| 利用TLS技术进行地铁隧道断面提取及变形监测分析 |
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| 引用本文： | 潘东峰,杨超,吴一同,谭钿,张德林.利用TLS技术进行地铁隧道断面提取及变形监测分析[J].测绘通报,2022,0(4):130-133. |
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| 作者姓名： | 潘东峰 杨超 吴一同 谭钿 张德林 |
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| 作者单位： | 机械工业勘察设计研究院有限公司, 陕西 西安 710043 |
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| 摘 要： | 针对传统测量方法在地铁隧道断面提取及变形监测中存在的成果单一、过程复杂、效率低下等问题，本文采用地面三维激光扫描(TLS)技术，提出了一种基于最小二乘法曲面拟合的断面提取及变形监测分析方法。该方法以隧道中轴线为基础提取隧道连续断面，将截取的断面拟合成曲面，通过多次曲面比较，获取拟合曲面水平与垂直方向的变化尺寸，进而计算地铁隧道的变形量。以西安地铁某隧道上行区间为例进行试验，结果表明本文技术方法较传统监测方法能够快速实现隧道断面提取及变形监测，有效提升工作效率。
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| 关 键 词： | TLS 地铁隧道 断面提取 变形监测 |
| 收稿时间： | 2021-10-12 |
Section extraction and deformation monitoring analysis of metro tunnel using TLS technology |
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| PAN Dongfeng,YANG Chao,WU Yitong,TAN Tian,ZHANG Delin.Section extraction and deformation monitoring analysis of metro tunnel using TLS technology[J].Bulletin of Surveying and Mapping,2022,0(4):130-133. |
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| Authors: | PAN Dongfeng YANG Chao WU Yitong TAN Tian ZHANG Delin |
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| Institution: | China Jikan Research Institute of Engineering Investigations and Design Co., Ltd., Xi'an 710043, China |
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| Abstract: | In view of the shortcomings of traditional measurement methods, such as single results, complex process and low efficiency, in the extraction of metro tunnel cross-section and deformation monitoring, a surface fitting method based on the least square method is proposed for section extraction and deformation monitoring analysis using TLS technology in this paper. In this method,the continuous section of the tunnel is extracted based on the central axis of the tunnel, and the truncated section is fitted to a synthetic surface.The horizontal and vertical variation dimensions of the fitted surface are obtained through multiple surface comparisons, and then the deformation of the metro tunnel is calculated.Taking a tunnel in Xi'an metro as an example,compared with traditional monitoring methods,the proposed technique can quickly extract tunnel section and monitor deformation,effectively improving work efficiency. |
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| Keywords: | TLS metro tunnel section extraction deformation monitoring |
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