| 摘要 |
FIELD: surveying.SUBSTANCE: invention relates to engineering survey and can be used to control position of above-ground pipeline laying. Deformation marks are placed on pile of pipe support. At a distance of no more than 50 m from pipeline installed underground deep benchmarks, along pipeline to 20-40 km intervals set reference stations, determine their position in public network and converted to local coordinates, which are transmitted to server. Then in local coordinate system, carrying out a cycle of zero coordinate measuring deformation marks regarding groundwater deep frames, determine zero horizontal and vertical position of pipeline and results of all measurements build a design digital model of pipeline. During operation of pipeline with help of mobile GPS/GLONASS receivers carry out control measurements of coordinates of deformation marks that characterise current horizontal and vertical position of pipeline, transmit measurement data to a server and build a digital model of current pipeline. By comparing results with a design digital model define areas in which deviation of current position of pipeline from design exceeds allowable value.EFFECT: technical result is simplification of procedures for handling, storage and transmission, improving accuracy and speed of determining current position of pipeline.11 cl, 11 dwg |
