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The Road materials are exposed during the operation to the effects of traffic loads and climatic influences, in particular changes in air and humidity temperatures, which are reflected by cyclical changes in pavement and subsoil. Strain of different materials is very different its the same load and depend on its deformation properties. Strain of material and substance are generally characterized by deformation characteristics that are an important input for the calculation of stresses and deformation of the paveme...

The fundamental element to be ensured during laboratory tests is the control of the boundary conditions in terms of stress, strain and drainage conditions. The determination of the effective stresses is inherently associated with full saturation of soil specimen, as it allows to apply the Terzaghi's principle of effective stress. This paper describes the influence of partial saturation of soil on shear strength and deformation properties obtained from laboratory tests. The use of back pressure method, as the most ...

The article presents a failure of an existing road culvert located in the provincial road embankment that was built on an organic soil. Recommended road designing methods require the involvement of high volume of native soils. The problem occurs when there are only weak soils in the area. The particular group of soils consist of organic soils. Even in the case of the organic soils, there are several different methods for safe settlement of the designed road surface. In current case in order to reduce the settlemen...

This article presents the numerical analysis results obtained with a finite element of a corrugated steel box culvert. This article also presents the analysis of the main characteristics of the backfill soil, as well as predicting the value of the material properties. The analyses the plastic soil behavior and its interaction with buried flexible structures. Among all the theories available, three different theories were selected that describe the model properly. The theories used and compared are called Mohr Coul...

Nonwoven geotextiles have been used as filter and drainage materials in geotechnical works in the past 40 years. Geotextiles are easy to install and they help to minimize clogging effect of drainage systems, however sometimes geotextiles may not drain water as effectively as was expected. Drainage and filter layers have to cope with more severe clogging mechanism (chemical, biological and physical). Clogging, which involves the accumulation of material within the void space of drainage medium, is a problem in drai...

This study delineates groundwater potentiality assessment for growing population, irrigation and industrial development, combining with geo-informatics and field data for hydrological research in Kalmykia, Russia. Various thematic layers wear used along with existing maps to prepare groundwater potential zone (GWPZ) map. Weights were assigned to all above factors according to their effectiveness, sensitivity and relevance to groundwater potentiality. Furthermore the resulting groundwater potential map has been cla...

Safe management of tailings storage facilities requires evaluation of embankment stability dams. In case of dams constructed by upstream method, special attention is drawn to evaluation of liquefaction potential. This requires evaluation of state of saturated, not compacted tailings material containing various amount of fines. Conventional methods based on static or dynamic sounding and standard sampling can?t assure required accuracy in determination of void ratio of deposited material. The paper presents results...

In order to increase the resource potential of the Volga-Ural oil and gas province, natural bitumen deposits have been commissioned in recent years. The pilot-industrial development of some near-surface bituminous deposits encountered numerous problems due to insufficient information on the hydrogeological conditions of the sites under study. In this paper, conditions of the groundwater deposits formation at natural bitumens deposits of the eastern side of the Melekess depression and the western slope of the South...

This article examines the conditions and prospects of technical water supply with a requirement of up to 20,000 m3/day of the soda ash production factory in the amount of 300,000 tons per year in Aralsk district (Zhalgizagash area) of the Kyzylorda region. The geographical position of the Aral Sea basin, the relief, the amount of precipitated water and the hydrographic network are described. Consumers of soda ash are also presented in this article. The construction of the soda ash production factory will have a si...

Mining exploitation in an underground mine is the main factor disturbing the balance within the rock mass. By removing the obtained raw material from the rock mass mining activity leads to changes in the broadly understood state of the natural environment. Extraction of the raw material ? hard coal with barren rocks is often associated with the need to undertake dewatering of the rock mass and discharging mine gases into the atmosphere. The process of extracting the raw material from the deposit and the accompanyi...

The paper presents the results of the research on contemporary permafrost dynamics associated with climate changes in Eastern Chukotka region (Chukotsky peninsula) and its impact on indigenous peoples? communities. The studies are based on the field monitoring works and geodetic measurements within several settlements as well as remote sensing data analysis and statistical results processing. The reasons of permafrost exogenous processes dynamics were indicated. The research was shown that the main threats for the...

The post-mining excavation "Piaseczno" is located in the south-eastern part of Poland, on the left bank of the Vistula River. After the extraction of sulfur and later sands in 1981, the pit remains in an unliquidated state. Its area is 167 ha, and the depth reaches 46.0 m. During the process of self-flooding of the excavation with water flowing in from the Neogene and Quaternary aquiferous, water level reached an ordinate of 138.0 m. This state has been maintained since 2012 by draining water from the created rese...

In this paper, a map zonation of landslide hazard and mass movements risks at the Goloord area (north of Iran), using Analysis Hierarchical Process (AHP) was performed based on the parameters of slope, slope direction, elevation, rivers, precipitation, faults, roads, geological unit and land usages. For optimization of the various parameters? effect that would lead to landslide occurrence, the effect dimensions of each of these layers were applied and the zonation of landslide risk in the region was mapped. The AH...

Kazakhstan is located in the arid zone in the conditions of water supply deficit. Irrigated cropping is the basis of agriculture for its southern regions. Akdalinsky irrigated massif (Almaty region, Kazakhstan) belongs to rice irrigation systems. Their exploitation causes the salinization and contamination of soils and groundwater. Mathematical modeling is the most effective method of solving hydrogeological problems associated with anthropogenic environmental impact. It is advisable to create permanent mathematic...

When it comes to efficient use of water, especially groundwater, a water / water heat pump is a very good example of its high efficiency at the optimal qualitative and quantitative conditions of the groundwater used. Hydrological and hydrogeological conditions on the territory of Slovakia is for several factors, mainly with the geological structure, location and clime. All this terms influence richness of surface, underground but also mineral water. The main objective of this article was based on knowledge of the ...

The authors of this article describe the suitability of using light dynamic penetration in the target area. The area of this survey was selected on the already reclaimed area, which, however, proved to be unstable. The main objective was to locate individual water-saturated horizons in the locality and, eventually, to determine the shear areas on which instability occurs. For this reason, several geodetically measured points were selected for dynamic penetration measurement. By this method, the water-saturated hor...

Lately, in our country, the necessity of expanding the transport infrastructure works has led to the necessity of designing and executing engineering constructions in areas with lands considered difficult in terms of physical and mechanical characteristics. According to the Romanian and European norms, sensitive clay of low consistency is included in the category of difficult land. This paper presents the main research stages of the physico-mechanical properties of sensitive clays found on a section of a highway i...

Various techniques for ground improvement are in use many decades to reduce the settlement of embankments and to accelerate the consolidation settlement of soft soil layers such as preloading, soil replacement, lime/cement stabilization, dynamic consolidation, vibro-stabilization, vertical drains, deep mixing methods or reinforced soil. Moreover, other more innovative solutions recently developed are also available, including natural and synthetic fibres or tyre powder penetration. Vertical drains, stone columns, ...

The main goal of compaction is decreasing the porosity of soils. Gravel columns belong to relatively new methods of improving the soil characteristics. Using them it is possible to expect to accelerate the consolidation of the subsoil, but also increasing the bearing capacity and decreasing the settlement of initially unadvisable soils. Because it was missing adequate research in this field, the design of gravel columns was based a long time on empirical experiences. Particularly based on foreign knowledge are pre...

This article presents the possibility of using computed tomography (CT) in geotechnical engineering including geocomposite testing. This technology enables dynamic, fast and non-destructive analysis of such properties as homogenization rate and porosity, and even the determination of the shear area angle of the samples, as well as it enables the understanding of the mechanisms of sample destruction. The conducted research confirms an exceptional suitability of the application of medical X-ray CT scanners for engin...

The article is concerned with underground and pit water hydrodynamic regime during Shumicha deposit Kizel coal basin storage underground treatment and after closure and inundation of self-titled mine. On the area of the deposit a heavy fissured-karst water level of Visean and Serpukhov stages carbonate deposits, fissured-stratal water complex of Visean stage coal-bearing series and fissured-stratal and fissured-karst water complex of Tourian stage of the lower carboniferous are developed. In vivo rivers Kosva and ...

Roads and highways provide a linear source of environmental (air, surface water, groundwater) pollution. This influence depends on the road class, the traffic intensity and the accompanying infrastructure. These factors are the basis for determining the groundwater vulnerability in the vicinity of roads. Road investments are intensively developing in the countries of Central and Eastern Europe, including Poland. 2350 km of new expressways and highways have been built in the period of 2005-2016 in Poland. According...

The main aim of the paper is to introduce theoretically developed curve which describes load settlement curve of the pile. A majority of European and US standards and recommendation indicates static pile load tests as a basic procedure to confirm bearing capacity of piles. The paper presents systematically made review of pile head settlement prediction methods, and static pile load test interpretation methods used in Europe, and United States. Using practical examples of static pile load test author indicates diff...

This paper presents a comparative analysis using Finite Element Method (F.E.M.) of the foundations with different shapes (cylindrical, truncated cone and hemispherical plate), placed on cohesionless soils with different compaction degrees. The comparison was performed function of the bearing capacity and of the states of stress and deformation that appear in the foundation ground for different load steps to which the foundations are subjected. The foundation systems studied in this paper consist in foundations rea...

Assessment of changes in hydrogeological conditions of groundwater deposits under climatic effect and human impact requires in-depth study. It especially concerns groundwater deposits of drinking quality. Providing drinking water to the population of large cities and most of the medium-size and small populated areas of Kazakhstan is based on these changes. The UN carries out special control and analysis of the state of drinking water supply to people around the world, which, unfortunately, testifies to the catastr...

This work will deal with the use of various geophysical methods for exploration of the sliding area and the determination of the interface between the layers in the sliding area at the Bohu?ovice Quarry. For this purpose, light dynamic penetration will be carried out, which is a dynamic penetration test that is used in-situ to determine the soil resistance of penetration cone. A constant dynamic impact is used to constrain the cone, which is due to the free fall of the ram with known weight and constant fall heigh...

In late January of 2016 (27/01/2016) at Mining Section 14 (Block 7/10) of the Kukisvumchorr flank of the Kirovsk Mine (Khibiny), a violent seismo-dynamic event (lgE ? 8.11) took place to induce significant destructions and deformations of workings at Drill & haulage horizon 4 (4DHH) with an average elevation of +236 meter, 1DHH (+183 m), and possibly at 2DHH (+209 m), which is unavailable for examination. The dislocations, deformations and roof break formation occurred both at the cross-measure (predominantly) and...

The irregularity of rock joints in rocky terrains contributes considerably to better mechanical stability of these terrains. The assessment of the stage of surface irregularities (asperities) of jointed surfaces in rock massifs plays an important role when shear strength of rock joints are evaluated. For this purpose it is necessary to analyze morphology of surface reliefs of rock joints. The digital replicas of surface reliefs are ideal tools for such a morphology analysis. This paper describes a new method for d...

Joints in rocky massifs usually form a space network that is hidden under the surface of terrains. Although normally invisible, same parts of such networks may emerge when excavation work is running in terrains. The irregularity of joint rock surfaces are characterized by joint rock coefficients that serve for computations of shear strength of these joints. This is important for evaluation of the mechanical stability not only the rock joints themselves but also for the mechanical stability of rock massifs that are...

Recycled Concrete Aggregate is a material resulting from the crushing of concrete elements. Currently, as a result of increased demand for natural aggregates, artificial aggregates are sought as an alternative materials in civil engineering activities. Recycled Concrete Aggregate characterizes high strength, but some properties, both mechanical and physical, remains unclear, which often discourages engineers to use this material. The paper presents the results of the California Bearing Ratio (CBR) and cyclic CBR (...

The article concerns the problems of assessment the stability of the historical mine excavations which will be adapt to the underground tourist route. The issue is very important because of the special safety requirements for people (visitors), which do not have specialized safety training for employees of a typical underground mines. Post-mining facility, open to the public in 2013 in Krobica in Poland was characterized. Excavations from the XVI-XIX centuries are located in the rock mass characterized by a diffic...

The paper considers the issue of effective scale inhibitor applied while developing an oilfield using steam assisted gravity drainage technique, and presents a case study of injecting superheated steam of 140-160?C in the Ashalchi oilfield. In such conditions, organophosphorus chelating agents conventionally used to prevent scale formation degraded and proved to be ineffective. The authors analyzed chemical composition of scales deposited on the electric submersible pump pulled from one of the wells in the Ashalch...

Groundwater represents worldwide the main reserve of freshwater for human needs. The increasing demand, combined with the use of unsustainable systems for groundwater management, leads to a remarkable decay in its quality and quantity, especially in many cities of the Global South, where the fast urban growing frequently bring to environmental critical issues as the case of seawater intrusion for coastal aquifers. Dar es Salaam, in Sub-Saharan Africa, is one of these cities, with more than 4 million of inhabitants...

According to Polish law, the natural concentration of sulphur (II) compounds in groundwater higher than 1 mg/L can be a base to find them as a curative water. Sulphur (II) occurs in groundwater usually as hydrogen sulphur or bisulphide ion. Their concentrations and ratios can vary dependent on prevailing conditions. Very often water stays a long way from intake to the spas. What is more in health resorts curative waters could be mixed. These processes can influence on total concentration and forms of occurrence of...

Large amount of methane trapped in post-coal extraction gobs and galleries in abandonment hard coal mines could be valuable carrier of energy. Methane produced by vertical well could be used to generate both, heat and electricity. However there are many problems with efficiency production of this methane. In dependence of geological structure, coal seams layering and technology used to drilling vertical boreholes from the surface, coal mine methane (CMM) production could be profitable or gives economic losses. Wit...

The area of interest (Slatinice wastedump) is located on the southern edge of the MostпїЅs basin central part (North Bohemia, The Czech Republic). The wastedump was deposited into the space of the fomer lignite openpit mine, called Slatinice. The body of the wastedump has an ovoid shape with the longer axis oriented in the NW пїЅ SE direction. The major thickness, about 100 m, reaching a dump in its central part. Monitoring wells have been realized in the area of interest between the years 2013 пїЅ 2016. The aim o...

Piled raft is a recent innovative foundation. The superstructure loads are transmitted by piles and raft. It provides safe and economic foundation. In this paper, the influence of raft-subsoil interaction on a lateral behavior of the foundation was investigated. Three-dimensional models of the piled raft and pile groups were developed by ABAQUS program. Then, their lateral deflections were compared. A gap between the cap and subsoil in pile group was varied from 0.25m to 1 m. In addition, the pile spacing was chan...

On the basis of the system tests of pre-stressed anchors in the anthropogenic homogeneous earthwork, valuable material has been obtained to describe the rheological features of the trench with anchors. Anchors were designed as temporary construction. Anchors were made in compacted soils with no detailed geotechnical parameters. The soil material was treated at the design stage as having a significant random distribution of mechanical and physical characteristics. This resulted in the anchor system test being the b...

This article discusses typical problem of industrial floors, i.e. cracks. Slight cracks are usually effect of volume changes such as shrinkage and creep. There are also other reasons why cracks appear. For example: inappropriate design, heavier load than expected or wrong realization of the concrete slab. Cracks, which are caused by mentioned reasons, are wider and deeper. Wide and deep cracks can cause another defects such as concrete crumbling along the crack. They can be a problem for maintenance and service li...

The purpose of this research is to vertically define the aquifers from the Buzau River alluvial fan. The necessary information was collected from hydrogeological boreholes and it consists of the lithology encountered, the well design, more specifically the location of the screen, and the hydraulic head. In the first part, the studied area was divided by creating several well alignments, which were used to create cross-sections through the alluvial fan. The resulting profiles present the correlation between the lit...

Concrete structures exposed to water pressure, such as underground basements, water retaining structures and tunnels, have to be designed as watertight in order to prevent damage due to moisture or water ingress. The design and execution of watertight concrete structures is regulated by guidelines, nevertheless, after execution they may suffer from various failures. The most frequent failure is leakage of ground water through cracks. Major steps in the design process of watertight concrete structures are summarize...

A stone column is often used technology of a ground improvement. The design of stone columns is still based on experiences and empirical computational methods. The most important properties of stone column are unit weight of a soil, relative density, strength and deformation properties. The total resistance and deformation of stone column is also significantly affected by properties of the original subsoil. The article deals with determination of the relative density of the stone columns by using the in пїЅ situ t...

In the underground mining there are many sources of water hazard. Among them, there are water hazards from underground water reservoirs, located in old workings. Mine water inflow from such reservoirs can occur within a few seconds. Within the moments of a sudden and large water inflow, it is most often impossible to withdraw a crew from an endangered front of a mining excavation. In order to eliminate existing water hazard, exploratory boreholes drainages of water reservoirs are performed. In this paper the autho...

The preconsolidation pressure is an important parameter that determines the value of stress history exerted in the past on the subsoil in the geotechnical engineering. The Eemian gyttja is an organic soft soil from the пїЅZoliborz channelпїЅ located in Warsaw. These soils are used as a base construction in the foundation engineering. The laboratory tests that can be used to determinate the preconsolidation pressure, mainly uses the relationship between the stress and void ratio or strain. In practical geotechnical...

The volume of transported goods is still rising. Road transport is congested the most. However, still bigger and bigger pressure on more ecological ways of transport is registered due to unfavorable effects of road transport. The railway is one of the most ecological ways of transport of heavy loads. Nowadays, electric engine is the most used way of locomotives traction thanks to electrification of most of railways. This fact significantly contributes to elimination of ecological influence on environment. Thus, th...

Vehicular traffic in major cities is the prevailing means of personal transport today. Nonetheless urban public transport has become more important. Its main advantage is the number of simultaneously transported people. This not only reduces the amount of greenhouse gases emitted, but also puts fewer passenger cars on the roads. The use of public transport is thus ecological and improves the flow of traffic in major cities. Metropolises today utilize comprehensive urban transport systems which combine metro, trams...

The interpretation and representation of the ground materials distribution and of their properties is a fundamental task in engineering geology practice. Engineering geological models can help to plan and developed the site investigation activities as they constitute an idealization of the ground, quite useful during the office and field tasks. The selection of the site investigation techniques can be more efficient when a ground model is idealized or sketched. The interpretation of the site investigation data mus...

Slovakia with regard to its small size (approximately 49,000 km2) is relatively rich in mineral water sources. This fact also applies to conditions of eastern Slovakia, which is mainly in the northern part concentrated numerous mineral springs in addition to several spas and bottling plant minerпїЅl waters. Eastern Slovakia is part of the Western Carpathians, which are of geological terms divided into five structural-facial zones. In addition to the front to the west of Slovakia interventions on its east: - Flysch...

The article presents the results of the research carried out in order to evaluate the possibility of using the groundwater of the Raba River basin for human consumption, using an indicator dedicated for groundwater (GQI). For this purpose an existing database that contains the results of analyzes of groundwater samples collected from October to December 2005 from wells (18 samples) or springs (21 samples) located in the Raba River basin was used. Samples were taken by one person according to the procedure describe...

The need for construction of new buildings is currently still growing. For construction are also used areas that were previously labelled as unsuitable or less suitable in terms of subsoil. The design, construction and implementation of building foundation, including subsoil modifications (foundation base) has a decisive influence on the building lifespan and its safety. This article presents an application of risk analysis method Umra (Universal Risk matrix analysis) to classify different types of subsoil. The me...