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The Dalmatian region is a karst region built of Mesozoic limestone and dolomites. In the four Dalmatian counties aggregates and natural stone is quarried at 155 sites and there are 73 abandoned sites. A GIS based model on map-correlation and map-integration processes was used in order to define relationships between spatial layers and combine predictor factors in supporting a hypothesis. The response variable is the set of point locations of current aggregate and natural stone quarries (termed training sites), and...

The stability problems in 73 meters height of dolomite wall cause to starting an empirical estimation for early step of slope optimization. In this paper, three rock classification systems (RQD, RMR and SMR) are utilized for assessment of dolomite wall failures in the 6th Golbini Jajarm bauxite mine. The SMR (slope mass rating) geo-mechanics classification system, is adaptation of RMR (rock mass rating) for slopes. In first step, joint study and site investigation carried out for RQD (rock quality designation) and...

Alkaline basaltic tuffs, BT, from southern Turkey were characterized and used to obtain cheap sintered glass-ceramic and ceramic materials. The chemical and mineralogical compositions were analyzed by fluourescene spectrometry and X-ray diffraction analyses, respectively. The phase formations were studied by DTA, while the sintering behavior – by differentional dilatometer. The structure of the sintered samples was evaluated by pycnometric techniques and observed by SEM. Due to its high porosity and low crystall...

The leaching conditions of galena (PbS) concentrate in nitric acid (HNO3) medium containing hydrogen peroxide (H2O2) were investigated in this study. Effects of stirring speed in the range of 0 to 600 rpm, nitric acid concentration in the range of 0.1 to 2.0 M, hydrogen peroxide concentration in the range of 0.25 to 2.0 M, leaching temperature in the range of 23 to 60В°C, particle size range of -212 +106, -106 +75, -75 +45 $\mu$m on lead dissolution were investigated. According to obtained results, it was determin...

In the course of years in the engineering practice are formed mathematical procedures which are marked as “engineering calculations”. We will characterize the engineering calculations with the following specific features: • the engineering calculations are pointedly pragmatic; • the engineering calculations are based on working formulas; • the results are approximate; • the engineering calculations are developed by experts and should be applied by experts.

The long-going petroleum exploitation in the Section Cocu determined the increase of chloride concentrations in groundwater. The aquifer system in this area comprises four aquifers, with different extensions, separated by semipervious units. The third and the fourth aquifer are more extended. The third aquifer is in direct relationship with potential pollution sources, such as oil wells and oil pipelines and it is drained by the River Cotmeana. Several monitoring wells were drilled for the purpose of this study, p...

The Chahargonbad area is located in southern part of the central Iranian volcano–sedimentary belt, in Kerman province. The intrusion of several intrusives bodies such as granodiorite, monzonite, diorite, granite and quartz diorite in the volcanic sedimentary sequence have given rise to an intense and vast alteration and copper mineralization in the southern part of this belt different image processing techniques such as color composites, image filtering, band ratioing and principal component analysis have been a...

Rocks are complex and heterogeneous materials. Their complexity is described depends on their mineralogical constitutions which is characterized based on the features of the rocks such as their fabric and texture. It is considered that the texture is an important parameter to evaluation of the mechanical properties of the rocks. In this study, physical and mechanical properties of 9 different rocks were tested according to standards of International Society of Rock Mechanics (ISRM, 1981). In order to analyze the t...

In this paper, we investigate the the lateral displacement of a Gaussian beam by a conductive thin slab is investigated. A description of the Gaussian beam and a lateral displacement of Gaussian beam at a conductive thin slab is given. We construct a plane wave representation of a Gaussian beam incident upon a homogeneous, lossless, isotropic conductive slab. The waves inside and outside the slab are solved analitically by matching the conductive boundary conditions at the interface. Numerical results including th...

The crack propagation researches carried out on rock and rock mass are important in mining, petroleum and natural gas engineering studies. It is assumed that crack propagation is an important design parameter in underground and open-pit mining applications. It has positive effects in some mining activities such as drilling, blasting, excavating, block caving but also negative effects due to cracks formed around mine roadways, tunnels and in landslides. In this research, the marble and travertine were selected as n...

An exploratory data analysis (EDA) technique is based on the box plot and robust-class selection. Calculation of the threshold of anomalous data is based on the determined classes. In contrast to classic statistical processing ( ), in these methods, normalization isn’t needed. This paper is devoted to presentation of EDA application on stream sediment survey data of 1:50000 Shirinkand sheet. 180 Samples were analyzed for 23 elements and because of high censored values of Cd and P, they are omitted from data proc...

The uniaxial compressive strength (UCS) of rocks is an important parameter used in rock mechanics studies. The standard test procedures in order to determine UCS value has been developed by ISRM and ASTM. According to these standards, the tests should be carried out on core samples but they say that the tests should be also being carried out on cube samples. There are a lot of papers published about the size effect of intact core samples. According to the articles and standards, the length (l) - diameter (d) ratio...

Variability of stream sediment survey data have two principal component including syngenetic component relates to lithogenesis and lithogeochemical variation, and epigenetic component relates to mineralization which its determination is the target in geochemical exploration. In regional stream sediment surveys, effective lithologic units in syngenetic component are located in the upstream of related sample. Various methods are used for neutralization of syngenetic component in stream sediment geochemical surveys s...