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The engineering behavior of rock materials depends not only on stress state and stress history but also on the physical and chemical change of the rock materials due to weathering. Changes in index properties such as dry density void ratio, clay content and seismic velocity caused by weathering processes is representing strength and elastic properties of rock materials. The changes caused by weathering processes in rock material may be mainly considered under th e two topics; the mineralogical change and the physi...

Remote sensing is a useful tool for a ssessing, monitoring and conservation of groundwater with advantages of spatial and te mporal availability of data from the large and inaccessible areas. Hydroge ological characteristics of a region are derived by surface indicators-geological features, geomorphology, hydrology, vegetation, land use. The paper deals with geological element as a factor influencing the hydrological and hydrogeological processes in the basin and adjacent areas Dambovicioara. Complexity of data pr...

Increasing population, urban development, i ndustrial and agricultural needs, gradually warming the Earth and increasing droughts have been caused of reduction of consumable water and the need for rich resources of underground water has been more than before. Arak as a fourth pole of the industry in the Iran country has especial dependence on Aman Abad region underground water resources, so the study in this area for underground water exploitation and control of resources have great importance , that most of these...

In Poland the closed shafts were filled up in the past years with th e rock material with very different backgrounds and properties. The effect of flooding the shallow, old mining areas, as well as the impact of water infiltrating from the surface, are observed on the surface as subsidence funnel and discontinuous crack. Using the geophysical surveys, numerical modeling, geologic al and hydrogeologi cal studied, some possibilities for diagnosis of hazards in abandoned coal mines areas are shown. In the context of ...

Rock mass deformation modulus is an im portant input parameter in any stability analysis in the surface and underground structures. This parameter can be obtained through in-situ tests, empirical relations be tween deformation modulus and rock mass classification, and estimating from back analysis method. Field tests are developed to determine this parameter directly, but these methods are time consuming and expensive. Therefore, some researchers have proposed empirical formula for estimation of rock mass modulus ...

Hygienic problems and the protection of property against floods have been successfully solved by existing concepts of drainage. However, the way of urban drainage has led to intensification of urbanization impact on hydrological regime of the country. Technologically, environmentally and economically purposeful urban drainage prevents rapid runoff of waste water. New concept s upports such way which resembles natural way of drainage in unstopped floods and which reduces negative consequences of country urbanizatio...

Region of West Carpathians Mountains is the territory, where app. 5.25% of total area of coverage are landslides. Therefore our re search team has started implementation of TDR technology (Time Domain Reflectometry) for measurement of slope underground movements. However this technology offers implementation for a variety of uses. Continuing development of monitoring usin g this method of measurement has been implemented in one selected locality where new national road was built across the existing landslide. In t...

Municipality of Kikinda spatially belongs to the northern part of Banat, Autonomous Province of Vojvodina and covers an area of 782 km 2. The water supply system uses groundwater wells which capture water from deep aquifer at a depth of about 200 meters and consists of central city water source and water sources from surrounding local communities. City’s central water supply system contains 14 wells, divided in several water sources which are: "Šumice", "Toza Marković", “Jezero” and “Masarikova”. The t...

The presented paper brings results of a case study implementing the geofactors of flood land and radon hazard into land use plans in the cadastral district of Doubrava and Karvina. The studied area is located in the Ostrava-Karvina Coal District in the north- east of the Czech Republic close to the Polish border. It is defined by the map sheet 15- 44-03 in 1:10 000 scale. The area was studied for the fact how land use planners catered for the distribution of flood land characte rised by the hundred-year flood and ...

Determining the stress around a mining excavation is a complex issue of Geomechanics and implicitly of the mining area. The evaluati on of stress state is essential, but very difficult to obtain, due to the interaction of the instrument ation with the rock massif. The measurement methods, together with the devices and the methods of processing and interpretation of data, ensure and create the possibility of knowing the degree of dependence between the measured effects in terms of time, and the factors causing them...

The crack propagation mechanism of rocks under tensile and compressive loading conditions has been investigated. A higher order indirect boundary element method using special crack tip elements has been used to solve the various example problems in rock fracture mechanics. It is concluded that the brittle rocks fail due to the mixed mode fracture propagation under both tensile and compressive loading conditions. The micro- cracks are initiated due to tens ile or tensile and shear under tensile loadings and due to ...

Analysis of the horizontal strains of the ground subsidence due to underground excavation in rock can be accomplished by a hybridized higher order indirect boundary element/ finite difference (BE/FD) formulation. The higher order displacement discontinuity field is obtai ned by using the quadratic displacement discontinuity elements (i.e each higher order element is divided into three sub-elements bearing a quadratic variation of displ acement discontinuities). Then th e classic finite difference formulation (i.e....

The aim of this paper consists in highlighting the feasible technical solution in a real situation, namely to achieve the consolid ation of the road accessing the monitoring block from Obrejii-of-CДѓpГўlna dam. As a consequence of the landslides occurred on the left flank, between the intersection with national road DN 67C and Podu Vacii point, at about 50 - 60 m downstream the dam, it was proposed the narrowing of the access road platform, to the surveillan ce and control block of the dam, on 20 - 30 m length. Ac...

The aim of the paper is to in form on the need to apply geological information in land use planning and other state administration spheres, such as building office services. The study was carried out with in the locality specified by a map sheet 15 44 07 in 1:10 000 scale, in the cadastral district of Petr vald, Orlova, Horni Such a in the north-east of the Czech Republic close to the Polish border. The subject of the study is an evaluation of geobarriers of rock workability, inundatio n area and radon index. A si...

The existing groundwater source for the public water supply of Be čej city in Serbia tapping groundwater from three water-bearing horizons over 15 wells with summary capacity of 100 l/s. Near the public water source of Bečej exists groundwater source for industry with capacity of 12 l/s which tapped same horizons. In the coming period is planned to increase summary capacity of this groundwater source up to 57 l/s. Also, the increase of summary city’s s ource capacity is planned for 50 % in the next few years, ...

The paper deals with some factors influencin g the values of sandy soils shear strength parameters, obtained by direct shear test (DST). Influences of density, shear area changing and number of specimens on the test result of clayey sand (SC) and sand with some fines (S-F) are examined. Influences of the density on the values of sandy soils shear strength parameters will be introduced in the paper by the tests with density index 6 . 0 ; 3 . 0=DI and 0.9. Influences of the shear area changing on the values of sandy...

This publication presents th e assessment studies of two important characteristics, limiting the utilization of the geological envi ronment for various pu rposes, especially construction. The first is the character of the pre-quaternary bedrock, other is the rock workability. Character of the pre-quaternar y bedrock and its depth is important primarily for the complex foundation engineering. They carry the greater load caused by the weight of the structure itself. Therefore, it is often necessary to carry the weig...

The purpose of this publication is to evaluate the geological environment for its suitability, respective unsuitability for foundation engineering. The means to realisation this objective was the study about extension of the engineering-geological zones on a map sheet 15-44-08 in studied area. This is an area municipalities in the Doly, Spa Darkov, Stonava and Horni Sucha. It is a mining area in the northeastern part of the Czech Republic. There were detected the speci es of the engineering-geological zones, the l...

The object of this study is to locate the zones of groundwater discharge into the eastern shores of the Dead Sea. To achieve this object the electrical conductivity-temperature with a depth method was used. This study show ed that the Dead Sea divides into two layers relating to the electrical conductivity and temperature with depth. The upper layer subdivided into two members. The upper member extends from the sea surface down to a depth of 15-25 m. The lower member extends from a depth of 15-25 m to 40 m and it ...