Browse

The principal disturbances created by blasting in open pit mines can be listed as ground vibrations, air blast and fly rock. All of them can, under some circumstances, cause damage to structures nearby, and can become the source of permanent conflict with the inhabitants living close to the operation site. Therefore, the prediction of ground vibration components is of great importance for the minimization of the environmental complaints. This paper presents the result of ground vibration measurements induced by be...

Instrument Optic Electron Service Co. (IOES Co.) is a company which distributes and supports bulgarian surveying and mine surveying market with motorized optical total stations based on laser direct reflex measurement, 3D full-panoramic long range laser scanning systems and at last but not least with effective GPS and GIS solutions. All these three separate bundles of instruments, which are also interdependent and are used for remote rapid creation of precise 3D digital models of large, hard to approach and danger...

The Varna lake is connected with Varna bay (situated in the north – west part of the Black Sea with two channels).The lake has a strategic role in the economy of Varna city. This determine the interest and necessity from investigation of changes in it hydrological and hydrobiological conditions. The variations of this parameters in the lake ecosystems is provoke from antropogenical influence ( particulary the effect of heat pollution from coastal electric power stations). During the last 10 years, thermo-electric ...

The environmental problem of natural occurring radioactive materials (NORM) is omnipresent on Earth, and their radioactivity may become concentrated as a result of human activities. Various industries produce concentrated radioactivity in their by-products: Mining originating industries such as the coal industries, petroleum extraction and processing and natural gas, mining enrichment waste, phosphate, etc. They have been well known and widely investigated. The EPA describes NORM wastes from the mining and process...

In this article, pollution of ecological systems with heavy metals and their hazardous effects were investigated as a view of waste management. Several industries from mining to electroplating produce large volumes of wastewater containing heavy metals. These wastewater cause accumulation of heavy metals through ecological circle in soil, plants and animals which directly enter human food chains presenting a high hazardous effect on consumers. They may cause severe damage of the kidney, reproductive system, liver,...

Excess amount of coals produced more than demand has to be deposited in stockyards. During this period, coals lose both their economical values and cause environmental problems. It is often that spontaneous combustion event of coals can take place in the cases of convenient conditions are available. In this work, two industrial sized stockpiles were constituted at coal stockyard of Western Lignite Corporation (WLC) in Tuncbilek, Turkey. The size of the stockpiles formed as triangle prism was about 10 m by 5 m widt...

Global mapping is a international collaborative initiative through voluntary participation of national mapping organizations of the world, aiming to develop globally homogeneous geographic data set at the ground resolution of 1km, and to establish concrete partnership among governments, NGOs, private sectors, data providers and users to share information and knowledge for sound decision-making. The primary objective of Global Map project is to contribute to the sustainable development through the provision of base...

Due to limitations in the spatial and temporal coverage of air quality measurements, monitoring data normally are not sufficient as the sole basis for demonstrating the adequacy of emission limits for existing sources. Also, the impacts of new sources that do not yet exist can only be determined through modeling. Dispersion models are used in all the basic applications such as the determination of the effect of a pollutant source on environment, calculation of ground level concentrations and regulatory control of ...

The elimination of finely emulsified oil from waste waters is an important problem, and so far, no satisfactory solution thereto is available worldwide. Here we report some of the results from our studies on the purification of water from different types of oil, to allow waste water re-use in the technological cycle, or use for agricultural irrigation. The isolation of oil is performed by treatment of waste water with polymers of specific adsorption behaviour and solubilizing properties in aqueous medium. Multiblo...

This paper is devoted to geological and geophysical exploration of Sarband graphite deposits in Markazi province of Iran includes Khanadarreh Bala and Vesmestan deposits. Geological methods include trenching and drilling test pits and exploratory holes, sampling and analyzing with XRD and chemical analysis. This method show that Khanadarreh Bala deposits has purer graphite than Vesmestan and hosted in schistisited rocks and has higher continuity than Vesmestan deposit. Geophysical methods include SP ,mise-a-la-mas...

Due to Internet development and the expansion of the communication network, the services lately delivered by administration and municipalities have improved by granting customers e- access to administrative databases. Several servers for geographical information are already available in the Internet. However, they encompass primarily geographical objects, roads, and the maximum level they reach is address. There is no data about estates, their owners, coordinates of the boundaries’ points, public areas, functional...

In this study, the amenability of Akoluk (Ordu -Turkey) ore to the extraction of gold and silver by cyanide leaching was investigated. Mineralogical analysis of the ore has revealed the presence of native gold and a variety of minerals including barite, zinkenite, stibnite, orpiment, realgar, cinnober, pyrite and sphalerite. No silver was detectable under microscope suggesting that it could be present as occluded in minerals such as fahlerz, antimonite and zinkenite. Gold particles as 1-88 $\mu$m in size were obse...

Multivariate analysis is one of the base stage in heavy geochemical prospecting (heavy mineral study). Factor and clustering analysis identify different type of mineralization and the relation between minerals in studied area. But in these methods for each mineral it is necessary to be at least 10 valid samples. Therefore some minerals can’t be analyzed by such methods and we miss some minerals in multivariate analysis and can’t identify the relation between these minerals and others. Jaccard coefficient can be us...

Noise is defined as unwanted sound and one of the threatening factors for human health. Noise effects on human health psychological, physiological and mentally such as interference with communication, hearing loss, sleep disturbance, stress, annoyance, effects on performance. Road traffic is one of the most important noise sources in residental areas. Subsource of the road noise are engine noise, tyre/road noise and aerodynamic noise. The level of noise from traffic is correlated with the traffic flow rate, the sp...

We took into consideration aspects regarding the physiology at two species of wooden angiosperms cultivated in sites from industrial area of Borzesti, Bacau District: Populus tremula L. and Tilia tomentosa Moench., during their ontogenetic cycle. We also talked about aspects related to some special biochemical and physiological parameters (dry matter content and assimilating pigments content). The researches of vegetal physiology have used classical methods of investigation. The negative influence of air pollutant...

In this paper a total of seven samples (a river sediment, two surface soil samples, and four surrounding rocks) from the Pangaion area, Northern Greece, were collected and analyzed for their content in 10 major (Al, Ca, Cl, Fe, K, Mg, Na, P, S, and Si) and 32 trace elements (Ag, As, B, Ba, Cd, Ce, Co, Cr, Cs, Cu, Ga, Ge, Hg, La, Li, Mn, Mo, Ni, Pb, Rb, Sb, Se, Sn, Sr, Th, Ti, U, V, W, Y, Zn, and Zr). The sampling was based on the major geomorphological processes of the area. The two soil samples are typical of the...

Many industrial processes and sewage treatment facilities produce odours, most of which are of decomposed sulphur compounds. Hydrogen sulphide (H2S), which is a very toxic and corrosive gas, may be the standard indicator among the obnoxious odours and therefore the amount released into the air is required to be regulated strictly. Hydrogen sulphide was efficiently removed from contaminated air by a pilot-scale bio-filter; a column prepared with soil, sawdust and activated sludge materials from the leather industry...

The paperedeals with the results of an analysis of landscape element changes, such as forests, water areas, agricultural areas, built-up areas, anthropogenic shapes in the selected area. The applied method makes use of the possibilities of Geographical Information Systems, terrain observation, documentation and study of archives. The starting time period for which the landscape character analysis was carried out is the year of 1946 (military aerial photos) and the present time (maps). The research is localized in ...

Geochemical prospecting is one of the most useful methods in mining deposits exploration. For most of minerals and elements, geochemical data are reliable and helpful. As these methods are not expensive we can use theme in large scale. But non of these methods ( based on sampling from rocks, stream sedimentary, soil, water etc.) are complete and need complementary methods such as heavy mineral study, geophysics, remote sensing etc. Heavy mineral study is one of the best complementary methods. Based on this method ...

Plant growth-promoting rhizobacteria (PGPR) can effect plant growth and development in two different ways: indirectly or directly. Indirect promotion of plant growth occurs when these bacteria decrease or prevent some of the deleterious effects of phytopathogenic microorganism. The most important way is the direct way, when bacteria promote plant growth by providing the plant with a compound that is synthesized by the bacteria from plant rhizosphere. From this point of view there are many studies that show the imp...

ccording to Environment Report 2004, eight main areas with most violated environment can be identified in Slovak republic. Among those areas are also regions with mining and raw mineral processing, e.g . Jel\vsavsko -luben\'\icka, Rudniansko-gelnick\'a, Ko\vsicko-pre\vsovsk\'a a Zempl\'\inska regions. Affected regions can be defined by individual environment component grade, risk evaluation and regulations focused on environment protection. The presented paper deals about environmental impact of business activitie...

The Correspondence Analysis Method (CAM) is actually a Non-structural method that could be used to define the anomaly from the background. To apply this method, representative samples of a large area are necessary but knowing the exact location of each sample is not necessary. Base on this method, the litho-geochemical data would be mathematically process to extract the valuable factors needed to plot a two by two diagram. This method has been applied on available data in Enjerd skarn deposit. Five factors have be...

The climate system of the earth, globally and locally, obviously has been changed from pre-industrial period to present. Some of the changes are due to natural phenomena and some due to human activities, where the crucial role has been played by the emission of so-called “green house gasses” (GHG). By 1990 the measured concentrations of GHG had reached their highest level. From the enlarged volume of observations we have come to the picture of world that is getting warmer. The observed climate changes and their im...

The system is intended for operatively planning and management of the quality of extracted ore in real time. The system includes following features: Creating and maintenance of data base which contains the numeral samplers of the detonated fields, the needed technical and technological indicators etc. Planning of the extracted activities for period, day, shift and part of a shift by different optimization measures. Distribution of the extraction between the coal-faces. Reverse connection with GPS information relat...

Problem about the directions for improving the healthy and safe work conditions during the execution of explosion duties is put into attention in this article. It is about the assessment for the enabled risks during operation with the explosion duties and the necessity of using some precautions and actions for averting, decreasing, and limiting their existence or inventing a protection towards them.

The present work aims at presenting the main research topics of GPhI in the field of numerical air pollution modeling. The basic dynamic and pollution transport models, applied for the purpose are briefly described. Some study results are demonstrated, concerning air pollution modeling in local and regional scales.

Collection and analysis of well data is important process, allowing a reconstruction of the penetrated rocks. Numerous charts and diagrams illustrate all sorts of geological information. Some of them are demonstrated and generalized by well sections from south-western part of the Central North Bulgaria. Logs together with well core and cuttings are the bases for construction of a general Mesozoic lithostratigraphy column. Besides the major lithotypes the source rocks, reservoirs and seals are also outlined. Select...

This paper present a geophysical investigation performed for the Bakhtiary dam site in Iran. As it has been designed with 330 meter high, this dam would be the highest dam in the world. In the context of engineering seismology, seismic tomography may be relevant in problems where seismic refraction is currently used. Both of these techniques aim to detect subsurface velocity. In Bakhtiary dam site we used seismic refraction, tomography and borehole seismic tomography methods. For refraction seismic method Geotomo ...

The North-Western Bohemia region takes a unique position in the history of mining in the Czech Republic. Several ore districts are situated here, the welfare of which influenced the development of the Czech state in some periods. Some precious stones mining was also significant. Today the North-Bohemian Basin area is known for its largest Czech brown coal deposit. Whereas ore mining in the region extinguished and the other raw materials mining has relatively small significance, coal mining and the restoration of d...

Low concentration of chlorinated aliphatic compounds may be found in wastewater and contaminated soils from different industrial sources and in the air arisen from these type sources. Low levels of Volatile Organic Compounds (VOC)’s could be removed by adsorption, incineration or biofiltration methods. These methods have some disadvantages with low removal efficiency or high operation cost. Chlorine has been removed from the chlorinated aliphatic compounds by biological methods at anaerobic conditions. The aim of ...

A comparative study of the content of five macro- and about fifty micro- and trace elements in fly ashes from six coal-burning power plants in Bulgaria is carried out by means of a combination of Chemical Analysis, AAS, X-Ray Luminescence and X-Ray Fluorescence EDA. The elements’ distribution among and within single particles is investigated on the base of the comparison of data from bulk analysis, micro-analysis, and the results from acid leaching tests using 0.1M HNO3. It is established that many heavy metals an...

The problem is described with the concepts of the mathematical programming. The system UE can be valued with the execution of the participant’s goals – students, lecturers, state, contractors, parents and the rest of society. The optimization has to be done with the following limitations: • Capacity (the opportunity of the students to assistance) • Capacity (the opportunity of the lecturers to teach) • Financial means • Normative (rightful and administrative) boundaries The result – oriented functions are consider...

Salt weathering is a process of rock disintegration that takes place in a variety of environments and affects many kinds of rocks. Salt crystallization is one of the most important degradation mechanisms on the effect of rock weathering. Salt weathering is especially effect on the pores rock and affects the rocks, which contains cracks and micro cracks. In this study, the resistance of stones against salt weathering was estimated by ultrasonic measurements and weight loss approximation. Experiments were carried ac...

It is well known that, many kinds of industrial organic waste can be used for biogas production, but the biogas and methane yields depend on the biodegrability of the compounds in raw material. Recent studies are aimed to increase the biodegradability of organic matter by many pretreatment processes. In this study, belt-filter press sludge which has been taken from the waste water treatment plant of ETAP, has been used in experiments, basic and/or microwave radiation (MW) pretreatments have been carried out in ord...

The paper presents principles and conditions of leakproof yards construction located on the inside dumps of open pits. The dump soils used as the facility foundation were described. The requirements concerning the mineral soil used for sealing beds according to the EU regulations, were presented. Based on the case study, the method of forming the sealing bed and all necessary methods of its maintenance are showed. The results of filtration coefficient measurements on the laboratory and field scale as well as reaso...

The world’s 65\% or 70\% oil reserves are concentrated sedimentary basins in the Gulf States (Saudi Arabia, Iran, Iraq, Kuwait, UAE and Qatar) of the Middle East. Gulf States producers accounted for 24.7 \% of the world oil supply in 2005 and this share of supply will grow to 51,8 \% in 2030. However, the Middle East has a multitude of oil exploration and production problems closely interlinked to each other and originating from regimes problems, market problems, technology and know-how transfer obstacles. Oil sup...

Sungun Porphyry Copper deposit is located 75 kilometers northwest of Ahar and 130 kilometres northwest of Tabriz. In order to model the deposit and estimate its reserve, 31068 input data gained from 152 boreholes were used. Cu grade was selected as the major regional variable on which the present research has focused. All of the available data were changed to 12.5-meter composites so that statistical equalization could be reached. Studies indicated that Cu input data had single - population characteristics. To car...

The changes of hydro-climatic characteristics have effect on surrounding. The problems in the river Bregalnica basin (Eastern part of the Republic of Macedonia) are the result of abundant rainfalls and long drought periods. Observing and understanding the hydro-climatic effects may provide good estimate in several fields (agriculture, management of water resources and civil engineering). Visualization of data on the hydro-climatic changes in the river basin provides a good forecast. Time Series of rainfalls and te...

We have studied 15 species of ligneous plants angyosperms, spontaneous and cultivated ones – in areas adjacent to industrial platforms: Borzeşti (Bacău county), Bicaz and Taşca (Neamţ county) - Romania; in the first case, the noxious substances are mainly gaseous (sulphur dioxide, chlorine, ammoniac), but also solid (carbon black, soot); in the other two cases, the noxious substances are mainly solid ones (lime or cement powders prone to sedimentation). Our investigations have focused on observations concerning sp...

National Hard Coal Company SA Petrosani performs its activity in the field of coal industry, and is interested in a total computerization of own activities. In the period 2003 – 2004, the National Hard Coal Company SA Petrosani has had as major aims the design, installation and development of an integrated informatic/ computer system by using a high quality informatic solution. The integrated informatic/ computer system represents a complex project used for management of economic activities and industrial processe...

Mechanical size reduction by using crusher and grinding mill is widely used in the aggregate producing industry and the mineral industry. In this study, physical, mechanical crushing and grinding properties of the rock specimens obtained from different bedrock were determined by using 8 different tests, to characterize the relationships between physico-mechanical properties of rocks and mechanical size reduction efficiency. The rock specimens were tested according to the procedures recommended by the ISRM (1981). ...

Ore dressing leads to producing of great quantities of waste which are stored in special waste depositories (tailing ponds). They occupy large areas and their exploitation provokes air, water and soil contamination of the surrounding territories. Reclamation is one of the most radical methods for recovery of the environmental components, creation of conditions for grass and forest growth and formation of appropriate landscape. The current study aims to determine the anthropogenic impacts on the soils in the region...

Modelling of air pollution parameters, according to the meteorological data is a necessary for preventing the repetition of same problems. During recent years, neural network-based models have been shown to be powerful tools in the simulation of variations in air quality and provide better alternative to statistical models because of their computational efficiency and generalization ability. In this study, prediction of future daily SO2 concentrations in Konya (Turkey) using MLP (Multilayer Perceptron) artificial ...

The paper presents definitions of nature risks and disasters. The mapping of the risk processes is discussed in the direction of educational purposes. International organizations publish information brochures about how to teach children correct behavior and preparation for natural disasters. Questions as “What do you do in case of an emergency” are discussed. Standards and technologies related to emergency management are considered. Some examples of maps and methods of mapping for young and older students are pres...

This study was aimed to determine the levels of blast-induced vibrations at Bayırk\"oy town situated in the boundary of Beşikd\"uz\"u and being said to be affected by the blasting generated at Korkuthan Quarry being located at the edge of Akhisar Brook in Beşikd\"uz\"u in Trabzon. Korkuthan Quarry has assured riprap materials for filling the sea and sea fortification for the construction of Espiye-\cCarşıbaşı coastal highway (including Giresun coastal highway) at the scope of The Black Sea Coastal Way Rehabilitati...

Laboratory investigations on zinc ions removal from model solution in a column with fixed bed zeolite clinoptilolite were conducted. Experimental dynamic curves for sorption depending on the bed height of zeolite and velocity of treated solution were received. The main constant parameters characterizing the process at breakthrough were defined. It was established that the bed column volumes of solution and the capacity at breakthrough increase with increasing of contact time, whereas sorbent usage rate decreases. ...

Question about identification of the dangerous situations during industrial explosive works’ execution is treated in the report. A test is made for systematization of the aspects that cause some damages and problems when work with explosive materials.

Chadormalu Mining and Industrial Company (CMMIC) is mining Chadormalu Iron Ore deposit in Yazd province, central Iran by using conventional open pit mining method. The final pit will be excavated to a depth of approximately 225m with a bottom elevation of 1300m above mean sea level. According to the initial design, the inter-ramp slope angle of 55° with a 30m bench height, a catch bench width of 10m and 70° slope angle of individual benches were proposed. Mining to date has intersected complex geology and areas of...

A possibility for fixing of the location and approximate sizes of the terrestrial surface regions which are situated above solids with anomalous mass is considered .The precise gravimetric measurеments are combined with observations by navigation GPS receivers for marking of the preliminary designed gravimetric stations. The interpretation of received anomalous field is preceded by an analytical removal of a regional background. The expedience of the chosen method is well founded and supported by an example of a c...

ATLAS DMT software contains a set of suitable application tools. One of them is the EROZE tool (Erosion), which allows the calculation of the long-term loss of soil from the area i.e. soil lost. The EROZE tool uses for the calculation a quantity effect of water erosion caused lost soil, so called universal equation (Wischmeier - Smith). It is possible to combine the EROZE tool with the other application modules of the ATLAS DMT software, therefore it offers a lot of the possibilities for the practical utilization....