Abstract
Background In many areas of the oil and gas industry, for example, when main pipelines and oil storages construction, as well as oil distillation units foundations, the need to measure the distance to inaccessible remote objects made of various materials, including steel and concrete arises. The object can have a concrete foundation with a steel superstructure or have structural elements made of reinforced concrete. The installation location factor covers both the instrument features and the foundation stability, as well as the objects influence in the instrument vicinity. Distance measurement is exposed to atmospheric conditions, the temperature gradients can lead to a curvature of the optical beam trajectory during measurement. Measurements accuracy also depends on the type of object, material, angle between the object surface plane and the measurement path direction. Aims and Objectives o analysis of experimental work on the distances measurement by laser rangefinders to objects made of various materials; optimization of laser scanning of reinforced concrete units of oil and gas equipment. Results Taking into account the dependence of the measurement error on the beam incidence angle, the surface material and the material type, a mathematical linear programming task is formulated, consisting of restrictive conditions and an objective function consisting in minimizing the necessary measurements number. A specific model problem has been formulated and solved, which consists in finding the minimum possible measurements number of a remote object in the oil and gas industry, made of reinforced concrete structures.
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