The development of the mining industry calls for an increase in the technical and economic indicators of tunneling operations. At the same time, with increasing speed of construction, intensity and productivity of drifters, the complication of mining and geological conditions exacerbates the problems associated with ensuring the integrated safety of workers in underground conditions. With an increase in the depth of the trunks, the absolute average values ​​of the duration of individual stages of work increase. The average speed of the construction of the trunks varies slightly and is lower than the normative ones. One of the main reasons for this situation is a large loss of time during the construction period and a low level of work safety. The performed studies show that it is necessary, both to increase the technical equipment of construction, and to improve the organization of work and socio-economic working conditions. The best examples from practice show that this allows you to increase labor productivity by 3 times while ensuring high work safety. At the same time, this approach is not yet widely used in modern Russian practice, where the socio-economic situation of the mining industry remains rather severe, and the level of industrial injuries is the highest in comparison with the rest of the economy. The numerical spatial model is a fragment of a rock mass with a size of 80 to 90 meters, in which the tunnel is connected by a span of 6.0 m, adjacent to the vertical trunk. The mating and trunk in the area under consideration are fixed with reinforced concrete lining 500 mm thick. A universal spatial isoparametric eight-node finite element is used to break up the model. The dimensions of the finite elements on the outer regions of the model were 2.5 - 5.0 m, on the inner - 0.25 - 0.5 m. Thus, the principle of combining dense and rarefied grids was used to reduce the amount of information describing the numerical model. The problem was solved in an elastoplastic formulation by a stepwise iteration method. As a result of calculations, all the components of the volumetric stress tensor in the finite elements of the lining and the rock mass, movement and deformation in the nodes of the finite elements were determined. With the help of the developed numerical models, a series of calculations was performed, an array of data was obtained on the stress-strain state of the lining in the zone of coupling effect, quantitative and qualitative analysis was performed. It is established that in characteristic zones of the influence of conjugations, a significant increase in the intensity of equivalent stresses is observed, which leads to a reduction in the load-bearing capacity of the lining by 2 times or more in comparison with extended sections of underground structures. To increase the efficiency of maintaining interfaces during tunnel operation, it is necessary to justify the control actions taking into account the dynamics of changes in the stress-strain state of the lining in space and time.

Keywords: tunnel, shaft, linking, stress-strain state of the rock mass, the concrete lining

In accordance with the requirements of the legislation of the Russian Federation on the basis of a complex of pros-pecting works, it is necessary to establish the rate of removal of the soil layer. The thickness of the removal of the soil layer is established on the basis of a complex of laboratory studies of soil samples taken from established soil hori-zons. The thickness of the soil horizons is currently determined using stock data based on the characteristic type of soil. However, the thickness of soil horizons in a number of cases on sections characterized by identical soil characteris-tics differ. Thus, in each specific case it is necessary to link the soil sections and boundaries of the selected soil con-tours instrumentally through ecological excavations. High saturation with soil workings can lead to a significant distur-bance of the soil cover of the surveyed area. To solve the above problem, it is proposed to use a unit for studying the power of multicomponent dynamical systems for vertical drilling of soil wells

Keywords: soil horizon, fertile layer, survey, withdrawal power, prospecting, well, drilling, capital construction, photographic fixation, deposition

The paper presents the development of a system for detecting the status of control and protection system drives (CPS) of a water-water power reactor by vibration signals using the frequency components method. Results of experimental researches at the "Izhorskiy Plant" PO are given. Spectral analysis is used to isolate the frequency ranges of the CPS diagnostic signal spectra, and to develop diagnostic standards. The work describes formation of reference diagnostic vectors (a set of diagnostic features in the form of a binary code) and their comparison with the current state. The developed standards formed the basis for the system of automatic recognition of the object state. The introduction of such a system will simplify the task of collecting, analyzing, comparing drives data during operation at nuclear power plants, as well as improving methods of testing and diagnosing CPS drives, which should positively affect the reliability and resource of equipment.

Keywords: CPS drive, technical diagnostics, spectral analysis, diagnostic vector, state recognition

The paper proposes a method for determining the leakage in the gate of an electric drive armature by sound and ultrasonic signals using the Shannon and approximation entropy indices. The results of equipment diagnostics in laboratory and industrial conditions are presented. The results indicate the possibility of using entropy indicators as sensitive diagnostic features.

Keywords: electric drive armature, ultrasonic diagnostics, Shannon entropy, approximation entropy

This paper provides an overview of the types of existing natural gas consumption meters. A comparison is made of the instruments of various manufacturers present on the market. The main characteristics of the counters are named, the definitions for each characteristic are given. The problem of temperature compensation of flow rate depending on the temperature of the working medium is considered. The error in measuring gas at temperature differences leads to difficulties in predicting the consumption of energy resources. Two existing approaches to the solution of the problem are given. The ways of solution for the task of including metering devices in unified automated energy accounting systems are also shown.

Keywords: flowmeters of natural gas, diaphragm counters, automated metering systems, energy resources, thermal correction

In the article the technique of data processing of field and laboratory research of water-dissolved gases, osnovna on the use of the developed software and databases

Keywords: Water-soluble gases, software package, database, data processing

Тhe article deals with the malfunctions of the vehicle's brake system, resulting in uneven wear of the brake pads. Illustrations of damaged pads are given. Recommendations for troubleshooting are given.

Keywords: car, brake system, brake shoe, wear pads, malfunction

The article is devoted to the development of a multicriteria transport problem solution. As criteria, the minimal cost of transportation, the minimal time of transportation, the minimal overhead charges and the maximal volume of transportations were taken. Classical methods for solving multicriteria optimization problems are modified and adapted to the transport problem specification. In Visual Studio C # programming language, is used as a software package to solve the multicriteria transport task problem by one of the methods of linear convolution, or the main criterion, or compromise method or the method of guaranteed result and to compare the results obtained. The first paragraph is devoted to the formulation and mathematical model design of four-criterial transport problem. The second paragraph contains an example the application of guaranteed result method to solve transport problem. The next paragraph describes the program realization of transport problem with four criteria.

Keywords: four-criterial transport problem, method of potentials, initial symplex table, main criterium method, compromise method, lambda-problem, liniar convolutuin method, transporat carriages, program realization, multiplicative convolution, guaranteed result me

The article illustrates the problem of measuring the speed glider component targets in the presence of a turboprop effect of the reflected signal in a pulse-Doppler radar, proposed a model turboprop signal component and an algorithm for its suppression

Keywords: spectrum; radar; echo signal; turboprop effect; gliding component, micro-Doppler, radar

The main maintenance of a diversification of production as activity of subjects of managing is considered. being shown in purchase of the operating enterprises, the organizations of the new enterprises, redistribution of investments in interests of the organization and development of new production on available floor spaces. The most important organizational economic targets of a diversification of management are presented by innovative activity of the industrial enterprise.

Keywords: algorithmic design, generative design, digital method, parametrism, object genome, script, Grasshopper plugin, self-regulation, modeling tools, simulation, optimization process

In the work described and the criteria of layout of self-propelled forestry tractors, processing equipment(crane, chipper), mounting structure, capacity of mobile chippers. The system analysis on the choice of optimum arrangement is carried out.

Keywords: logging self-propelled tractor, hydraulic manipulator, chopping machine, system analysis

Dynamic memory devices are designed to generate a sequence of copies of a pulsed radio signal with a specified delay time. Such controllable devices can be considered as delay lines with a variable delay time and can be used in various signal processing systems. The results of statistical modeling of the influence of the parameters of couplers on the identity of the formed copies in a dynamic memory device with a binary fiber-optic structure are presented. The possibility of increasing the copy identity is proved by sorting the existing couplers when installing them into a binary fiber-optic structure. With a cascade number of more than 7, an increase in the identity of the copies is possible even when compared with the use of ideal couplers.

Keywords: dynamic memory device, binary structure, copy identity, coupler, tap coefficient

This article provides information about the state of the housing stock of the Russian Federation, provides statistical evidence, and the reasons for the current state of residential buildings and structures. The influence of modernization on the preservation and restoration of the housing stock of the Russian Federation is indicated, its expediency and main types of works are given, the results of modernization are presented

Keywords: housing stock, housing problems, modernization, operational parameter, the desirability of modernization, depreciation of the building, main types of works, replacement of equipment, add-in floors, changing the geometry of the premises

In the article results of the analysis of analytical dependences and results of the computing experiment executed in Lyr-CAD environment are considered. The purpose of the performed work is a quantitative assessment of the reduction in strength of beams of monolithic reinforced concrete overlappings caused by errors made during the performance of reinforcement work. In particular, an increase in the thickness of the protective layer of concrete and the consequent reduction in the working height of the section are considered. The data analyzed for both reference and span cross sections are analyzed. In total, four series of samples were selected, differing in the class of concrete (B15, B20, B25 and B30). Each series consisted of 9 samples having different working height sections in the reference and span sections. The working height of the section varied from 5 to 22%. The finite element model was created in the LIRA-CAD environment. In the course of the analysis, the effect of changing the working height of the section on the area of ​​the reference and passing reinforcement, selected for strength, was investigated.

Keywords: It is established that the degree of influence of the deviations of the position of the reinforcement from the design in the reference sections and in the span is different. The greatest danger is represented by the support sections, that is, the overlapp

In article the developed circuitry decision with high response characteristics of the multistage programmable attenuator very high frequency of power on the basis of low-sized microstrip elements and heterojunction GaAs HEMT of structures is considered. The main aspects of design and functioning of the diagram are described. Results of simulation mathematical modeling are given in a software package of Microwave Office.

Keywords: MMIC, low-sized microstrip structures, programmable attenuator, heterojunction, HEMT, GaAs, Microwave Office.