Shield tunneling method apparent quality method and system

Abstract

The present invention discloses a shield tunneling method apparent quality method. The method comprises the following steps: (1) obtaining point cloud data in real time through laser scanning of a tunnel segment entity; (2) generating a tunnel entity point cloud data model according to the point cloud data; (3) comparing the tunnel center of a tunnel entity point cloud model with a tunnel design BIM model center to obtain a tunnel center line deviation value; (4) obtaining a slab staggering value according to the tunnel entity point cloud model; (5) calculating and obtaining an ovality according to the tunnel entity point cloud model; (6) performing disease analysis of the tunnel entity point cloud model, wherein the disease analysis comprises disease area identification, disease category determination and disease numerical calculation; and (7) determining a detection numerical value and evaluating the tunnel apparent quality state according to a preset apparent quality evaluation standard. The shield tunneling method apparent quality method and system can rapidly obtain the three-dimensional coordinate data of the surface of a measured object in large-area and high-resolution and rapidly and largely collect space spot location information with high efficiency and high precision.

Description

technical field [0001] The invention belongs to the technical field of tunnel detection, and in particular relates to a shield tunnel appearance quality detection method and system based on laser scanning technology and BIM technology, and is mainly oriented to the detection and diagnosis of shield tunnel structures. Background technique [0002] In the construction process of shield tunneling, because the quality of segment assembly is often difficult to be completely controlled, phenomena such as staggered platform and seam, segment damage, and ellipticity exceeding the specified value often occur, as well as cracks, leakage and The apparent quality of these tunnels seriously threatens the safety of the tunnel structure. The traditional quality control of segment assembly is carried out by engineering inspectors on a regular basis to check one by one inside the tunnel. When a segment with a large misalignment is found during the inspection, the ruler is used to determine w...

AI Technical Summary

Problems solved by technology

During the operation period, due to the long total mileage of the tunnel and scattered disease occurrence points, manual inspection can no longer meet the needs of daily maintenance and repair of the tunnel

[0003]The traditional detection method is greatly affected by the detection subject, detection frequency and detection efficiency, and cannot realize the automatic detection of segment apparent quality

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