基于地面激光扫描数据的隧道轮廓质量指标评价

IF 0.7 Q4 MECHANICS
P. Dybeł, Katarzyna Dybeł, J. Cieślik
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引用次数: 0

摘要

摘要隧道轮廓质量指数(TCI)是Kim和Bruland为有效管理隧道轮廓质量而建立的指数。它是在使用激光轮廓仪测量单个爆破轮内两个轮廓的基础上估计的。然而,以这种方式获得的用于评估整个爆破轮的轮廓质量的测量结果的代表性是有争议的。地面激光扫描(TLS)技术与可用的数值表面建模工具相结合,能够开发被监测表面的三维模型。本文报告了基于TLS数据的TCI计算结果。所提出的TLS技术不仅基于隧道轮廓的选定横截面,而且基于隧道轮廓表面的形态描述。案例研究涉及对位于波兰纳普拉瓦的“马伊-卢博”隧道壁龛的测量。根据Kim和Bruland的指导方针确定了三发爆破的TCI值,并将其与所提出的TLS技术确定的TCI进行了比较。在此比较的基础上,可以得出结论,与激光仿形技术相比,TLS技术获得的结果更可靠,更能代表整个爆破轮的轮廓质量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Evaluation of Tunnel Contour Quality Index on the Basis of Terrestrial Laser Scanning Data
Abstract The Tunnel Contour Quality Index (TCI) is an index established by Kim and Bruland for an effective management of a tunnel contour quality. It is estimated on a basis of measurements of two contour profiles within a single blasting round, using a laser profiler. However, the representativeness of measurement results obtained that way for the assessment of a contour quality of the entire blasting round is disputable. Terrestrial laser scanning (TLS) technology, combined with available numerical surface modeling tools, enables development of three-dimensional models of a monitored surface. The article reports results of TCI calculations based on TLS data. The presented TLS technique is based not only on selected cross-sections of the tunnel contour but also on the description of the morphology of the tunnel contour surface. The case study concerns measurements of the “Mały Luboń” tunnel niche, located in Naprawa, Poland. The TCI values for three blasting rounds were determined in accordance with Kim and Bruland's guidelines and were compared to TCI values determined with the proposed TLS technique. On a basis of this comparison, it can be concluded that the results obtained with the TLS technique are more reliable and representative for description of the contour quality of the entire blasting round than results obtained with the laser profiling technique.
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来源期刊
CiteScore
1.30
自引率
16.70%
发文量
20
审稿时长
16 weeks
期刊介绍: An international journal ‘Studia Geotechnica et Mechanica’ covers new developments in the broad areas of geomechanics as well as structural mechanics. The journal welcomes contributions dealing with original theoretical, numerical as well as experimental work. The following topics are of special interest: Constitutive relations for geomaterials (soils, rocks, concrete, etc.) Modeling of mechanical behaviour of heterogeneous materials at different scales Analysis of coupled thermo-hydro-chemo-mechanical problems Modeling of instabilities and localized deformation Experimental investigations of material properties at different scales Numerical algorithms: formulation and performance Application of numerical techniques to analysis of problems involving foundations, underground structures, slopes and embankment Risk and reliability analysis Analysis of concrete and masonry structures Modeling of case histories
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