土压平衡顶管变形破损修复仿真研究

发布时间：2018-04-19 11:02

本文选题：土压平衡 + 顶管变形　；参考：《计算机仿真》2017年10期

【摘要】：对土压平衡顶管的变形破损进行修复,能够有效地保证土压平衡顶管工程施工质量。对顶管变形破损的修复,需要提取顶管变形破损工作面图像特征点,组建破损变换矩阵,完成对土压平衡顶管的变形破损的修复。传统方法先对破损工作面特征进行匹配,提取破损工作面三维基本特征体素,但忽略了组建破损变换矩阵,导致修复精度偏低。提出基于Retinex的土压平衡顶管变形破损工作面的三维修复方法。上述方法先用因子分解方法得到顶管变形破损射影空间下相机投影矩阵和物点坐标,依据光束法平差技术对所有参数进行求精,提取顶管变形破损工作面图像特征点,组建顶管变形破损工作面图像变换矩阵实现拼接,最后利用小波变换多分辨率融合理论进一步对顶管变形破损工作面图像融合处理,由此完成土压平衡顶管变形破损工作面三维修复。实验结果表明,所提方法具有较好的鲁棒性,且修复精度较高。
[Abstract]:Repairing the deformation and breakage of the soil pressure balanced jacking pipe can effectively guarantee the construction quality of the soil pressure balanced jacking project.To repair the pipe jacking deformation and breakage, it is necessary to extract the image characteristic points of the pipe jacking face, construct the damage transformation matrix, and complete the repair of the soil pressure balanced jacking pipe deformation and breakage.The traditional method firstly matches the characteristics of damaged working face and extracts the basic feature voxels of damaged working face, but neglects to set up the damage transformation matrix, which leads to the low repair accuracy.This paper presents a three-dimensional repairing method of soil pressure balanced pipe jacking face based on Retinex.First, the camera projection matrix and object point coordinates in the projective space of pipe jacking deformation and damage are obtained by factor decomposition method. All parameters are refined according to the beam method adjustment technique, and the feature points of the image of the broken pipe jacking face are extracted.Finally, the multi-resolution fusion theory of wavelet transform is used to deal with the image fusion of the broken face of pipe jacking deformation.Thus, the three-dimensional repair of soil pressure balanced pipe jacking face is completed.The experimental results show that the proposed method has good robustness and high repair accuracy.
【作者单位】：内蒙古科技大学土木工程学院;河北大学土木工程学院;
【基金】：基金项目:内蒙古自治区高等学校科学技术研究(NJZY14167)
【分类号】：TP391.41;TU990.3

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