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For many times, the authors participated in the projects on designing and construction of main pipelines in the Russian north. Accumulated experience brought us to the understanding that the available methods aimed at the assessment of natural risks for pipelines [1, 4-6, 12, 13] have sufficient drawbacks. These methods base on the correlation between the registered accidents and unique landscape units or different Quaternary deposits, thus, the results are hardly comparable and poorly adapted to the GIS of other ...

The landslide cycle of development of deep-seated landslides begins when a new landslide block is being separated from the bedrock mass. It completes when this landslide block is displaced to the level of a landslide terrace, situated on the landslide slope. The initial stress state in the bedrock mass with horizontal earth surface (before the landslide block forms) is regulated by the Mohr-Coulomb criterion. The appearing of a landslide cirque as well as the sliding basis causes the change in the initial stress s...

An important prerequisite for geotechnical foundation analysis is to have a sufficient amount of quality data on soil parameters. In difficult geotechnical soil condition, e.q. thick deposits of soft fine-grained unconsolidated soils, particular importance should be given to the selection and performance of field and laboratory investigations. This paper shows an example of geophysical and geotechnical investigation works, which were performed in Croatia (the city of Opuzen) for the purpose of foundation design. T...

The aim of paper is the evaluation and analysis of the change of rainwater runoff for the proposed extension of the building and the assessment of the impact of the extension of the building on the drainage of flood waters. The annex is situated on the northwest side of the SO1 building and on the northeast side of the SO2 building. The extension extends the existing surface and connects the two existing objects to a single entity. The proposed extension is located in the Q20 floodplain area of the Lobezsky stream...

Based on the engineering and geological conditions of the Zhongjie Station of Shenyang Metro Line one, the MIDAS finite element software was used to simulate the four different construction sequences of the tunnel excavation in the PBA construction method, and the same surface loads and fixed Under the condition of constraint and soil parameters, the simulation study shows the changes of arch settlement and surface settlement during the excavation of the tunnel, and the recommended scheme for the excavation sequen...

Highway section taken in the analysis, with a length of 19.47 km and between km 27 + 620 m ? 47 + 090 m, contains structures, earthworks, hydrological works for improvement of river beds, water collection and drainage, etc. Due to the location conditions of this section (geography, terrain morphology, hydrology and hydrogeology of the area, climate, urban settlements) permanent research on the structure of resistance (foundation, embankments and debris) are required (see [3], [4]). The work, based on several labor...

Submerged piles are often used as anchoring system in foundation of structures. They help to transfer the ground pressure acting on sheeting to the subsoil. They are mostly used in anchoring of the sheet piles, pile and underground walls into the surrounding soil massif. Other options of use are support walls and bank walls, under-washing protective walls, bank fortifications, swelling-up equipment in ship berths, etc. Anchoring system consists of drawing rod, fixed with its one ending to sheeting and with the oth...

Soil Swelling is a relatively complicated phenomenon not yet fully understood by researchers; however, it has been proved to be a physiochemical phenomenon related to soil and location. A tunnel support system can undergo failure upon completion of construction unless sufficient knowledge of expansive soil behavior is obtained and due procedures are followed to prevent the adverse effects thereof. This is a comprehensive study conducted on the physiochemical parameters affecting soil expansion, aimed at determinin...

The problem of negative anthropogenic impact on formation, distribution and usage of groundwater within the platform denudation plains of the arid zone of Central Kazakhstan is quite relevant. This region faces an extreme environmental pressure, and at the moment is undergoing a strong anthropogenic effect. High rates of exploration of mineral, energy and agricultural resources resulted in creation of towns and large industrial agglomera-tions (Karaganda, Zhezkazgan, Balkhash) and a big number of villages (Aksuat,...

The Kuznica Warezynska surface reservoir with an area of 5.6 km2 is located in the Silesian district, southern Poland. It was established in 2006 as a result of flooding of a sand pit after over 40 years of mine operation. Currently, it has various functions, the most important of which are flood control and recreational. The long-term dewatering of the pit and its subsequent flooding caused significant changes in the geochemical conditions in the Quaternary aquifer composed of sands and gravels. In addition, nume...

A significant part of geotechnical structures such as parts of tunnels, adits, retaining walls, etc., is made of reinforced concrete. In reinforced concrete structures there are often cracks in places where they were not considered in the design. It is up to the engineer performing the fault diagnosis to determine the nature of the cracks, the cause of the occurrence and the follow-up measures to prevent their further development or eventual sanitation. The principles of conventional methods of visual diagnosis of...

Clay soils are generally considered to be one of the risk groups of soils due to their specific mechanical behavior in geotechnical practice. Geomechanical clay properties have been investigated depending on the content of diatoms [1]. In the framework of the research project of the Technology Agency of the Czech Republic TA 02011350 ?Investigation of properties of diatomaceous clays and methods for improving their structure", clay properties have been investigated depending on the content of diatoms. To investiga...

The health resort Duszniki-Zdroj is located in the south-western part of Poland in the Sudety Mountains. The southern part of the city ? the Spa area ? contains medicinal waters intakes. What is interesting, all of them are flowing wells. The spa part of Duszniki Zdroj is located at the northern edge of the Orlica-Bystrzyca Metamorphic Complex. At present, there are nine boreholes with medicinal waters, three of which are exploited. The total discharge from these intakes is 31.96 m3/year. The mean discharge over m...

In 2017, on the order of the Regional Directorate for Environmental Protection in Katowice, the study entitled "Identification of pollution sources affecting the chemical composition of water in the area of Natura 2000 The Cieszyn Tufa Springs PLH240001" was prepared. The unique karst area "The Cieszyn Tufa Springs" is located in the Western Carpathians, in the watershed of the Vistula and the Oder. The studied subslope, descending springs, with the discharge of 0.001-2.5 dm3/s (2017), drain the first aquifer, ass...

The theoretical analysis is based on the mathematical models of morphological patterns of the thermokarst plains and thermokarst plains with fluvial erosion in case of the ?synchronous start? of the thermokarst processes and little change of climate. The synchronous start means that the initial thermokarst depressions had appeared during a relatively short period and then only their size changed under thermos-abrasion or they disappeared due to their drainage by erosion streams (at the thermokarst plains with fluv...

Shallow mass movements represent a significant portion within the vast family of landslide phenomena. Moreover, their detection, monitoring and stability analysis is not an easy task. Analytical stability models are often used for the purpose. Their formulation ranges from extremely simple ones to rather complex formulations which include a number of physical parameters intrinsic to the terrain as well as external forcing agents. The application of such models seems to be strictly site-specific as various authors ...

Diagnostics and control of the hydro-technical construction state are the most important actions at the system of safety keeping with exploiting high-pressure dams. Considered in the paper stress-strain control system is attributed to special one in exploiting period. That system is non-traditional for hydro-technical constructions. It is aimed at specifying model calculations of stress-strain state of constructions, defining peculiarities of its deformation and can be used to enlarge the monitoring system at plac...

Extensive research, conducted by Kazakhstani specialists in Earth sciences, resulted in accumulation of a big amount of information. Hydrogeological data are scattered and unsystematized, and it makes their processing and analysis very difficult. Therefore, it is necessary to create a unified information base, containing profile hydrogeological information and data from the related areas of knowledge, which will help to solve scientific and production tasks efficiently. Informational and analytic systems are devel...

The article presents design and verification of a road embankment supported by reinforced retaining walls with a passive facing system, which was the most optimal and effective method to design a road embankment in a cramped space in a flyover intersection of highways. The cross section presented in the paper consists of three roads at different levels, when the road in the middle is placed about 8 m above the other ones. The design was done using the analytical computational model and the numerical modelling, bas...

For proper construction and operation of the industrial park there was proposed and already realised a 38 groundwater extraction well system from which optimum pumping rate is required to keep the groundwater level at required elevation. To address this challenge numerical groundwater modelling system using TRIWACO simulation package has been applied. The modelling package utilises finite element method (FEM) that can handle complex aquifer parameters for running quasi three-dimensional groundwater flow model. Bas...

In the XX century many drillings for exploration and exploration of oil and gas were conducted in Northern Bulgaria. Up to 1500 boreholes with a depth of several hundred meters to more than 5000 m have been drilled on its territory so far. During drilling, aquifers with different hydrochemical properties have been registered. The aim of the present study is to assess the current ecological status of the old oil boreholes in Central Northern Bulgaria. As a result of the field activities a catalogue with information...

The main waste dump "Vrtliste" (Kakanj Municipality, Bosnia and Herzegovina) is formed in the Ribnica river valley at the edge of the open pit. During its construction it was necessary to relocate the stream of Ribnica river, which included the construction of a hydrotechnical tunnel, river dam, spillway and other elements needed for introducing Ribnica into the Bosna River, as well as the overflow channel over the open pit. The area on which the hydrotechnical tunnel is located comprises of several lithological c...

In modern times, new methods of building foundations, laying pipelines for various purposes, and building roads require detailed study of engineering-geological processes and the material composition of geological complexes. Valid maps show a weak degree of knowledge of the territory of Karelia. At the same time, this region is characterized by the complex structure of the cover of Quaternary sediments, which cover the Archean and Proterozoic complexes. The influence of neotectonic post-glacial deformations and gr...

In order to substantiate the location of a production platform, engineering surveys on the shelf have to provide a complex investigation of the geotechnical conditions of the area. The licensed area (LA) is situated within borders of the Kara Sea shelf. There are a coastal gently sloping and sloping plain and a tectonic bench in the relief of the floor. Geological structure of the region include Mesozoic and Cainozoic slab complex rocks covered by the latest geological deposits. Down to the depth of 50 m they are ...

The Solovetsky archipelago in Russia is known for its history. Solovetsky monastery is located on the Bolshoy Solovetsky island. The monks built two monasteries and four monastic hermitages on the island long before the Soviet period. All of them are connected by a network of historical dirt roads. Around the monastery in the first half of the XV century there was a settlement. This article presents the results of engineering-geological surveys of the base of the road network of the "Solovetsky" Settlement located...

This article presents a case of reclamation of excavations after exploitation of gravel located in the Vistula River near Oswiecim. Gravel deposits are located there shallowly below the surface and they are associated with river accumulation. This area is characterized by a very high level of groundwater vulnerability. After depletion of the gravel field, the excavations are liquidated by backfilling with waste, usually mine waste. The material to be used underwent a formal assessment of its impact on the aquatic ...

The purpose of the investigation is to study environmental problems in the territory of South Kazakhstan and the state of drinking groundwater. In this paper, we consider environmental problems on the territory of 4 regions of Ka-zakhstan (South Kazakhstan, Zhambyl, Almaty, Kyzylorda), in particular, the city of Taraz, Shymkent and Almaty, through which the Great Silk Road passed. All these cit-ies belong to the most ecologically polluted cities of the Republic of Kazakhstan [1-8]. In the South Kazakhstan region (...

The paper presents the results of the field experiment conducted at the closed tailings facility ?Gilow?, which is located in Legnica-Glogow Copper District (SW Poland). The tailings pond had been operated between 1968 and 1980 as the primary place of waste disposal from copper processing plants of Polish copper mining industry. The dams of the pond had been built up with tailings which are impregnated with salt (NaCl) coming from underground brines. The aim of the study was to investigate the actual permeability ...

Statistics analyses confirm that the most common reason of dam failures and accidents is overflow and seepage. The issue of seepage is related to the reliability of the sealing elements in the body and the foundation of the dams. So far, 290 dams have been built in Slovakia, of which 50 are included in the ICOLD register. Most of them have a grout curtain in the foundation. Many of these dams were designed between 1950 and 1980. Lugeon or Jahde's water pressure test criterion was applied to optimize the parameters...

The paper deals with determination of shear strength properties on the interface between different types of gravels and a woven geogrid. The shear strength was measured using large scale direct shear test apparatus with dimensions of the box of 300 x 300 mm and a height of 200 mm. The tests were executed on the samples compacted to the dense state. The density index of the sample was measured and controlled for each test. Three samples of gravels were tested: fine gravel poor graded, medium gravel poor graded and ...

The authors of the article consider the features of the composition of surface and groundwater in the industrial zone named Nizhnekamskfaya and its surroundings in 1979?2018. Industrial zone Nizhnekamskaya is one of the largest in Europe. It is located within the Tatarstan Republic and includes many large petrochemical and oil refineries. According to the analysis of hydrochemical data, the authors can claim that the composition of natural waters in the vicinity of the industrial zone has not changed significantly...

This article deals with the fire safety test of polymer sleepers in the ballasted track. Although the occurrence of a fire in the track is unlikely, it may occur, for example as a consequence rolling stock fire or arson. In the past, old rolling stock assembly or track maintenance could lead to fire. For these reasons, products installed in track must be fire-safe. A new trend in the sleeper development is the utilization of polymer-based materials that suitably combine the beneficial properties of prestressed con...

The paper presents the solution of the actual problem - the geomechanical substantiation of rockburst hazardous deposits mining in the conditions of the mountainous topography at a depth of up to 1000 m from the surface. Four fundamentally possible variants of mining at level +10 m of the Kirovsky mine owned by the Apatit joint-stock company, which develops the Kukisvumchorr and Yukspor apatite-nepheline deposits, are considered. A three-dimensional geomechanical model which includes a long section of the Khibiny ...

The history of mining using open-pit mining method indicates a trend of increase in depths of mining. At the beginning of the 20th century mining operations were carried out within sedimentary rocks and the maximum depth of pits of that time didn't exceed 100 m from a surface. However, several decades later the maximum depths of open-cast mine developments reached 200-300 m. Further growing demand for mineral raw materials caused an improvement of technique and technologies, the maximum depth of conducting open-ca...

In the study we dealt with the design of family-type civil constructions on competent foundation ground from geotechnical point of view. The geotechnical characteristics of the rocks that are necessary for the design of a civil construction were made in the laboratory of the PROIECT GEO SRL Company in Oradea. We analyzed the placement general conditions, the geomorphology and geology of the foundation ground required for the construction. The necessary data for the design of family-type civil-engineering foundatio...

Accident prevention through risk analysis involves a specific activity from the design stage. In the analysis of the geotechnical risks from the site of the A1 highway, the Lugoj-Deva section, Lot 2 (km: 27 + 620m ? 47 + 090m) was achieved by applying qualitative and quantitative techniques and methods based on existing data and on systematic actions, to can fit the analyzed highway section into a geotechnical risk category and then offer solutions to reduce them. The qualitative methods applied were based on the ...

Our research has focused on ensuring the stability of the underground works with advanced techniques of non-invasive investigation and the development of an analysis of the underground infrastructure using the Finite Element Method FEM. The article is structured in three principal parts and a study to ensure the stability of the excavation was developed. The first part is about the determination of the optimal location for a possible underground laboratory based on the geological, the geotechnical and the geomecha...

Being the most important component of ecosystems, groundwater largely determines not only its properties and structure, but also its ecological qualities. Given the unity of natural waters - the Earth's hydrosphere, it is necessary to recognize that hydrogeoecological problems, as well as ecological in general, of which they are an integral and integral part, are also characterized by a certain hierarchical structure. Modern environmental problems, from global to regional and local, are associated with the growing...

Central Northern Bulgaria falls within the range of the North-Bulgarian artesian basin, characterized by a wide spread of storey aquifer system. The main aim of the present study is to characterize the features of the chemical composition of groundwater in the three most important pressure aquifers in the studied area (Senonian, Upper-Jurassic ? Lower-Cretaceous and Triassic), which are formed in carbonate rocks with Mesozoic age. In the background of the regional hydrogeological conditions, spatial change of the ...

Open pit reclamation is the final phase of mining activity to which every owner of the mining company is obliged. The selection of the target concept of the direction of decommissioning and reclamation of such excavation must be preceded by an analysis of the most optimal effects resulting from socio-economic and technical-environmental needs. The main research area on which research is being conducted is the sand open pit in the final phase of operation, whose excavations are simultaneously recultivated by their ...

To assess the hydrogeological conditions and indicate the major components of the water balance in the landfill area, located in the border of the city Tychy, southern Poland, a modeling investigation was applied. Groundwater flow model on the local scale for steady-state conditions for the year 2016 was created in FEFLOW environment, ver. 7.0. Modeled unconfined Quaternary aquifer was calibrated against hydraulic head measurements from 18 observation wells, 10 of them surrounded the old site of a municipal landfi...

Several tunnels are currently under construction in Slovakia and others are in process of preparation to be constructed. The most commonly used technology in Slovakia is NATM. One of them is the Milochov railway tunnel, which together with the bridge and another tunnel of works, will be located on the reconstructed part of the railway line between Puchov and Povazska Bystrica. The tunnel is designed for rail transport as a single-tube, double-track, with a track spacing of 4,200 m for a design speed of 160 km/h, w...

A change in the groundwater formation conditions occurs under the influence of human impact on the environment. Changes relate to both quantitative indicators of formation, such as natural reserves and natural resources, and qualitative, such as mineralization, temperature, chemical composition and gas composition. The impact of changes in natural conditions under the influence of economic activity on the conditions of groundwater formation in the territory of the Republic of Kazakhstan, as well as the impact of c...

The waters of the thermal spring Sveti Stjepan in Istarske Toplice spa in Croatia has been used for medical purposes since 1817. Given the physicochemical indicators, the water of the Sveti Stjepan spring is classified into a group of highly sulfuric-radioactive-mineralized Na-Ca-Cl hypo to isothermal waters. It should be noted that rich sulfuric content and at the same time radioactive water occur very rarely. The unique mineral composition significantly contributes to the high balneological quality of the spa. T...

Vibration driving of piles into a soil is a complex mechanical process, accompanied with such phenomena, as a changing of structure of soil surrounding the driving element, soil liquefaction, decreasing of friction forces between soil and surface of the driving element. During vibratory driving of sheetpiles and piles the vibrations arise in the surrounding soils. The effect of these vibrations on closely located buildings or structures may lead to damage or destruction due to additional uneven ground settlement, ...

The Lazy Bledowskie well field located in the area of the Upper Silesia (southern Poland) abstracts water from the Triassic carbonate aquifer. The aquifer is additionally heavily drained by the Zn-Pb ore mines. Due to a deterioration of groundwater quality, caused mainly by sulphate concentration reaching 317 mg/L, most of the wells have been closed and currently only 2 wells are exploited. Sulphates origin in water has been a concern issue of many researchers. However, there are difficulties in identification of ...

The paper presents a review of influence exerted by subsurface microbiota on hard rocks in the underground space of megalopolises. It describes main strategies used by microorganisms to attach to different mineral surfaces, considers natural and technogen-ic conditions, under which microbiota develops in the underground medium. Particular attention is given to the presence of aquifers with different chemical composition and contamination level, natural occurrence of organic layers in the rock section, urban source...

This work presents a mechanical and physical characterization of rock material from different slopes located in the town of Coimbra (Central Portugal) and its adjacent areas. The slopes are designated by numbers from 1 to 7. Slopes 1 and 2 are placed in Lower Jurassic Formations. Slope 1 is composed by marly limestones and marls. Slope 2 is constituted by dolomitic limestone. Lower Cretaceous Sandstones outcrop in Slope 3. Slope 4 is placed in the Finisterra Microplate and Slopes 5, 6 and 7 belong to the ?Schist-G...

The paper describes the use of methods of visualization and non-destructive investigation of spatial distribution of changes in the structure of the monitored material, which was a cement composite with admixture of blast furnace slag. The test specimens in the shape of the cylinders with a diameter of 24mm and a height of 25mm were placed in an aggressive sulfate environment represented by bacteria of the microorganism Acidithiobacillus thiooxidans for 6 months. To investigate the spatial distribution and the deg...

Stability analysis of underground excavations, such as tunnels, the most important parameters in the design of these structures. Because long-life underground structures should be according to their use. On the other hand, the amount and quality of tunnel excavation are depending on various parameters including geology risks and different type of rocks. So, for the optimal stability, mechanical behavior of the rock mass should be known. The current essay considers the showing stability and designed of Dezh-mandeh ...