[1]HU Lei,QIU Yunjun,WANG Xizhao,et al.Point cloud big data analysis and deep model research for line and slope fine-tuning[J].CAAI Transactions on Intelligent Systems,2020,15(4):795-803.[doi:10.11992/tis.201911027]
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
15
Number of periods:
2020 4
Page number:
795-803
Column:
吴文俊人工智能科学技术奖论坛
Public date:
2020-07-05
- Title:
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Point cloud big data analysis and deep model research for line and slope fine-tuning
- Author(s):
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HU Lei1; QIU Yunjun2; WANG Xizhao1; ZHANG Zhiyi3
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1. Department of Computer Science & Software Engineering, Shenzhen University, Shenzhen 518061, China;
2. China Construction South Investment Co., Ltd., Shenzhen 518022, China;
3. China Construction Railway Electrification Engineering Co., Ltd., Beijing 100089, China
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- Keywords:
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actual tunnel; theoretical tunnel; deviation; point cloud big data; invasion limit value; design line; deep learning; gradient descent; extreme value
- CLC:
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TP391
- DOI:
-
10.11992/tis.201911027
- Abstract:
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The deviation information between the completed tunnel and the originally designed tunnel is very important for the safety adjustment of metro lines. However, there is no clear mathematical formula that can be used to accurately describe and measure the deviation. At present, the mainstream approach is to measure the invasion value of each section with the same interval manually and then sum up these values to get the deviation. This method has the disadvantages of large error, time-consuming and high cost. To solve these problems, a novel deviation representation method based on deep neural network is proposed, which can learn the internal relationship between the parameters of the designed tunnel and the invasion values based on the point cloud data, and then predict the parameters that can make the sum of the invasion values minimum. These parameters can be used to assist the safety adjustment of metro lines. The experimental results on a data set collected from a real subway project show that the proposed method can quickly obtain the appropriate adjustment scheme of the lines and slopes with only a small amount of computer memory resources.