| 邻近水库水位下降产生的卸载效应对地铁隧道变形的影响研究 |
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| 引用本文： | 陈贺,阳生权.邻近水库水位下降产生的卸载效应对地铁隧道变形的影响研究[J].湖南工程学院学报(自然科学版),2014(2):73-76. |
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| 作者姓名： | 陈贺 阳生权 |
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| 作者单位： | [1]湖南科技大学土木工程学院,湘潭411201 [2]土木工程施工过程与质量安全控制实验室,湘潭411201 |
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| 摘 要： | 紧邻地铁车站的地表水体,在水位变化时会对车站隧道的变形及稳定性产生一定程度的影响.本文依托重庆轨道交通六号线曹家湾车站工程,通过现场观测试验,分析了场地内双碑水库水位下降时产生的卸载效应对隧道变形的影响,并总结了其变形规律,认为水位下降大小及水库与车站的相对位置是影响隧道变形的主要因素.此外,利用有限差分FLAC3D数值分析软件对水位下降产生的卸载效应进行了模拟,得到的结果与工程实际监测结果基本相符.
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| 关 键 词： | 地铁隧道 水库水位下降 卸载效应 隧道变形 现场观测试验 数值分析 |
Research on Effect of Unloading Effect on Deformation of Subway Tunnel Due to Drawdown of Adjacent Reservoir Water Level |
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| CHEN He,YANG Sheng-quan.Research on Effect of Unloading Effect on Deformation of Subway Tunnel Due to Drawdown of Adjacent Reservoir Water Level[J].Journal of Hunan Institute of Engineering(Natural Science Edition),2014(2):73-76. |
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| Authors: | CHEN He YANG Sheng-quan |
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| Institution: | 1. School of Civil Engineering, H unan University of Science ＆ Technology, Xiangtan 411201, China; 2. College Key Laboratory of Construction Process, Quality and Safety of Civil Engineering, Xiangtan 411201, China) |
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| Abstract: | The water level fluctuations of surface water body can have effects on the deformation and sta- bility of adjacent subway tunnel to a certain extent. With the practical example of Caojiawan Station in Chongqing Metro Line 6, the paper analyzes the influences of unloading effect from water level decline to deformation of subway tunnel, and summarizes the tunnel deformation law by the observational experi- ment. Furthermore, the decline value of water level and the relative position of reservoir and tunnel are the major factors that affect the deformation of subway tunnel. In addition, FLAC3D simulation analysis is applied to simulate the loading effect from water level decline, and the result of numerical simulation is basically accord with monitoring data. |
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| Keywords: | subway tunnel drawdown of reservoir water level unloading effect deformation of tunnel in-situ observation numerical analysis |
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