Open AccessAPPLICATION OF HIGH-PRECISION TRIGONOMETRIC LEVELING IN DEFORMATION MONITORING OF HYDRAULIC STRUCTURES
Author(s) -
Anton Nikonov,
В. А. Скрипников,
М. А. Скрипникова
Publication year - 2021
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2021-1-85-92
Subject(s) - geodetic datum , total station , refraction , trigonometry , deformation (meteorology) , levelling , deformation monitoring , range (aeronautics) , geodesy , geology , remote sensing , mathematics , engineering , optics , geometry , physics , oceanography , aerospace engineering
The article proposes to use high-precision trigonometric leveling when determining the deformations of hydraulic structures. The required accuracy can be ensured by measuring the excess with automated high-precision total station and observing a number of conditions. Recommendations are given for the modernization of one of the sections at the Novosibirsk hydroelectric power station. The results of field studies on the determination of the refraction coefficient by the geodetic method are presented. During a summer day (from 10 to 18 hours), a change in the coefficient of refraction was recorded in the range from -0.14 to +0.81, which significantly differs from the standard value of +0.13. Therefore, when measuring the vertical displacements of deformation marks located on the alignment, it is proposed to periodically determine the coefficient of refraction and, if necessary, introduce appropriate corrections into the measurement results.