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пїЅBody of groundwaterпїЅ means a distinct volume of groundwater within an aquifer or aquifers. This paper has as main objective creating a three-dimensional lithological model using borehole data for ROIL16 пїЅ Plain Vlasia groundwater body. RockWorks 15 is a software package for geological data management and visualization and it was chosen for analysing sub-surface data. The initial characterisation requires the collection of detailed information and data, such as geological and hydrogeological characteristics,...

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...

The reliability of forecasted long-term peat settlement under embankment is primarily determined not by the soil models used, but by the specific features of peat laboratory testing. This article presents the results of oedometer tests of various-height peat samples with squeezing of pore water towards only top or top and bottom faces. The load was applied to the samples in two ways: by gradual stepwise increase or all at once. The stabilization condition for each load was sample deformation not exceeding 0.01 mm ...

In the formation of the well under the influence of an axial load and speed core drilling shell is curved, with its lower bottomhole part consists of elements of different stiffness: a set of core and drill pipe. The researches allowed to formulate a number of conclusions. To determine the length of the half-wave in this part of the technological tools used energy method, according to which the whole work of external forces on the length of said potential energy goes into twisted drill. The half-wave length decrea...

Construction and Demolition (C&D) materials which consists mostly of concrete debris were deposited on landfills. The development of road network results in an increasing demand for building aggregates which are part of the road construction unbound subbase. For decrease of investment costs and prevention of spoiling natural resources, the C&D materials, such as fly ash, steel slag or recycled concrete aggregates (RCA), were applied as a subbase mix. Among many properties influencing the quality of road material, ...

Geotechnical monitoring aspects of construction activities in congested urban environment are discussed. Successful application of express methods, enabling mobile equipment use for soil tests is described. Case histories of such applications in Moscow historical downtown are given. Data, obtained by such monitoring, is analyzed, and a conclusion is drawn on the necessity to apply sparing technologies when construction operations are carried out in the vicinity of buildings in service. Development and redevelopmen...

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 (...

Intensive development of industry and urbanization have led to the increase of the waste water amount that pollute water flows. On the contrary, the need for water of satisfying quality continuously grows. The paper industry is one of those branches that are characterized by very high water demand and big amount of polluted waste water. In the meantime ensuring adequate quantity and quality of water is one of the most important goal of water resources management in paper industry. Water demand can be covered from ...

This work is aimed at investigating the carbonate collector micro-jointing using the results of the precision underground water level monitoring at the Mikhnevo Geophysical Observatory (пїЅMikhnevoпїЅ GPO). For a long period of hydrogeological observations from August 2013 to December 2016 a database of local mini-cones recorded in the observation well was formed. The leading factors that influence the process of the level recovery of mini-cones based on the systematization and generalization of selected mini-cone...

A large number of structural damages reported during the past decades around the world associated with a high geotechnical risk have highlighted the major attention that should be given to the expansive soil category in engineering practice. For avoiding or mitigating the effects of clay expansiveness on civil engineering structures before construction, the identification of soil parameters related to swelling behavior is considered essential in solving geotechnical engineering problems. This paper aims to analyze...

When operating waterworks, it is required to refine the data on actual stresses in different structural elements of the facilities. The authors put forward a nonconventional approach to expanding the waterworks observation network. The quantitative assessment of stresses in a structural element at the given moment of time is performed using borehole techniques of geomechanics. Later on, the change in the stresses and deformations is controlled based on the data on deformation of sidewalls and damage of galleries u...

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...

Foundation construction issues have emerged from ancient times, since antiquity, along with the constructions of dams, canals, ports and buildings with different destinations. On the occasion of these constructions, practice has shown that are obtained a low strain and a high stability if are included in their composition a distinct part that is lowered below the natural ground. The construction of foundations by ordinary methods becomes even more difficult if is made under the underground water level. Also when t...

Saline intrusion related to drought and sea level rise may result in changing of engineering properties of cohesive soils. To comprehend the variation of geotechnical properties of soils intruded by saline water, consolidation is one of the important aspects should be investigated. Undisturbed soil samples that originated from sediment in the Red River delta, Vietnam, were chosen. In the conditions that soils had been fully saturated by solution of four salt concentrations, 0.0, 9.9, 19.8 and 33пїЅ, the variation ...

The paper considers the main natural and technogenic factors forming the ecological state of the underground space and its influence on the long-term stability of buildings in such megalopolises as Saint Petersburg. Various contamination sources of Saint Petersburg underground environment, including sandy-clayey sediments, groundwater, gases of different genesis, microorganisms, as well as above-ground and underground structures, are analysed. Peculiar natural and technogenic processes, which activation or develop...

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...

This article summarizes and analyses some of the recent developments in strategies to prevent or reduce the effects of restrained volume changes on the behaviour of concrete mat foundations. Mat foundations are usually restrained to some degree externally or internally. For the evaluation of the influence of external restraint in mat foundations, friction and interaction models are introduced. Early-age cracks due to restrained thermal contraction can be serious because, unlike flexural cracks, they can extend thr...

The condition of underlying rock and footing masonry affects significantly technical condition of historical monuments. The caused subsidence may affect the origin of construction cracks, which may directly influence its stability. These impacts are mostly indirect and they are difficult to identify due to information lack. Footing masonry and long-term changes in the underlying rock are hidden underneath existing ground and floor level. If records related to foundations do exist, they are frequently fragmental. M...

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...

Due to large widespread of loess deposits in many parts of the world and reported geotechnical problems arising from collapse susceptibility due to soil sensitivity to wetting changes associated with subsidence and damages, advanced and detailed analyses for quantification of specific characteristics are necessary in order to select the optimal technical solutions in terms of structure safety and stability. This paper presents the analysis of various experimental testing results, with particular emphasis on the co...

Pile driving technology remains the most widespread method in Arkhangelsk where the presence of soft soils is an engineering-geological feature. There are situations when pile driving by hammer can be safe for existing buildings. Using two hammers allows to accelerate foundation works but it can damage the adjoining buildings. The monitoring of pile driving by two diesel impact hammers was carried out at one of the sites in the city. Vibration parameters were measured with triaxial accelerometer CMG-5 with continu...

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 highway E-80 is of strategic importance for the development of the main regional transport networks for South East Europe and it will provide optimal road connection with the Republic of Bulgaria and the Republic of Albania and wider with the other countries of the European Union. For the needs of preliminary design of the highway, specific geological investigations were performed (terrain and laboratory). Investigations are mainly focused on those parts of the terrain where the construction of tunnels, larger...

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...

Tarnow region is supplied with water from intensively exploited groundwater and surface water intakes located in the small area between Dunajec and Bia?a rivers. Three groundwater intakes are a part of the Tarnow Municipal Water Service, i.e. ?wierczkпїЅw, K?pa Bogumi?owicka and newly constructed Zbylitowska GпїЅra intake, as well as the intake of surface water in Zbylitowska GпїЅra. The chemical company Zak?ady Azotowe in TarnпїЅw has groundwater intake located in TarnпїЅw-Mo?cice, and one of surface water locate...

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...

Manifestations of exogenous geodynamic processes in geomorphological objects at this stage is defined as damaging or destroying human life environment, leading to significant changes in the structure of the earth's surface. The term "exogenous geodinamic processes" refers to the concept of EA Likhachev, DA Timofeev "geomorphological danger" by the actions of these processes may be a crisis, disaster or catastrophe for a particular community of people and their economic structure. The factors leading to the express...

The article is devoted to one of developing directions in the area of improvement of construction properties with soil injection method fixative solution injection in soil under a lot of pressure the result of which happens to cardinally change structure massive soil and the formation of a rigid routinely inscribed in earth cover and forming along with compacted soil structure dubbed пїЅGeocompositeпїЅ. The method found wide application how for improve mechanical property of soils under new construction as well as...

In water scarce districts of the Akmola region the areas were revealed, perspective for carrying out exploration on underground waters and the card of forecast resources of underground waters of the Akmola region of scale 1:1 000 000 is constituted. As the main methods of researches are used: decryption of satellite images using cloudless fragments of space pictures of Landsat-8 from 2013 for 2016. In case of decryption of satellite images of the Akmola region comic pictures of the territory on 6 sites are process...

The Fourier two-dimensional series is used for classification of surface irregularities of rock joints. The expansion coefficients of this series are employed to form an absolute indicator of waviness of joint rock surfaces. The indicator serves for classification of surface irregularity of rock joints. The method has been applied to several real rock samples and the results are presented in the form of graphs. A similar visual comparison is often performed in geotechnical practice when joint rock coefficients are...

By the example of the new highway project in Moscow, the paper scrutinizes in detail the evaluation procedure of the differential and integral economic risk caused by geological hazards. Based on the analysis of engineering geological conditions at the construction site as well as the projected design for highway and bridges, the hazard of landslides, karst and suffusion processes and waterlogging was assessed. It is proved that for any scenario of landslide process (either deep or shallow landslides), the risk of...

The design and the execution of railways infrastructures imply exigent measurements not only from technical point of view, but also regarding the quality of the construction related or connected to the safety of the passengers. The technical norms and the continue development of the construction materials offers the possibility to realize infrastructures for railways that fist technically and economically to the concept of environmental protection. The geosynthetic materials involved in designing and maintenance o...

Protection of groundwater against pollution is an important part of maintaining sustainable development. In addition to the impact of the anthropogenic activity, groundwater resources may be exposed to many different kinds of pollution e.g. during floods. In such areas, knowledge about spreading mechanism of pollutants can contribute to choose appropriate preventive protection e.g. hydrogeological, hydraulic, geotechnical or other different measures. The presented problem can be solved by finite element method in ...

Disposal of increasing waste production in mining is currently a serious problem of civilization. The most common way to dispose of mining waste is storing them on impoundments. The hydraulic transport is advantageous from the standpoint of service and perhaps economy too, but the geotechnical properties of the resulting sediment are poor especially when saturated. For the design and construction of safe dumps with minimum impact on the environment the knowledge of the geotechnical properties of sedimented mining ...