基于相似理论的隧道模型试验设计研究  

Design Study of Tunnel Model Experiment Based on Similarity Theory

作　　者：伍达富 刘远明[2] 梅世龙 田娇[4] WU Dafu;LIU Yuanming;MEI Shilong;TIAN Jiao(Qiannan Polytechnic for Nationality,Duyun 558022,Guizhou,China;Collge of Civil Engineering,Guizhou University,Guiyang 550025,Guizhou,China;School of Architecture and Urban Planning,Guizhou University,Guiyang 550025,Guizhou,China;Guizhou Transportation Planning Survey&Design Academe Co.,Ltd.,Guiyang 550081,Guizhou,China)

机构地区：[1]黔南民族职业技术学院,贵州都匀558022 [2]贵州大学土木工程学院,贵州贵阳550025 [3]贵州大学建筑与城市规划学院,贵州贵阳550025 [4]贵州省交通规划勘察设计研究院股份有限公司,贵州贵阳550081

出　　处：《水力发电》2023年第9期112-117,共6页Water Power

基　　金：贵州省自然科学基金资助项目(黔科合基础ZK[2022]一般082,黔科合重大专项字[2018]3011-007);贵阳城市轨道交通科研资助项目(GD3-FW-YJ-05-2020-13-ZB)。

摘　　要：隧道相似模型试验是研究隧道工程施工中岩体和支护力学特性的一个重要手段,通过相似模型试验能够快速且经济地反映出实际隧道工程施工的基本力学规律。以相似理论为研究依据,结合桐梓隧道施工过程,考虑了试验台架尺寸、岩体相似材料、支护系统以及量测系统这几个因素进行模型试验设计。采用模型试验装置成功地完成了三台阶法、CD法、双侧壁导坑法开挖隧道的模型试验,试验结果基本符合实际情况。试验结果可知,采用双侧壁导坑法开挖隧道,有利于围岩的稳定;采用三台阶法和CD法施工,可以提高施工效率。Tunnel similar model test is an important means to study the mechanical characteristics of rock mass and supporting in tunnel project construction,which can reflect the basic mechanical law of actual tunnel project construction quickly and economically.Based on the similarity theory and the construction process of Tongzi Tunnel,the size of test bench,similar rock material,supporting system and measuring system are considered for the design of model test.The model tests of three-step excavation,CD excavation and two-side wall guide pit have been successfully completed,and the test results are basically in line with the actual situation.The test results show that the two-side wall guide pit method is beneficial to the stability of surrounding rock,and the construction efficiency can be improved by using three-step excavation or CD excavation.

关 键 词：隧道开挖 相似理论 模型试验 试验设计 三台阶法 CD法 双侧壁导坑法 围岩稳定 

分 类 号：U451.5[建筑科学—桥梁与隧道工程] TV554.2[交通运输工程—道路与铁道工程]