Application Of Lime Marl In The Formation Of Areal Groundwater Mounds Of The Imereti Lowlands

2019 ◽  
pp. 105-111
Keyword(s):  
Surface Deformation ◽  
Olympic Games ◽  
Drainage System ◽  
Crushed Stone ◽  
Protection Measures ◽  
Geological Conditions ◽  
Carbonate Material ◽  
Complex Engineering ◽  
Surface Settlements ◽  
Engineering Protection

The article deals with the experience of applying lime marl in the formation of engineering protection embankments on the unique territory of the Imereti Lowlands in terms of its engineering and geological conditions. It is known that this site became a place for construction of various facilities for carrying out a wide complex of sports actions of the Olympic Games-2014 (coastal cluster). It is shown how under complex engineering and geological conditions, engineering protection measures were realized. On the support sites - an experiment on the use of local carbonate material for backfilling of soil embankments of engineering protection was executed. Three versions of the backfilling of carbonate soil were used. It is established that the crushed stone mixture of lime marl in the course of 1-2 years of operation of the engineering protection structure increased the parameters of its mechanical properties due to natural cementing ability. In the case where the crushed stone mixture of lime marl was above the groundwater level, calcium oxide contributed to the strengthening of the rock, releasing the cementing layers of the compound. This confirmed the opening of the contact of the underlying soils and soils of engineering protection, as well as the absence of surface deformation in these areas during the operation of the erected structures. In the areas of quarters where the crushed stone mixture of lime marl was flooded as a result of malfunctions of the drainage system, surface settlements and deformations of the structures occurred.

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.

ANALYSIS OF BANK PROTECTION MEASURES CANYON IN THE COAST OF NEW IMERETI VALLEY IN THE ADLER DISTRICT OF SOCHI

2018 ◽  
Author(s):  
С. Лещенко ◽  
S. Leschenko ◽  
А. Катлине Коблев ◽  
A. Katline Koblev
Keyword(s):  
Olympic Games ◽  
Coastal Protection ◽  
Design Decisions ◽  
Protection Measures ◽  
Bank Protection ◽  
Winter Olympic Games ◽  
Olympic Village ◽  
Under Construction ◽  
A Site ◽  
Engineering Protection

The Imeretinsky lowland – the central fragment of a large Black Sea terrace of the Caucasian coast of Russia, is located in interfluve the rivers Mzymty and Psou. In its central and western part large sports complexes of the winter Olympic Games "Sochi-2014" and the Olympic village are under construction. It has led to necessity of engineering protection of coast from the constructed port Imeretinsky to east board of cape of Konstantinovsky. In the report the site located from the Southern pier of port to the western board of cape of Konstantinovsky is considered. On a site the underwater canyon Novuy is located. To provide stability of a shore, the project of coastal protection now is realized. This project provides building in a surface part of a beach ferroconcrete grille on piles and a slope from concrete cubes. Before should be fill an artificial pebble beach in width not less than 50 m. As has shown inspection of coastal protection constructions, rates a beach lag behind rates of its washout. The width of a surface beach makes now no more than 13 m. For scoping executed embankments sandy a material comparison bathymetric shootings before port building (2007) has been made and April, 2012. By comparison is established that slept pebble the material is at the bottom and doesn't move waves on coast. Thus, massed filling the pebble material, coasts of Imeretinsky lowland spent recently on a considered site, haven't led to formation of a steady surface beach in design width of 50 m. On this site, and also on a site around Konstantinovsky's canyon updating of design decisions is required.

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.

scholarly journals Analysis of Ground Deformation Caused by Subway Tunnel Excavation in Kunming

2021 ◽  
Vol 236 ◽  
pp. 03029
Author(s):  
Ping Wei ◽  
Liuchuang Wei
Keyword(s):  
Ground Deformation ◽  
Horizontal Displacement ◽  
Subway Tunnel ◽  
Buried Pipelines ◽  
Tunnel Excavation ◽  
Protection Measures ◽  
Geological Conditions ◽  
Soil Stress ◽  
Foundation Deformation ◽  
At Home

Research at home and abroad shows that subway excavation often causes soil stress loss, resulting in settlement deformation and horizontal displacement of stratum. Therefore, combined with the special engineering geological conditions in Kunming area, the foundation deformation caused by subway excavation is studied, so as to provide an important foundation for proposing the protection measures of surrounding buildings and buried pipelines and promoting the construction of subway.

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 An Enhanced Approach to the Spatial and Statistical Analysis of Factors Influencing Spring Distribution on a Transboundary Karst Aquifer

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2133
Author(s):  
Veronika Iván ◽  
Stefania Stevenazzi ◽  
Licia C. Pollicino ◽  
Marco Masetti ◽  
Judit Mádl-Szőnyi
Keyword(s):  
Karst Aquifer ◽  
Statistical Technique ◽  
Decision Makers ◽  
Protection Measures ◽  
Factors Influencing ◽  
Contact Distance ◽  
Five Factors ◽  
Geological Conditions ◽  
Karst Areas ◽  
Terrain Elevation

Karst aquifers are indispensable, yet vulnerable, resources; therefore, they require a comprehensive protection strategy. Since springs are the terminal points of the karst flow systems, knowledge of their distribution is a key element for the better understanding of groundwater flow, availability and vulnerability. The present study aims to introduce a data-driven analysis by the application of a spatial statistical technique (Weights of Evidence (WofE)) for the evaluation of factors influencing spring distribution in karst areas. A workflow was developed for investigating two questions: where will the springs locate, and where will the permanent springs evolve? This workflow has the potential for application to unconfined karst areas. This enhanced approach was applied to an unconfined transboundary aquifer, the Gömör–Torna Karst (HU and SK). The roles of five factors was statistically investigated: terrain elevation, distance to faults, distance of the carbonate–non-carbonate rock contact, distance to sinkholes, and precipitation distribution. The validation procedures confirmed the effectiveness of the approach. The resulting predictive maps are useful for decision-makers to delineate areas holding potential karst springs and to address water availability problems and protection measures. In addition, the WofE technique improved the comprehension of the geological conditions favourable for the formation of the springs.

scholarly journals Determination of pressure in the near-ground space pile terminated and broadening of the surface

2018 ◽  
Vol 251 ◽  
pp. 04062
Author(s):  
Natalia Kupchikova
Keyword(s):  
Numerical Modeling ◽  
Circular Cross Section ◽  
Analytical Form ◽  
Soil Mass ◽  
Software Systems ◽  
Discrete Method ◽  
Building Foundation ◽  
Geological Conditions ◽  
Complex Engineering

The article deals with the problem of determining the stress state of a complex pile structure with end broadening in the form of a sphere in the soil mass in the analytical form by a discrete method. The calculation schemes for determining the stress tensor at the boundary of the pile of square and circular cross-section with expansions in the soil massif are shown. The elements of the polynomial are found by the discrete method in rectangular and spherical coordinates, which is a cumbersome complex mathematical apparatus for a modern design engineer. The stresses are determined. At present, as the analysis has shown, the solution of complex geotechnical problems of soil bases and foundations for different types of loads in numerical modeling is carried out using modern software. Numerical modeling and calculation with the help of specialized software systems allows to consider the system “building-foundation-ground foundation”, as dynamic, integrally developing. However, the interaction of the components of this system requires a theoretical justification of the resistance of foundations in the ground environment, especially in complex engineering-geological conditions.

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