scholarly journals GEOECOLOGICAL PROBLEMS OF ENGINEERING PROTECTION FACILITIES OF THE IMERETI LOWLAND (SOCHI)

2021 ◽  
Author(s):  
А. Bakalov
Keyword(s):  
Geological Processes ◽  
Geological Conditions ◽  
Engineering Protection

Difficult engineering and geological conditions of the Imeretinskaya lowland: the presence of specific soils with a thickness of more than 30 meters, several aquifers, including pressure, the development of dangerous geological processes (flooding, abrasion, suffusion, etc.) and, finally, increased seismicity was put before prospectors, designers and builders a very difficult task of erecting a whole series of unique Olympic facilities on this territory.

Engineering-Geological Studies Of The Territory, Soils Of Foundation And Foundations Of The Architectural Monument Of The "Melnikov’s House" In Moscow

2019 ◽  
pp. 41-51
Keyword(s):  
Working Condition ◽  
Overlying Water ◽  
North East ◽  
The North ◽  
Geological Processes ◽  
Architectural Monument ◽  
Geological Conditions ◽  
Zone Of Influence ◽  
Complex Engineering ◽  
Building Engineering

On the basis of engineering and design surveys of the building, engineering-geological and geophysical studies of the soils of the territory conducted by the article authors, as well as with due regard for the results of studies conducted on this territory by other authors, the features of the foundations, soils of their foundation and engineering-geological conditions of the territory of the Melnikov House are established. It is shown that the Melnikov house is located under complex engineering-geological conditions on the territory of high geological risk, in the zone of influence of tectonic disturbance. To the North of the area there is a zone of intersection of the observed disturbance with a larger disturbance that can have an impact on geological processes. To the North-East of the site of the Melnikov House, a sharp immersion of the roof of carbon deposits was revealed. It promotes groundwater seepage into limestone of the carbonate strata from overlying water-bearing sands and activation of processes of suffusion removal and sinkhole phenomena of the soil. The surveyed area is assessed as potentially karst-hazardous and adjacent to it from the North-East territory as karst-dangerous. In this regard any construction on the adjacent territory can provoke activation of sinkhole phenomena on the surface. The foundations of the building are basically in working condition. Existing defects can be eliminated during repair. The foundation soils mainly have sufficient bearing capacity. Areas of the base with bulk soil can be reinforced. However, when developing a project for the reconstruction of the building and its territory, it should be taken into account that the design of the Melnikov House does not provide for its operation on the loads at the formation of sinkholes.

INFLUENCE OF NATURAL CONDITIONS OF THE TERRITORY ON FLOODING OF ARTIFICIAL COVERINGS OF THE AIRPORT OF CHITA

2021 ◽  
Vol 27 (1) ◽  
pp. 24-33
Author(s):  
D. Shesternev ◽  
◽  
A. Verkhoturov ◽  
Keyword(s):  
Underground Water ◽  
The South ◽  
Natural Conditions ◽  
Engineering Structures ◽  
Protective Measures ◽  
Near Surface ◽  
Geological Conditions ◽  
National Economic ◽  
Engineering Protection ◽  
Interpretation Of Satellite Images

he study of flooding of engineering structures as a dangerous engineering and geological process and the prevention of emergencies and environmentally adverse consequences is an important task of national economic importance. The purpose of this work was to study the natural conditions of the area of the Kadala airport in Chita to identify the main causes of flooding of the artificial runway (IVPP). The object of research was the near-surface part of the geological environment, the subject-the factors of formation of hydrogeological, engineering-geological and geocryological conditions. In the course of the research, the following tasks were solved: 1) identification of factors that affect flooding; 2) assessment and proposal of acceptable protective measures. The research methodology included: collection and analysis of materials from previous engineering and geological studies; interpretation of satellite images; field survey of the artificial runway and adjacent territory; analysis of hydrometeorological conditions. As a result of the research, the factors that lead to flooding of the south-eastern section of the airport, and in winter to the formation of ice and deformations on this section of the airport’s artificial surfaces are determined. The identified factors are divided into regional and local. The hydrogeological and engineering-geological conditions of the territory and their dynamics over time are considered. It is determined that the main factors of flooding are the creation of barrages in the path of the movement of underground water and the intensive freezing of the soil on the section of the artificial runway. Recommendations for the stabilization of the ground base on this site and measures for the engineering protection of the airport territory are given. The implementation of the recommendations will ensure the accident-free operation of the artificial runway and improve the environmental condition of the settlement adjacent to the airport from the south-east

scholarly journals Sequence of studying engineering and geological conditions of mineral deposits from exploration to development

2020 ◽  
Vol 7 (7) ◽  
pp. 83-91
Author(s):  
Irina V. Abaturova ◽  
◽  
Ivan A. Savintsev ◽  
Liubov A. Storozhenko ◽  
Elvina D. Nugmanova ◽  
...  
Keyword(s):  
Large Scale ◽  
Geological Environment ◽  
Geological Time ◽  
Protective Measures ◽  
Early Stages ◽  
Geological Processes ◽  
The Earth ◽  
Geological Conditions ◽  
Geological Information ◽  
Further Development

geological environment. Actively change all the components of engineering-geological conditions (EGC), formed during the long geological time: the topography, structure of rocks, hydrogeological and permafrost conditions, are formed by geological processes and, at the same time on the surface of the Earth formed a new strata of man-made structures, and often man-made deposits. The scale of technogenesis in mining today is comparable to the results of geological activity that took place over many millions of years. Therefore, even at the early stages of studying the EGC MD, it is necessary to understand the dynamics of changes in the EGC in order to provide preliminary protective measures. Purpose of work. Consideration of striking examples of the dynamics of the EGC MD (from exploration to development), in order to provide methods for managing these changes. Methodology. The article considers the stages of obtaining engineering and geological information for the period of MD operation, which will solve the problems of rational use of the subsoil and protection of the geological environment. Results. For example, the number of objects marked all the stages of learning to yoke the dynamics of their changes, which led to the formation of engineering-geological processes that adversely affect the further testing of MD. Summary. The reaction of the geological environment in the development of MD is not long in coming and is expressed in the development of large-scale engineering and geological processes, which often do not allow further development of MD and threaten people's lives. Therefore, even at the early stages of studying the EGC MD, it is necessary to understand the dynamics of changes in the EGC in order to provide preliminary protective measures.

scholarly journals Assessment of exogenous geological hazards in Moscow, Russia

2018 ◽  
Vol 55 (1) ◽  
pp. 133-140
Author(s):  
Olga Eremina ◽  
Irina Kozliakova ◽  
Nadezhda Anisimova ◽  
Irina Kozhevnikova
Keyword(s):  
Preliminary Investigation ◽  
Urban Infrastructure ◽  
Qualitative Assessment ◽  
Economic Losses ◽  
Small Scale ◽  
Integral Parameter ◽  
Geological Processes ◽  
Geological Conditions ◽  
Urban Engineering ◽  
The Impact

Exogenous geological processes are exerting a significant impact on urban geo environment in Moscow endangering both surface and subsurface constructions. For surface construction, the principle geohazards in Moscow are karst-suffosion sinkholes, land subsidence, landslides, and waterlogging. The subsurface construction is endangered by karstification and fracturing of limestone, decompaction and swelling of clay, quicksand phenomena, and groundwater breakthrough to tunnels. Different methods are applied to study geohazards depending on the purpose and the scale of study. At the preliminary investigation stage, small-scale mapping and zoning of city surface or subsurface appears to be the most appropriate for the qualitative assessment of the risk of economic losses caused by exogenous geohazards. Assessment of the geological risk in Moscow was carried out separately for already existing urban infrastructure and for future planned construction. For existing surface urban infrastructure, geological risk is considered to be an integral parameter of probable damage caused by geohazards and the anthropogenic load on the specific territories. The main aim of risk mapping in this case is outlining the territories, for which restrictions and prohibitions should be imposed for further urban engineering development. For future subsurface urban construction, the risk-analysis consists in assessing the impact of geohazards on the engineering structure by comparing the future expenditures for the construction and operation under different engineering geological conditions. The risk maps in this case will help planners to compare and make alternative project decisions in order to minimize the cost in future economic expenditures. Both approaches are successfully approved in this investigation in Moscow.

Theme lecture: Tropical processes causing rapid geological change

1991 ◽  
Vol 7 (1) ◽  
pp. 459-471 ◽  
Author(s):  
G. E. Blight
Keyword(s):  
Tropical Soils ◽  
Geological Processes ◽  
Geological Conditions ◽  
Significant Change ◽  
The Tropics ◽  
Temperate Climates

AbstractGeological conditions and processes in the tropics may differ considerably from those in temperate climates. After briefly considering the nature of tropical soils, the paper describes some of the geological processes, occurring in the tropics, that may result in rapid geological change. These processes may act sufficiently quickly to produce significant change in a lifetime or at the very least, in a few centuries.

scholarly journals “Green” operation of a building - an object of cultural heritage

2021 ◽  
Vol 244 ◽  
pp. 05019
Author(s):  
Olga Yanina ◽  
Alexander Yanin ◽  
Anton Chigarev ◽  
Yanina Yanina
Keyword(s):  
Slope Stability ◽  
Cultural Heritage ◽  
Retaining Wall ◽  
Soil Conditions ◽  
Building Structures ◽  
Geological Processes ◽  
Heritage Site ◽  
Modern Development ◽  
Modern Engineering ◽  
Geological Conditions

The aim of the study is to determine the further «green» operation of a building - an object of cultural heritage in technogenic conditions that formed in the 20-21 centuries, based on monitoring the actual engineering and geological conditions of the urban historical territory of Voronezh. The study of the engineering-geological conditions of the territory and the structures of the building was carried out in three stages. At the first stage, a reconnaissance survey was carried out to identify surface forms of manifestation of modern engineering and geological processes; at the second stage - examination and monitoring of soil properties of the foundations and the building structures; at the third stage - calculation of slope stability in the Midas GTS NX software package and selection of the optimal slope reinforcement with a retaining wall. Changes in the physical properties of soils and the violation of soil conditions on the slope of the historical territory of Voronezh during technogenic soaking of soils were revealed. Calculation of slope stability in the Midas GTS NX PC revealed the influence of the surrounding modern buildings on the deformation of the building structures -object of cultural heritage. The influence of technogenic changes in slope stability in the process of modern development on the urban historical territory on the «green» ecology, i.e. safe operation of the building - a cultural heritage site.

scholarly journals GEOTECHNICAL MONITORING DURING CONSTRUCTION IN DIFFICULT SOIL CONDITIONS

2021 ◽  
pp. 1-5
Author(s):  
Vladimir Viktorovich Bredikhin ◽  
Vladimir Khaustov ◽  
Dmitriy Melkumov
Keyword(s):  
Urban Areas ◽  
Soil Layer ◽  
Ground Subsidence ◽  
Soil Conditions ◽  
Real Problem ◽  
Construction Methods ◽  
Geotechnical Monitoring ◽  
Geological Processes ◽  
Geological Conditions ◽  
The Right

One of the common and at the same time   most difficult problems that developers may face is unstable soil layer at the base of a future building. This paper describes problems of construction on weak, subsidence and heaving soils in engineering and geological conditions of Kursk city. Real problem of construction property safety is shown with the example of one of the demanding geomorphological and lithological conditions of urban areas. The paper offers a description of geologic and hydrogeological features of the slope rock mass in the right bank of the Tuskar river. Groundwater level lies at 8.7 m. depth. It is possible to predict an increase in the level of groundwater in building maintenance because this area is potentially flooded. Various engineering and geological processes and such phenomena  as ground subsidence, karst, suffosia, landslides, flooding, etc., can also be found in  the studied territory. Initially an insufficient engineering-geomorphological, hydrogeological, ecological and engineering-geological study of hazardous areas in the city of Kursk have led to its problematic development, which illustrates the situation with residential real estate in the studied territory. To predict dangerous engineering-geological processes and ensure the reliability of the construction fund, specific proposals have been developed for the organization of a geotechnical monitoring system based on the optimal integration of geomorphological, geodesic, engineering-geological, hydrogeological and environmental construction methods in complex engineering-geological conditions.

scholarly journals ENGINEERING-GEOLOGICAL AND GEOECOLOGICAL PROBLEMS OF HEAT POWER COMPLEXES ON URBAN AREAS

2021 ◽  
pp. 3-23
Author(s):  
T.V. Kril ◽  
M.G. Demchyshyn
Keyword(s):  
Urban Areas ◽  
Power Plants ◽  
Thermal Stresses ◽  
Thermal Power ◽  
Chemical Pollution ◽  
Thermal Power Plants ◽  
Geological Hazards ◽  
Heat Power ◽  
Geological Processes ◽  
Geological Conditions

The impacts of thermal energy plants on the geological environment include the chemical pollution of groundwater and soils, changes in their physical and mechanical properties, and the induction of thermal, vibrational, and electromagnetic fields in the soil bases. The aim of the research is to determine geological hazards in large cities, where thermal powerplants and combined heat and power plants are located. The objects of research were soil foundations, buildings ofthermal power plants of industrial and urban agglomerations of Kyiv, Kharkiv, Dnipro and Odesa. The following hazardous objects have been identified in the thermal power plants located within the settlements: flue-gas stacks (static load, dynamic influences at significant wind loads, impact on the ecological state); cooling towers and cooling pools(leaks, additional soil moisture); engine rooms (static loading and vibration effects from equipment operation); pipelines(leaks, formation of thermal stresses in soils); ash settlers (environmental impact). The positions of heat power plant objects in relation to the functional zones of the city are analyzed. Description of soil bases is given. It is established that the bases of the thermal power plants buildings are mainly dispersed incoherent (sandy) and weakly cohesive (loess-like)soils. Changes in engineering and geological conditions during the operation of the thermal power plants, which can cause dangerous geological processes and provoke emergency situations, have been assessed. Indicators of criteria for identification of geological hazards when assessing risks during the operation of the thermal power plants are proposed on the basis of engineering-geological processes caused by technogenic factors.

scholarly journals Forecasting of mining and geological processes based on the analysis of the underground space of the Kupol deposit as a multicomponent system (Chukotka Autonomous Region, Anadyr district)

2021 ◽  
Vol 247 ◽  
pp. 20-32
Author(s):  
Regina Dashko ◽  
Ivan Romanov
Keyword(s):  
Carbon Dioxide ◽  
Multicomponent System ◽  
Underground Water ◽  
Underground Space ◽  
Microbiological Analysis ◽  
Mining Operations ◽  
Underground Waters ◽  
Geological Processes ◽  
Geological Conditions ◽  
Metal Support

The underground space of the Kupol deposit is analyzed as a multicomponent system – rocks, underground water, microbiota, gases (including the mine atmosphere) and supporting structures – metal support and shotcrete (as an additional type of barring) and also stowing materials. The complex of host rocks is highly disintegrated due to active tectonic and volcanic activity in the Cretaceous period. The thickness of sub-permafrost reaches 250-300 m. In 2014, they were found to contain cryopegs with abnormal mineralization and pH, which led to the destruction of metal supports and the caving formation. The underground waters of the sub-permafrost aquifer are chemically chloride-sulfate sodium-calcium with a mineralization of 3-5 g/dm3. According to microbiological analysis, they contain anaerobic and aerobic forms of microorganisms, including micromycetes, bacteria and actinomycetes. The activity of microorganisms is accompanied by the generation of hydrogen sulfide and carbon dioxide. The main types of corrosion – chemical (sulfate and carbon dioxide), electrochemical and biocorrosion are considered. The most hazardous is the biocorrosion associated with the active functioning of the microbiota. Forecasting and systematization of mining and geological processes are carried out taking into account the presence of two zones in depth – sub-permafrost and below the bottom of the sub-permafrost, where mining operations are currently underdone. The importance of assessing the underground space as a multicomponent environment in predicting mining and geological processes is shown, which can serve as the basis for creating and developing specialized monitoring complex in difficult engineering and geological conditions of the deposit under consideration.

scholarly journals Carbonaceous breeds as the material of engineering protection of Imeretinskaya valley (Sochi)

2019 ◽  
Vol 97 ◽  
pp. 04038
Author(s):  
Alexander Bakalov ◽  
Andrey Lavrusevich
Keyword(s):  
Ground Water ◽  
Water Level ◽  
Calcium Oxide ◽  
Surface Sediment ◽  
Mechanical Characteristics ◽  
Carbonaceous Material ◽  
Crushed Stone ◽  
Limestone Quarry ◽  
Geological Conditions ◽  
Engineering Protection

The experience of the use of carbonaceous breeds during the formation of the engineering protection embankments, in the territory of Imeretinskaya Valley is considered in the article. It is demonstrated how the measures of the engineering protection were held in the difficult engineering-and-geological conditions. The experiment on the use of local carbonaceous material took place on certain quarters, because of the lack of volumes of material of the embankment of the engineering protection. The soils of the Kamensk limestone quarry were used, different options of dumping of the carbonaceous soil were applied. It is proved that crushed-stone mix from carbonaceous material raises the indicators of the mechanical characteristics due to the natural cementing ability. In case when crushed-stone mix of lime marl was higher than the ground water level, calcium oxide promoted strengthening of the breed, allocating the connections, cementing the layers. There were the surface sediment and the deformation of structures in the sites, where crushed-stone mix of carbonaceous structure was waterlogged. The increase in the durability of soils of dumping because of the formation of the monolithic plate in the embankment basis from carbonaceous breeds can be used when carrying out engineering protection in the similar engineering-and-geological conditions.

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