The article deals with issues of creation of high precision mine surveying networks. They can be used for the building and equipment installation. Also there is a method of joint adjustment of satellite, geodetic and mine surveying measurements.. To solve this problem, we propose a mathematical apparatus for converting measurements into a local rectangular coordinate system. The joint system of linear equations of satellite and geodetic measurements is solved by the method of least squares by the method of conjugate gradients in a special software package. The complex has the ability to strictly precomputation the accuracy of mixed networks, taking into account all the geometric conditions that arise in the network. The articles shows the design technique of mine surveying base network for cable-belt conveyor, its precision estimation depending on methods and equipments for geodetic measurements.
It is established that the defining factor of accuracy of the designing parameters of S-type billet continuous casting machine (CCM) is relative difference of curvature of the adjacent arc-like sections, which form process axis of strand. An analysis of the local radius change of CCM ingot path curvature is carried out. In the process of CCM equipment alignment, it is necessary to ensure alignment of its curvature centers under condition of curvature value equality for minimization of its relative difference. Developed technology of position control and CCM equipment alignment allows meeting this requirement. The developed technology is based on the use of “Vizir 3D” a high-precision measurement system built on the base of electronic total station. Practical experience of alignment showed the efficiency of geodesic and combined method of equipment alignment on both billet and slab CCM.
The article considers the questions of studying and modeling atmospheric properties in geodetic measurements on industrial objects near high-temperature aggregates. It is shown that atmospheric properties around such aggregates have significant differences, which influence geodetic measurements. The research was carried out on the basis of an industrial experiment on measuring atmospheric temperature field around a rotation kiln. The mathematical model of the air temperature field in the space around the kiln is divided into two zones: the first one – the space where the total station and sighting marks are positioned; the second one – the space from the shell surface to the distance ≤2.5m. The first zone temperature field is built on measurements made by inhausting thermocouple and interpolation between measurement points by Viner-Kolmogorov filter; the second zone field is built on measurements made on the shell surface by a pyrometer. The research showed that in the direction perpendicular to the aggregate axis the lines of equal temperatures are close to circles. The mathematical model of atmospheric temperatures allows to perform integration of differential equations of the sighting beam between any measurement points, to estimate the values of geodetic refraction, to choose more accurate measurement technology.
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