| 摘要 |
The invention relates to area of geodesy, in particular to methods for measurement of linear-angular deflections of engineering constructions, with precision industrial constructions among those. The method for control of spatial position of elements of roofing of engineering construction is based on photoelectric method of connection between deformation marks of engineering construction and support marks (references) by means of twin photoelectric chains (PFEL). In the construction one lays spatial network of twin photoelectric chains, horizontal and vertical, those transfer coordinates of geodesic marks (references) of basement to deformation marks of roofing by vertical PFEL, with connection of horizontal and vertical PFEL by means of three-channel optical-electronic devices with light sources with direction of axles of those by three directions of axles of two neighboring horizontal PFEL and vertical PFEL in tops of spatial figure with formed network of PFEL. Geodesic signs of basement are tied by means of separate horizontal PFEL to stable support geodesic marks (references) on locality out of zone of effect of engineering construction on position of reference marks. By measured deflections of deformation marks one performs monitoring, determines spatial state of roof of the construction in each PFEL and dynamics of change of position of marks, with comparison to permitted values of deformation, with transfer of that information through electric switch blocks to processing of data by communication channel to central point for decision making. All the measurements are carried out in conventional coordinate system one of axles of which is direction of sight beams, with following bringing results to one coordinate system with account of structural spatial respective orientation of sight beams. |
