Shield tunnels are increasingly monitored using 3D laser scanning technology to generate high-resolution point cloud data. which serve as a critical foundation for precise deformation analysis. This study introduces an advanced methodology for analyzing tunnel cross-section displacements. leveraging point cloud data captured by the Self-Mobile Intelligent Laser Scanning System (SILSS). https://www.fitnessgravesyardes.shop/product-category/rod-seat-adjustment/