The tunnel surfaces were fitted using a greedy triangulation and B-spline interpolation to address the scattered point cloud analysis issue. Using Spline Interpolation and a Greedy Triangulation with 3D Laser Scanning to Assess and Forecast Tunnel DeformationģD laser scanning obtained distributed clouds of irregular surroundings and structures in the new Austrian tunneling method. However, 3D laser scanning faces two significant obstacles: abnormal denoising points and random distribution of point clouds.
It aids in identifying over and under excavation by comparing the tunnel's design surface to the predicted model by the point and fitted point cloud. It can also penetrate rocks and is less susceptible to environmental factors.ĭue to its strong environmental adaptability, high level of automation, fast detection speed, and good adaptability, 3D laser scanning technology has been increasingly used in tunnel construction. The biased tunnel measuring points' deformation is inaccurate, causing measurement and monitoring results to be misinterpreted.ģD laser scanning enables contactless measurements and can directly generate enormous 3D data clouds with irregular spatial distribution.The lengthy monitoring and measuring method compromises the inspectors' health and safety and slows construction.Construction blasts and pollutant reflectors invalidate monitoring and measuring results.Falling vault blocks cannot be avoided because of the limited number of measurement locations.However, this method has significant drawbacks, including: An Introduction to Industrial Laser Beam ProfilingĪ total station is often used for monitoring and measurement, with reflective indicators at the measuring stations.TecMed Sets New Standard in Blood Glucose Measurement Technologies with Optical Measurement IP.
Laser point measure software#
Ophir Laser Measurement Group Unveils New Version of StarLab Laser Measurement Software.Current Monitoring and Measurement Methods and their Limitations Therefore, monitoring and measuring the deformation and stability of the surrounding surface, rock, and supporting structure is crucial to collecting the necessary information for safe tunnel construction. Tunnels are symmetrical constructions that must withstand unpredictable loads. Significance of Monitoring and Measurement in Tunnel Construction
However, the new Austrian tunneling method necessitates efficient tunnel monitoring and measurement for estimating tunnel deformation. The new Austrian tunneling method is regarded as the most efficient technique in geologically diverse regions as it employs an analytical approach. It is regarded as one of the most challenging construction methods due to the presence of debris material, shear zones, water channels, and the unpredictable behavior of the rocks during the construction phase.Īn efficient and safe procedure is necessary for saving time while providing a safer workplace for construction. Tunneling is a dangerous but rapidly growing sector in the construction industry. Image Credit: Sasa Dzambic Photography/ New Austrian Tunneling Method Study: Research on Tunnel Construction Monitoring Method Based on 3D Laser Scanning Technology. A greedy triangulation and B-spline interpolation were used to fit the tunnel point cloud and characterize the tunnel deformation. In a study published in Minerals, a 3D laser scanning technology-based deformation measurement and monitoring method is proposed for safe and effective tunnel construction.
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