Currently, in the design and construction of large industrial enterprises, three-dimensional BIM models of buildings and structures are being introduced. This article describes the practical application of the Leica RTC360 terrestrial laser scanner at the industrial site of PJSC Uralkali, Berezniki, Perm Territory, under construction. The purpose of the survey is geodetic monitoring of construction and the implementation of as-built documentation for the sections of heating, ventilation, water supply, sewerage and heating networks of the shaft building No. 2. To bind point clouds to the construction coordinate system and heights, linear-angular networks are created inside existing industrial enterprises using an electronic total station to determine the coordinates and heights of marks for a ground-based laser scanner. The article considers an automatic method and method for registering the best approximation for combining point clouds obtained using NLS with BIM models. As a result, the automatic method is used when there is a building coordinate system on the object under study. The method of registering the best approximation is used when there is only a conditional coordinate system, for example, for control assemblies of metal structures. It is proposed to perform automatic classification of point clouds, both inside industrial facilities and outside. The classification process is based on a machine learning algorithm that relies on calculations using a video card. Ground-based laser scanning was used directly at a real mining enterprise under construction, which allows further geodetic monitoring, creation of as-built documentation and timely detection of deviations from the project using BIM models.

Currently, in the design of large industrial enterprises, modern building information models (BIM) are being introduced and further used at the construction site. The construction industry is transitioning to digitalization of information modeling processes using spatial data and electronic document management. Therefore, it is proposed to use unmanned aerial vehicles (UAVs) and terrestrial laser scanners more efficiently for geodetic monitoring of the construction of industrial facilities of mining enterprises. With the systematic monitoring of construction, a full-fledged master plan is created, which reflects all deviations from the project, including works that were not provided for in the project documentation. It is known that using UAVs to collect spatial data, it is possible to control earthworks, pile fields, foundations, temporary roads and landscaping. Structures such as metal and reinforced concrete columns, trusses, beams, technological equipment, complex above-ground pipelines and facades are advisable to be monitored using a ground-based laser scanner. All the data obtained during geodetic monitoring can be combined in a single project and jointly used for a comprehensive solution of various applied engineering problems both in the process of monitoring buildings and structures being erected, and during their operation.