The Estimation of the Building’s Vertical Shifts and Construction Groundworks on the Basis of Deformation Network Element Analysis

The growth of intensity of impact on the ground service related to the development of underground and terrestrial space, as well as to the volumes of building various objects, determines the increase of requirements to the control of deformation processes, and, hence, the development of geodetic observation methods. This is especially referred to megalopolises, where the surveyors have to work in more and more constrained conditions. The authors offer the way of estimating the vertical shift, using the independent measurements and involving the whole deformation network. It is about its model type and element examinations, which are links in the leveling run or triangles in planar case. The space position of these elements during the model-based examination is invariant in regard to the reference frame (benchmark). Therefore, the independent measurements can be performed (using vacant stations) during the observation cycles and the shifted and non-shifted elements of the model (deformation network) can be estimated in regard to the previous cycle. The identifying of the deformation control benchmarks is performed in regard to the non-shifted (stable) model elements. The methodic of fulfilling this technology, its advantages over the traditional ones, as well as the observation schemes, are shown.