盘道岭隧洞衬砌结构变形监测与分析  

Analysis and Monitor of Lining Structural Deformation of Pandaoling Tunnel

作　　者：谢志伟[1] 梁庆国[2,3] 雒天峰[1] 鲁得文[2,3] 孙文[2,3] 

机构地区：[1]甘肃省水利科学研究院,甘肃兰州730000 [2]兰州交通大学土木工程学院,甘肃兰州730070 [3]甘肃省道路桥梁与地下工程重点实验室,甘肃兰州730070

出　　处：《人民黄河》2013年第12期127-130,共4页Yellow River

基　　金：水利部"948"项目(201125);兰州交通大学"青蓝"人才工程基金资助项目(QL-08-19A)

摘　　要：通过隧洞衬砌表面裂缝、混凝土应变的实时监测和地下水水质分析,研究盘道岭隧洞的安全稳定状态。结果表明,隧洞衬砌表面裂缝和混凝土应变与温度具有很高的相关性,随时间变化也具有较好的规律性,说明监测期内衬砌结构的变形主要是温度效应所致,变化量相对较小;地下水呈弱碱性,依据其离子类型及含量可划分为5种类型,部分阳离子之间及其和矿化度等指标间具有较好的相关性。The safety and stability state of Pandaoling Tunnel was analyzed by using real-time monitoring of surface fissure and strain of lining con- crete and water quality analysis. The test results show that the surface fissure and strain of lining concrete have good correlations with temperature and time, which means that the lining deformation is mainly caused by temperature effect with little changes during the monitoring period. It is also indicated from water quality analysis that the ground water leaked from the tunnel is weakly alkaline and can be classified into 5 types according to its ions types and content, where some cations have good correlations with each other and also with other indices such as mineral degree. A new point of view is put forward based on the obtained results that the cracks in concrete lining of Pandaoling Tunnel might be caused due to long term accumulation of temperature effect besides other explanations.

关 键 词：衬砌 变形 裂缝计 混凝土应变 引大入秦 盘道岭隧洞 

分 类 号：TV642[水利工程—水利水电工程] U455.91[建筑科学—桥梁与隧道工程]