，男，博士，1987年毕业于山东矿业学院土木工程系矿井建设专业，现任教授、博士生导师，主要从事裂隙岩体断裂损伤、地质灾害超前预报与防治等方面的教学与研究工作。E-mail：lishucai@。通讯作者：李利平(1981–)，男，现任副教授。E-mail：yuliyangfan@