In the construction sector, the reform of design and survey work allows us to take a fresh look at the state of engineering and geological research. The use of software systems provides an opportunity to automate this process during construction, reconstruction of buildings and structures in order to avoid the formation of landslide processes and reduce man-made risks. Limit equilibrium methods are used to determine the stability of a slope or an underground structure. Therefore, the purpose of the study in the article was to conduct engineering and geological surveys using various methods and then calculate the stability of landslide slopes. The sliding surfaces with the lowest coefficients of stability margin were selected by the optimization method for the calculated slopes.

Keywords: integration, reformation, method, construction, soil, landslide slope, man-made risk, surveys, automation

Products made of gypsum binders have heat and sound insulation properties, fire resistance, high technical, economic and environmental indicators, which are used in construction in the construction of internal walls and partitions, the total area of which, as a rule, is several times larger than the area of external walls. By reducing the density of gypsum products due to the introduction of light aggregates, it is possible to reduce the mass of walls, lighten the building, reduce the load on foundations and reduce the cost of construction, while improving thermal protection. However, traditional lightweight fillers increase the water demand of the mixture and reduce the strength of the material. Therefore, in the article, the purpose of the study was to determine the optimal composition of gypsum compositions with various types of filler to obtain the best set of properties of the obtained samples.

Keywords: gypsum concrete, perlite, vermiculite, experiment, filler, density

An overview of the rationale for the use of lightweight multi-hollow floor slabs is given. Technological and design features of multi-hollow floor slabs are considered. The possibilities of rational use and labor intensity of lightweight hollow floor slabs are presented. On the basis of existing technologies, calculation methods for lightweight hollow slabs and current norms, the calculation of monolithic slabs in the Lira software package was carried out. The work of floor slabs with spans equal in two directions is considered. It was found that regardless of the span of the floor slab, the effect of reducing its own weight exceeds the effect of reducing the cruelty of the section. The total deflection from the floor slab's own weight and payload on it for hollow slabs is lower than for solid slabs of the same span.The conducted numerical experiment allows us to establish the limits of the effectiveness of the use of lightweight multi-hollow monolithic floor slabs, upon reaching which the use turns out to be significantly more profitable than the use of traditional girderless floors.

Keywords: constructive scheme, software package, overlap, building, multi-cavity plate, calculation, labor intensity, design

The article investigates the physical and mechanical properties of fine-grained fiber-reinforced concrete with metal, polypropylene and polyamide fibers, using Portland cement, hyperplasticizer. Comparison of strength characteristics of fiber-reinforced concrete made using metal fiber, polypropylene and polyamide fibers is carried out. A technical and economic comparison of the efficiency of using fibers of various origins has been made. According to the cost calculations, the use of polyamide fibers is cost-effective, since the cost of materials is lower than the cost of fiber-reinforced concrete materials based on polypropylene fibers of this composition.

Keywords: fiber concrete, hyperplasticizer, fiber, microsilica, tensile strength, nature of destruction, mechanical property, polypropylene fiber, polyamide fiber, cement, reinforcement, adhesion, monolithic structure, cost

On the basis of the model of non-piston displacement of oil with water, a mathematical model, algorithm and software product are presented, which allows to conduct numerical studies of the indicators of the development of a layered layer, taking into account the method of flooding the field: reservoir water temperature or hot water.

Keywords: continuity equation, heat transfer equation, non-piston displacement of oil by water, finite-difference scheme

This article discusses the engineering-geological investigations for the development of working documentation for the construction trestle of technological pipelines of CCGT-410 at Nevinnomyssk Gres. Offers recommendations to optimize development of design documentation for the construction trestle of technological pipelines.

Keywords: Geological Engineering, building, overpass, geology, soil, structure, project relief, operation, working documentation

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