The article proposes a special device to transport earth when building an underground part by the «top-down» and «top and down» technique. The developed device is fully electrically powered. The proposed technology enables to completely exclude nonproductive movements of excavating and transportation devices to relocate the earth from the working site to the dumping site onto trucks above ground. The device is adapted to work as part of the production line when realizing the “top-down” and «top and down» technology. To exclude load lifting mechanisms for lifting and dumping of the earth onto the trucks above ground, it is proposed to use two lifting rails with hoisting equipment fixed on a metal frame.

Keywords: “top and down” technology, earth works, excavation works, subsurface part of a building, earth movement, tier of a subsurface part of a building

The safety of technological processes in the performance of loading and unloading, construction and installation works is becoming increasingly important. The desire of manufacturers to increase the power characteristics of load-lifting mechanisms and their number makes their mark on the unsatisfactory OSH management system in general, plus the discipline and unsatisfactory technical condition of the equipment leave much to be desired. The situation is not better with observance of elementary safety standards, which, as a rule, are skeptical not only for the working class, but also for engineers and managers who do not conduct personnel training, are not interested in the application of personal protective equipment (in rare cases), attestation of workplaces, everything is done formally, as a result of which the picture is not formed in the best way.

Keywords: safety engineering, construction, cranes, industrial injuries, construction and installation works, industrial accidents

article is devoted to a question of calculation of non-stationary temperatures in cracks of residential buildings with application of numerical methods. Special attention is paid to the causes of cracks in the houses which are in the earned additionally territories of the miner's cities. By means of the program and element system of numerical modeling ANSYS the picture of distribution of cracks on a building facade is shown. The analytical method of calculation of non-stationary air temperatures consisting in application of projective methods of Galerkin is developed for cracks. Establishment of a profile of temperature and speed of air was result of a research on the basis of what it is possible to draw a conclusion that in the presence of cracks in external walls of buildings considerable indignations of the temperature field which are localized near a crack take place, and the sizes of area of distortion are defined by the sizes of the crack.

Keywords: nonstationary temperatures, numerical modeling, crack, uneven sediment, convection, thermal inertia, thermal conductivity, temperature profile, Galerkin method, dimensionless temperature