文章基本信息

标题：Metodología de diseño, observación y cálculo de redes geodésicas interiores en túneles de ferrocarril de alta velocidad
本地全文：下载
作者：J. Velasco ; T. Herrero ; I. Molina 等
期刊名称：Informes de la Construcción
印刷版ISSN：0020-0883
电子版ISSN：1988-3234
出版年度：2015
卷号：67
期号：538
页码：1-8
DOI：10.3989/ic.13.172
出版社：Consejo Superior de Investigaciones Científicas
摘要：The guiding of TBMs (Tunnel Boring Machines) along their advance must be based on points placed immediately behind them. Achieving good accuracies results would present some difficulties for normal exterior conditions, but inside a tunnel certain factors clouding the outlook arise. The most important and difficult factor to deal with, has to do with lateral refraction. Internal geodetic networks design is one of the more challenging problems from the geodetic and topographic point of view, as the bibliographical review dealing with this subject, advises to avoid this practice. This network allows only guiding the TBM, so that it is not used for further checking or quality control. As the network progresses, the reached coordinate accuracies deteriorate exponentially. This work establishes a methodology for the design of internal horizontal networks.
其他摘要：The guiding of TBMs (Tunnel Boring Machines) along their advance must be based on points placed immediately behind them. Achieving good accuracies results would present some difficulties for normal exterior conditions, but inside a tunnel certain factors clouding the outlook arise. The most important and difficult factor to deal with, has to do with lateral refraction. Internal geodetic networks design is one of the more challenging problems from the geodetic and topographic point of view, as the bibliographical review dealing with this subject, advises to avoid this practice. This network allows only guiding the TBM, so that it is not used for further checking or quality control. As the network progresses, the reached coordinate accuracies deteriorate exponentially. This work establishes a methodology for the design of internal horizontal networks.
关键词：Ferrocarriles; túneles; geodesia; redes geodésicas; simulación
其他关键词：Railways; tunnels; geodesy; geodetic networks; simulation