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Research Object and Relevance. The main components of the strain tensor and their accuracy assessment are the research objects in this work. When conducting monitoring using geodetic methods, it is usually not enough to determine only the displacements of reference points; it is also necessary to determine the presence and magnitude of deformations. This task is directly related to the accuracy assessment of such characteristics as principal strains, dilatation, shear strains, and rotation. Research Methods. In co...

Research Object and Relevance. Inclinometer measurements occupy an important place in geotechnical monitoring of hydraulic structures. Borehole inclinometers are used on tailings dams - they allow you to determine horizontal displacements, shifts, curvature of the casing pipe throughout its entire depth. An important part of the processing of initial data is the identification of various systematic errors. The authors of the article faced the problem of interpreting the displacements at the tailings dam of The Erd...

Research Object and Relevance. Geotechnical monitoring is an integral part of the safe operation of a facility. When the deformation network is a network of high-rise benchmarks, in addition to vertical displacements, slopes and deflections of intervals are calculated. Often, geotechnical researchers and engineers pay more attention to the quantitative values of various deformation characteristics, comparing calculated values with geomechanical models. In our article, we want to pay attention to the assessment of ...

Object. Measurements via borehole inclinometers have been actively used in geotechnical monitoring for more than forty years. Due to the high sensitivity of MEMS sensors to external factors, the passport accuracy characteristics of such equipment are significantly underestimated. At the same time, the analysis and interpretation of data obtained by inclinometers measurements are associated with an assessment of these measurements quality. Identifying the random and systematic components of the total error is the k...

Surveying stability monitoring of hydraulic structures are an integral part of their safe operation, warning of man-made, environmental emergencies. In most cases, such facilities are not typical objects, and, therefore, blind guidance of regulatory documents cannot provide an opportunity for operational stability control. The problem of designing observation stations in hydraulic structures is extremely relevant in this regard. This article summarizes the experience of conducting systematic high-precision observa...

The objective of this research is to optimize the volume of laboratory tests of physical and mechanical properties of soil. Today, the solution to geomechanical and mining technological problems has the form of functional or statistical relationships, reasoned by the physical parameters of soils (density, moisture, strength properties, acoustic indicators, etc.). The calculations use the average values or estimates of these parameters obtained from statistical processing of multiple laboratory or field test data. ...

Systematic monitoring of buildings and structures is necessary to ensure the safety and reliable functioning of infrastructure facilities. An important component for high-precision measurement control during monitoring is the verification of double measurement accuracy and the identification of systematic errors. By double measurements we mean the comparison of measurement result difference between the monitoring series, determining the displacements that occurred as systematic errors using the mathematical appara...

Object. In high-precision work including surveying observations of deformations the researcher often encounters with the problem of interpreting survey measurements. The quality of such measurements and their functions are characterized by root-mean-square deviation. In this article authors consider a method that improves the quality of equalizing angular measurements using the example of circular (360-degree) techniques. The initial data were taken from one of classic calculation work «The results processing of h...

The influence of the geometry of the spatial resection - mutual positioning in the space of the receiver and satellites, signals from which the receiver is received at the time of measurement, on the positioning accuracy is considered. The position of the satellite is described through the geometric range, the direction angle and the elevation angle in a rectangular spatial coordinate system. The geometric factor is expressed through the diagonal elements of the inverse weight matrix of the position error determin...