The relevance of this study lies in the fact that the mutual influence of existing transport facilities and the newly erected underground part will be taken into account and the ways to minimize the geomechanical impact on each other will be determined. The subject of the study is the stress-strain state of the system ""structure - massif - structure"". The purpose of the study is to minimize the mutual influence of the subway, the railroad and the underground part of the designed building.

Keywords: geotechnical screen, mathematical modeling, FEM, underground structure, mutual influence, stress-strain state, subway station, minimization of influence

This article examines the range of issues related to the construction of the subway in Ho Chi Minh City, Vietnam, using the example of the newly built Thu Thuem area as an example. The problem of construction lies in the difficult mining and geological conditions of Ho Chi Minh City. The geological structure has terrigenous-mineralogical associations, which makes the underground tunneling of the subway lines very difficult. Therefore it was decided to build the subway on trestles, but the calculation of foundations on terrigenous-mineralogical associations requires a detailed geological study.

Keywords: subway, terrigenous-mineralogical associations, overpasses, geological structure, Ho Chi Minh City, geological structure, Thu Tiem district

With the safety position and the environmental and economic feasibility of perspectivity renunciation of the use of imported liquefied chlorine (substance of 2 hazard class) and replacing it with an electrolytic solution of sodium hypochlorite (4 hazard class), produced by on-site consumption. Hydrogen, which is a waste product , is thus partially (15-20%) to reduce the need Rostov TEP-2 in this matter and to provide a corresponding reduction in energy and economic costs.

Keywords: liquefied chlorine, sodium hypochlorite, hydrogen, emergency, chlorination plant, hydrogen generation, energy efficiency, resource conservation, safety

The calculation of technological and economic losses caused by emission of electrolysis hydrogen in the atmosphere is made. The flow of oxygen and air during the combustion gases and the amount of simple combustion is calculated. The ways of economically viable utilization of associated hydrogen would increase the level of environmental safety of the process are revealed. We consider the use of hydrogen produced during electrolysis of sodium hypochlorite solution to produce hot water for the needs of the enterprise. Proposes the use of snow in the territory of the water supply enterprise as a backup element for the implementation of resource-saving technologies for potable water.

Keywords: electrolysis, hydrogen, sodium hypochlorite, natural gas, economic loss, air, heat of combustion, hot water, energy potential, electrolysis station, water treatment, equipment for melting snow, resource-saving technology

Production of sodium hypochlorite as disinfectant agents to clean water, suitable to be deployed on the basis of a thermal power plant or nuclear power plant. Power plant-manufacturer GHN can profit from its implementation. The proposed scheme will facilitate rapid and efficient transfer of rural water supply in an environmentally and safer water treatment technology.

Keywords: sodium hypochlorite, water, disinfection, disinfectant, concentration, ecology

At present an important role in solving energy conservation problem is assigned to thermal pumping plants (TPP). Using processes of evaporation and condensation of easily boiling liquid circulating in the system they extract low potential heat from environmental objects and provide heat supply for buildings, constructions, greenhousee and so on. Artificial sources of low potential heat for TPP of different capacity can be, for instance, ventilation air and exhaust gases, circulating and waste water,ground. Energy efficient reasonability of TPP use in the system of water disposal for the town of Novocherkassk in Rostov region is considered. Calculations indicate that there is a technical potential to replace a boiler house operating on expensive gas fuel and emissing into the atmospere more than 850 t of carbon dioxide - greenhouse gas - with ecologically clean TPP, one of which uses heat of waste water and the other - heat of ground.

Keywords: thermal pumping plant, renewable sources, energy conservation, evaporation, condensation, waste water, ground